HomeMy WebLinkAboutCT 83-19; CALAVERA HILLS VILLAGE T; SEWAGE SPECIFICATIONS; 1986-12-31• SPECIFICATIONS
for
CALAVERA HILLS SEWAGE
PUMP STATION NO. 2
(Serviflg Villages
U, W, X, Y, T & R)
for 11
City of Carlsbad
December 31, 1986
by:
NBS/Lowry
P.O. Box 28100
San Diego, CA 92128
CALAVERA HILLS SEWAGE PUMP STATION NO. 2
SPECIFICATION INDEX
SECTION
NO. TITLE
I General Requirements
II Package Pump System
III Standby Electric, Power System
IV Surge Control Equipment
V Ultrasonic Flowmeter
VI Hazardous Gas Detection System
VII Valves and Miscellaneous Equipment
VIII ' Architectural Items
IX Protective Coatings
X Reinforced, Cast-in-Place Concrete
XI Structural Steel and Miscellaneous
Metal Work '
XII Masonry Construction
SECTION I. GENERAL REQUIREMENTS
I A. STANDARD SPECIFICATIONS AND DRAWINGS
I i. Specifications - The performance of the contract,
all materials supplied and all work performed shall
be in accordance with:
I a. The Standard Specifications for Public Works
Construction, 1985 Edition, including
Supplements, except as otherwise noted in the
I . Contract Documents, or on the Project Plans,
or except as modified by • the City of
Carlsbad's• "Standard Special Provisions For
I
Use In Conjunction With The AGC/APWA Standard
Specifications For Public Works Construction."
Said specifications shall be referred to as
I
.the Standard Specifications.
b. The Standard Specifications, July 1984
Edition, or latest supplement, of the State of
I California, Business and Transportation Agency
Department of Transportation (Caltrans) insofar
as the same may apply (said specifications are
hereinafter referred to as the "California
I Standard Specifications").
2. Drawings - All work shall be done in accordance
I .. with the design drawings and the City of San Diego
Standard Drawings, Document No. 769374 filed with
the City Clerk on June 3, 1986, and including all
I
Regional Standard Drawings, except as otherwise
modified by the City of Carlsbad's Supplemental
Standard Drawings (latest edition) consisting of:
I a. Drainage Improvements: Drawings DS-1 through'
DS-9
I b. General Surface Improvements: Drawings GS-1
through GS-16
C. Sewer Improvements: Drawings SS-1 through
I '
SS-2
d. Water Improvements: Drawing WS-1
I ' B. DRAWINGS AND DATA
At least 30 calendar days before proceeding with procurement
of equipment,' the Contractor shall submit to the Owner, for
approval, eight complete sets of checked and coordinated data
on equipment which he proposes to furnish for all equipment
.fied in this section. The data shall include
acturer's name, equipment model number, catalogs,
I .fications, descriptions, dimensions, drawings,
graphs, wiring diagrams, installation and maintenance
uctions, and specific data as itemized below for the
I . .cular types of equipment. Where the data are in catalog
or several items are listed on the same sheet, the
ment to be furnished shall be marked clearly and
I
nently. All drawings shall be made with the aid of
.ing equipment, to scale, and with neat lettering
hand sketches will not be acceptable). Drawings or data
duced by the "Thermofax" method of duplicating will not
I ceptable. The data shall be furnished in binders.
submitted separately will not be reviewed for approval
I
. receipt by .the Owner of complete sets of checked and -
.inated data. Unchecked and uncoordinated drawings and
will not be acceptable.
I .esubmittal data shall also be submitted at one time in
rs.
1
I procurement or fabrication of materials which is
rmed prior to approval of data will be at the
actor's risk. .The Owner shall have the right to require
I ontractor to make such changes in equipment which he
s es to furnish as the Owner determines necessary to
rm to the requirements and intent of these
fications.
val by the Owner of the Contractor's data shall not be
to relieve the Contractor of any part of the Contractors
ations to meetS all the requirements of . these
fications.
ldition to the approval data referred to above, the
fic data required for the particular types of equipment
Control Equipment - Electrical ratings, construc-
tion, and operation.
Air-handling Equipment - Construction, motor horse-
power, electrical rating, and manufacturer's
standard rating tables or curves indicating cubic
feet per minute, static pressure, brake horsepower,
and revolutions per minute.
Pumps - Performance data curves showing head,
capacity, horsepower demand, and pump efficiency
over the entire operating range of the pump from
shutoff to maximum capacity. The equipment
manufacturer shall indicate separately the head,
capacity, horsepower demand, overall efficiency,
1-2
and minimum submergence required at the guarantee
point. Performance requirements shall be as
I defined in the Hydraulic Institute Standards.
ELECTRICAL DESIGN FOR PUMP ROOM INSTALLATION
I All electrical components installed within the pump room
shall be suitable for a Class I, Division I, Group D
location. All motors installed within the pump room shall be
explosion proof design.
SAFETY GUARDS
I All exposed moving parts shall be provided with proper guards
in accordance with the requirements of the State Industrial
Safety Code and the Federal Occupational Safety and Health -
I Act. All such guards shall be galvanized after fabrication
and shall be easily removed to permit inspection, removal and
repair of the moving parts.
I E. SEISMIC DESIGN OF EQUIPMENT
All prefabricated equipment furnished and installed under I • this section shall be designed and constructed in such a
manner that all portions, elements, sub-assemblies and/or
I including
parts of said equipment and the equipment as a whole,
their attachments, shall satisfy the seismic Zone 4
I design criteria per the Uniform Building Code (current edition). The minimum seismic design for the following
I :. listed equipment shall be the capability to resist a
horizontal load equal to the operating weights of those parts
multiplied times the following factors:
I Type of Equipment Factor Cp
Rigidly supported equipment
I such as pumps and control
panels. 0.50
I Engine -Generator 0.50
750-gallon Fuel Tank • 0.50
I : Surge Tank 0.50
Load is to be applied at the center of gravity of the part
I' and to be in any direction horizontally. Design stresses
shall be in accordance with the specifications for design of
the American Institute of Steel equipment. All equipment shall be anchored as required and/or as detailed on the I drawings.
I
I '-3.
. •
The contractor shall submit seismic design calculation for
the above listed equipment for review by the Engineer. Said
calculations shall be signed and stamped by a structural
engineer, prior to submittal by the Contractor.
F. CERTIFICATION
Written certification, in a form approved by the Owner, shall
be provided by the equipment manufacturer or his authorized I representative. This certification shall verify:
1. That the equipment and its installation has been
inspected on the job by the manufacturer and that
the equipment is in first class condition
throughout, has been installed in accordance with
manufacturer's requirements and recommendations,
and that the installation is approved by the
manufacturer.
I . 2. That the equipment is operating in a safe and
satisfactory manner and is delivering capacities
and performance not less than the capacities and ' performance herein specified and/or indicated on
the drawings. .
I * * * END OF SECTION * * *
I
I
SECTION II. PACKAGE PUMP SYSTEM
A. GENERAL
I
The Contractor shall furnish and install one factory-built,
automatic duplex lead/lag pumping system including all
equipment, labor and materials. The system shall be complete
with all needed equipment factory-installed and tested on a
I skid-mounted frame and shall suit the dimensions of the
drywell as shown on the drawings.
I The principal items of equipment shall include two vertical,
close-coupled, motor driven, non-clog sewage pumps; valves;
internal piping; central control panel. with circuit breakers,
I
motor starters and automatic pumping level controls; and all
internal wiring, and appurtenances to provide for a complete
and operable pumping system.
I These specifications describe equipment as manufactured by
Smith & Loveless Division, Ecodyne Corporation. Equipment
proposed for substitution shall be superior or equal in
construction and/or efficiency to that described in the
specifications, and provide work space around equipment equal
to or greater than that shown on the drawings. Manufacturer
shall have at least five years of experience with similar
1 installations.
A packaged two-stage lead/lag pumping system, consisting of
1 - four pumps with pairs of pumps in series, is an acceptable
alternative to the single-stage system described herein. If a two-stage system offers substantially better pump efficiency, the
n
reby requiring a smaller standby engine- I generator set and smaller pump control panel, Engineer will
at the Owner's direction, evaluate the present worth of the
resulting cost savings over the anticipated service life of
I .
this facility and make recommendations to the Owner regarding
whether the proposed alternative two-stage system should be
approved.
I If the engineer's approval is obtained for alternate
equipment, the Contractor shall, at his own expense, make any
changes in the structures, building, piping or electrical
I systems necessary to accommodate the equipment. If engineering is required due to substitution of other
material, the Contractor shall pay all cost for such redesign
I work including review and approval by Owner's engineering representative. -
I
B. PRE-BID FIELD CHECK OF SITE
The Contractor shall be responsible for visiting the site of
the work prior to submitting a bid, examining all existing
I
conditions and ascertaining all necessary work entailed by
the plans and specifications. By submitting a bid for this
work, the Contractor shall be deemed to have made such
examination, and that he is familiar with and accepts all
conditions of the job and site.
C. OPERATING CONDITIONS
Each of the pumps shall be capable of 621 gpm of raw
unscreened sewage against a total dynamic head of 314 feet.
The level control switches shall operate the lead/lag pumps
as follows:
I
I
I
I
I
I HWL ELEV 117.5
HHWL ELEV 118.5
LWL ELEV 116.0
LLWL ELEV 115.0
Lead Pump ON
Lag Pump ON and High Water Alarm
Lag Pump OFF
Lead Pump OFF
I
I
All openings and passages in both pumps shall be large enough
to permit the passage of a sphere 3-inches in diameter.
D. PUMP SKID MOUNTING CONFIGURATION
Pumps shall be mounted to the skid in a configuration that
provides a minimum 3 feet clearance between the closest pump
or motor components. A minimum 5' distance between pump
centerlines is indicated for this purpose. Greater spacing
between pump centerlines shall be provided only with
Engineer's prior approval.
The pump control panel shall not be mounted to the pump skid.
Rather, it shall be separately installed within the pump room
as indicated on the drawings.
The pump system shall be installed in a recessed area of the
I pump room floor slab, as shown; such that the top surface of
the skid is a even with the top of the concrete floor slab.
I E. PUMPS
The pumps shall be vertical, non-clog sewage pumps of heavy
cast iron construction especially designed for the use of I mechanical seals. In order to prevent seal damage caused by
lineal movement of the shaft, the bearing nearest the pump
impeller shall be locked in place so that end play is limited
I to the clearance within the bearing. To minimize seal
failure resulting from shaft deflection in the mechanical
seal caused by the radial thrust of the pump, the shaft from
the top of the impeller to the lower bearing. shall have a
I
minimum diameter of 1-7/8" for motor frame sizes 213 through
286; 2-1/8" for motor frame sizes 324 and 326; and 3" for ' frame size 364 and larger. The motor shaft between bearings
shall be larger.
The bearing nearest the impeller shall be designed for the I combined thrust and radial load. The upper bearing shall be
free to move axially with the thermal expansion of the shaft
I
and shall carry only radial loads.
The shaft shall be a solid stainless steel shaft through the
pump and bottom bearing to eliminate corrosion within the
I pump or the mechanical seal. Removable shaft sleeves will
not be acceptable unless the solid shaft under the sleeve
meets the specified minimum diameter.
The pump impeller shall be of the enclosed type made of
close-grained cast iron and shall be keyed and secured to the
motor shaft by a stainless steel cap screw equipped with a
Nylock or other suitable self-locking devise. The impeller
shall not be screwed or pinned to the motor pump shaft and
shall be readily removable without the use of special tools.
Both the end of the shaft and the bore of the impeller shall
be tapered to permit easy removal of the impeller from the
shaft. To prevent the buildup of stringy materials, grit and
other foreign particles around the pump shaft, all impellers
less than full diameter shall be trimmed inside the impeller
shroud. The shroud shall remain full diameter so that close
minimum clearance from the shroud to volute is maintained.
I .- (In lieu of a full diameter shroud, stainless steel wear
rings may be furnished.)
The motor shall be attached to the pump volute with a
one-piece cast iron adapter and backhead. The pump shall be
arranged so that the rotating element can easely be removed
from the volute without disconnecting the seal system or
electrical wiring or disassembling the motor, impeller,
backhead or seal, so that any foreign object may be removed
from the pump or suction elbow. Volute or suction elbow
clean-outs will not be an acceptable substitute.
The pump shaft shall be sealed against leakage by a double
mechanical seal installed in a bronze seal housing
constructed in two sections with registered fit. The housing
shall be recessed into the pump backhead and securely
fastened thereto with stainless steel cap screws. The inside
of the seal housing shall be tapered to facilitate the
replacement of the seal parts. The seal shall be of double
carbon and ceramic construction with the mating surfaces
lapped to a flatness tolerance of one light band. The
rotating ceramics shall be held in mating position with the
stationary carbons by a stainless steel spring. The seal
housing with assembled parts, shall be so constructed as to
11-3
be readily removable from the shaft as a unit and shall be
provided with tapped jackscrew openings to assist in removing
it from the backhead.
The seal shall be pressurized and lubricated by water taken
directly from the pump backhead through a filter to the seal
I housing and introduced between the upper and lower sealing
surfaces. The filter shall be of corrosion-resistant
I
materials and shall screen out all solids larger than 50
microns. The filters shall be specifically designed for use
with raw sewage. The seal system shall contain a brass valve
connected near the top of the seal housing to permit the
relief of any air trapped in the seal unit. A manually I operated brass valve shall also be provided to vent the pump
volute.
I The pump volute shall be free from projections that might
cause clogging or interfere with flow through the pump.
I The rotating parts of each pump and its driving unit shall be
dynamically balanced by the manufacturer before final
assembly.
I The pump shall be supported by a heavy cast iron base with
four legs to provide maximum rigidity and balance. The
height shall be sufficient to permit the use of an increasing
I suction elbow whidh shall be provided when the nominal pump
size is smaller than the suction line. The suction and
discharge openings shall be flanged, faced and drilled
I 125 -pound American Standard.
Pumps shall be Smith & Loveless Model 4D5, or equal. The
design pump curve is shown on Sheet 38 of the construction
I drawings.
F. MOTORS
I The pump motors shall be vertical, solid shaft, NEMA P-base,
squirrel-cage induction type, suitable for 3 phase, 60 cycle,
480 volt electric current. They shall have Class F I insulation, suitable for temperatures up to 115°C, but the
motors shall have Class B temperature limits of 90°C rise by
resistance, at 115% rated load. The motors shall have normal
I starting torque and low starting current, as specified for
NEMA Design B characteristics. They shall be explosion proof
design, suitable for reduced voltage starting, WYE-DELTA
I type, with six leads brought out for connection to the
starter.
I Leads shall be terminated in a cast connection box and shall
be clearly identified. The motors shall have 1.15 service
factor.
I'
I
The motor-pump shaft shall be centered, in relation to the
motor base, within .005". The shaft run-out shall be limited
to .003".
The motor shaft shall equal or exceed the diameter specified
under sewage pumps, at all points from immediately below the
top bearing to the top of the impeller. To reduce overhung
loads, the dimension from the centerline of the lower bearing
to the top of the impeller hub shall not exceed 6". A
bearing cap shall be provided for the bottom motor bearing.
Bearing housings shall be provided with fittings for
lubrication as well as grease relief fittings.
The motor shall be fitted with heavy lifting eyes, capable of
supporting the entire weight of the pump and motor.
I The motors shall be sized to be non-overloading over the full
range of pump operating conditions, and shall be 150 BHP minimum.
I G. CONTROL
The control equipment shall be mounted within a NEMA Type 1,
dead-frOnt enclosure, fabricated of steel and reinforced as
required. The circuit breaker, motor-starter section shall
be provided with removable covers, complete with suitable
latching devices. Contractor shall furnish reduced voltage
starters of the closed transition WYE-DELTA type. All
circuit breakers, motor-starter reset buttons and pump
control switches shall be mounted so that they are operable
without opening the high voltage cabinet. The blower timer
shall be mounted on the lower front hinged section. The
pressure switches shall be mounted on the side of the
cabinet. It shall not be necessary to remove the front of
• the cabinet to make minor adjustments to the blower times,
etc., or the pressure switches.
I A grounding type convenience duplex outlet shall be provided
on the side of the cabinet for operation of 115 volt AC
I devices.
Thermal magnetic air circuit breakers shall be provided for
•
I motor,
branch disconnect service and over-current protection of all
control and auxiliary circuits. Magnetic reduced.
voltage starters with under-voltage release and overload
coils for each phase shall be provided for each pump motor to
I give positive protection. Each single-phase auxiliary motor
shall be equipped with an over-current protection device, in
addition to its branch circuit breaker, or shall be impedence
I
protected.
All switches shall be labeled and a coded wiring diagram
shall be provided. All wiring shall be color coded.
11-5
I
To control the operation of the pumps with variations of
sewage level in the wet well, an air bubbler system shall be
provided, complete with two air compressors, flow indicator,
bubbler line, and a sensitive pressure switch for each pump.
I The two air compressors shall be of the close-coupled,
oil-less type. Each compressor shall have a minimum capacity
of 0.2 cubic feet of free air per minute at 10 PSI. It shall
I
incorporate a single phase, 60 cycle, 115 volt, drip-proof,
brushless type, electric motor. A motor driven timer shall
be provided to automatically alternate the compressors every
five minutes. Wiring and piping of the air compressors shall
I be so arranged that one compressor may be removed without
removing the other compressor from service. If a stored air
bubbler system is used, two (2) compressors with tanks shall
I be provided including an alternator to alternate the
compressors. Additionally, a purge system to divert the full
tank air pressure to the system shall be provided.
I The pressure switches shall be of the mercury-tube type, with
sensitive pressure elements and independent high and low
adjustments for each pump capable of a minimum differential
I of 12" water column.
An automatic alternator with manual "On-Off" switch shall be
I provided to change the sequence of operation of the pumps on
the completion of each pumping cycle. Provisions shall also
be made for both pumps to operate in parallel should the
level in the wet well continue to rise above the starting
I - level for the lead pump. Running time meters shall be
provided for the pump motors.
H. PIPING
Pump suction and discharge lines shall be Schedule 40 steel
or Class 50 ductile iron pipe terminating within the limits
indicated on the drawings for the package pump system. A
bronze fitted plug valve shall be installed on the suction
line. The discharge line from each pump shall be fitted with
a bronze fitted check valve and a bronze fitted plug valve,
and expansion joint. The diameter of all pipe and valves
shall be as shown on drawings.
I The check valves shall be of the spring-loaded lever type so
that the clapper can be lifted to back-flush the pump and
suction line. Four-inch, straight-through check valves 6"
I and larger and increasing check valves, 6"x10" shall have
stainless steel shaft with non-lubricated packing glands.
The common discharge. riser pipe and the discharge outlet ' shall be Schedule 40 steel, plain-end pipe within the limits
shown on the drawings.
All portions of the air bubbler line (both within the pump
room and within the wet well) shall be furnished by the pump
system manufacturer. This line shall be 1/2" nominal
stainless steel tubing, terminating in a 1/2" NPT fitting (in
the pump room) to accept the 1/2" flexible bubbler line
extending to the wet well.
A return loop to the bubbler line shall be provided to
protect the station from flooding.
VALVES AND FITTINGS PROVIDED BY THE PUMP SYSTEM
MANUFACTURER
Plug valves shall be Dezurik or equal. Flex couplings shall
be Dresser or equal.
PRESSURE GAUGE
The pump system manufacturer shall furnish a pressure gauge
that is tapped into the vertically rising portion of the
common discharge header. This gauge shall not be directly
mounted to the discharge piping. Instead, this gauge shall
be mounted to a fabricated steel stand that shall be bolted
to the concrete floor. The pump system manufacturer shall
provide all fittings, hoses and accessories required to
provide a complete installation. The steel stand shall be
fabricated from 2" O.D. Schedule 40 steel pipe and 1/4-inch
thick steel plate. A 6"X6" steel plate shall be welded on as
a base plate, and a 2"x4" (nominal) steel plate welded on as
mounting plate for the gauge. Anchorage to the concrete
floor shall be by four 1/2" diameter stainless steel anchor
bolts. Gauge stand location shall be as approved by the
Engineer.
Pressure gauge shall be plain case, bottom connection with
bronze bourdon tube and bronze or stainless steel movement.
Gauge accuracy shall be plus or minus 1 percent of full
scale. Range shall be 0-200 psi. Dial size shall be .4-1/2
inches. Gauge shall be liquid filled with glycerine or
silicone.
A gauge protector shall be provided. Protector shall be
I
flanged diaphragm having a stainless steel diaphragm and
1/2-inch connection. Gauge and protector shall be supplied
as a unit, factory filled with glycerine.
I K. WIRING
The pump skid shall be completely wired at the factory,
except for the power feeder lines and field wiring to connect
LII
the pumps and accessories to the remotely-mounted pump
control panel. All wiring in the pump station shall meet the
I requirements of the National Electrical Code and shall be
coded as indicated on the wiring diagram. All wiring outside
the panel shall be in conduit, except for 115-volt accessory
I
.items, which are provided with connecting insulated service
cord. The manufacturer shall provide conduit from the
control panel to receive the feeder lines. The conduit shall
I
. terminate, in a threaded conduit connection.
L. FACTORY TESTS
I All components. of the pumping equipment shall be given a
certified operational and efficiency test at the factory to
check for excessive vibration, for leaks in the piping or
seals, and for correct operation of the automatic control
I system and all auxiliary equipment. The pump suction and
discharge lines shall be coupled to a reservoir and the pumps
shall recirculate water for at least one hour under simulated
I service conditions. The automatic control shall be adjusted
to start and stop the pumps at approximately the levels
required by the job conditions.
I Factory test instrumentation must include flow measuring with
indicator; compound suction gauge; bourdon tube type
I
discharge pressure gauge; electrical meters to measure
amperes, volts, kilowatts and power factor, speed indicator;
vibrator capable of measuring both amplitude and frequency.
The tests shall be in conformance with the test code of the I Hydraulic Institute Standards and the following requirements:
I
i. Test data sheets and curves of test results shall
be submitted to the Engineer for review. Test
information for each pump shall be compiled on data
forms as recommended in the test code of the
I Hydraulic Institute Standards. Test data sheets
shall be certified and signed by a Registered
Professional Engineer.
2. Notice of the pump tests shall be given to the
Engineer no later than 20 days prior to the
I
scheduled test date. The Engineer shall have the
right to witness tests and inspect equipment prior
to shipment.
I M. SPARE PARTS
A complete replacement pump shaft seal assembly shall be
I furnished. The spare seal container shall include complete
installation instructions. A spare filter element for the
seal filter shall also be provided in the same container as
the pump shaft seal. Spare volute gaskets for the sewage
I ' pumps shall also be furnished.
I
N. INSTALLATION AND OPERATION
I . Installation of the pumping equipment and related
appurtenances shall be done in accordance with written
instructions provided by the manufacturer.
I The manufacturer shall provide the services of a factory
trained representative for a maximum period of one day to
perform initial startup of the pump station and to
I instruct the Owner's operating personnel in the operation and
maintenance of the equipment.
0. GUARANTEE
The manufacturer shall have a minimum of five years'
I
experience in the design and manufacture of automatic
factory-built pump stations and shall guarantee for one year
from date of start up or eighteen months from date of
shipment, whichever is shorter, that all equipment will be
I free from defects in design, material and workmanship.
Warranties and guarantees by the suppliers of various
components in lieu of a single source responsibility by the
I manufacturer will not be accepted. The manufacturer shall
assume prime responsibility for the guarantee of the pumping
system.
In the event a component fails to perform as specified or is
proven defective in service during the guarantee period, the
manufacturer shall provide a replacement part without cost to
the
Owner. He shall further provide, without cost, such
labor as may be required to replace, repair or modify major
components such as the pumps, pump motors, sewage piping
manifold, etc. The replacement or repair (including costs of parts' and
labor) of those items normally consumed in service, such as
pump seals, oil, grease, etc., shall be considered as part of
routine maintenance and station upkeep.
It is not intended that the manufacturer assume responsibil-
ity for contingent liabilities or consequential damages of
any nature resulting from defects in the Contractor's
-workmanship.
- The manufacturer shall further provide a complete and
detailed installation, operation and maintenance manual.
I This manual shall cover, in addition to installation and
general operating procedures, the operation, maintenance and
servicing procedures of the major individual components
provided with the pump station.
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P. FIELD TESTS
I i. Functional Test - Prior to performance testing, all
equipment shall be inspected for proper alignment,
quiet operation, and proper connection by means of
I
a functional test.
2. Vibration Test - The complete assenthly, consisting
of the driving unit and pump, connected and in
I normal operation, shall not develop amplitudes of
vibration exceeding limits recommended by the
current edition of Hydraulic Institute Standards.
I 3. Performance Test - The Contractor shall perform
field tests on all completed pump assemblies to
I
demonstrate their conformance to the Specifications
to the satisfaction of the Engineer. A test log
shall be presented to the Engineer upon the
completion of each test that records the following:
I a. Flow, as measured by plant instrumentation
and/or storage volumes.
I b. Pump suction and discharge pressures as
measured by calibrated gauges, converted to
I
. feet of the liquid pumped and corrected to
pump datum as defined by Hydraulic Institute
Standards, calculated velocity heads at the
suction and discharge flanges, and total head,
I all tabulated in feet.
C. Driving motor voltage and amperage measured
I
for each phase.
Units apparently failing to meet the Specifications
I corrected
to the satisfaction of the Engineer shall be
as necessary and retested.
A satisfactory field performance test will be
I required prior to final inspection and acceptance
of the pump station work.
I * * * END OF SECTION * * *
I
SECTION III. STANDBY ELECTRIC POWER SYSTEM
I A. GENERAL
The emergency standby electric power system shall be a diesel I fuel powered, self-cooled radiator type system. Included
with the engine-generator set shall be dual mufflers, dual
exhaust pipes, starting batteries, battery charger, cables
I and racks, 1,000-gallon fuel storage tank, 20-gallon fuel
transfer tank and lines, automatic transfer switch and all
accessories to make a complete system. Unit shall be skid
mounted for indoor installation. Fuel tank will be mounted I remotely and shall be able to supply fuel to the engine for a
minimum period of 24 hours continuous operation.
I The standby plant shall be rated 450kw (562.5 KVA) at 0.8 power factor, 277/480 volts, 3 phase, 4 wire, 60 Hertz, AC
similar to Kohler #450R0Z71, complete with all accessories as
I listed in these specifications. Generator and engine shall
be a matched set completely factory assembled.
I B. GENERATOR
The generator shall be four pole, brushless, 10 lead
reconnectable of drip-proof construction with amortisseur
I windings. Insulation shall be Class F with epoxy varnish.
Generator field current shall be controlled by a rotating
thyrister bridge module optically coupled to a firing circuit
I type voltage regulator. The exciter shall be rotating
brushless type.
I
Radio-interference suppression meeting commercial standards
shall be supplied. Voltage regulation shall be within plus
or minus 2% of rated voltage, from no load to rated load.
I C. CONTROLLER
The engine mounted controller shall be vibration isolated on
the generator frame. The controller shall contain the I following factory installed, wired and tested devices:
I
1. Complete standby 2 wire start-stop which shall
operate on activation of a remote control.
Overcranking protection designed to open the cranking circuit if engine does not start after
30-90 seconds, complete with cranking reset button.
Five minute time delay to permit unloaded running I of the engine after transfer of load to normal.
Emergency shut-down switch for immediate stopping.
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5. A.C. Voltmeter - 0-300 volts (phase voltage).
1 6. A.C. Amtneter - 0-800 amperes.
7. Frequency Meter - 55-65 CPS.
1 8. Overcurrent circuit breaker.
9. Indicating lights (individual) to show conditions I of:
High Water Temperature
Low Oil Pressure 1 C. Overspeed
d. Overcrank
I
. e.. Low Fuel
10. Circuit for remote alarm. (Remote alarm shall
indicate on telemetry unit.)
I D. ENGINE
I 1. The prime mover shall be diesel fueled, 12 cylin-
der, 4 cycle liquid cooled and governed at a speed
of 1800 RPM. Fuel shall be #2 fuel oil.
1 2. Starting shall be by a 24 volt, positive engage-
ment, solenoid shift starting motor. Starting
I .- system shall be designed for restarting in the
event of a false start, by permitting the engine to
come to a complete stop and then re-engage the
I
starter. Engine shall be equipped with the
following:
Two - 220 amperes hour, 12 volt starting
I batteries including rack and proper cables.
Lube oil filters.
C. Oil bath air cleaner.
Over-speed cut-out. I
d.
Radio suppression.
Low oil pressure cut-out.
I High water temperature cut-out.
Gas proof, seamless, stainless steel, flexible
exhaust connections.
Flexible fuel connections.
I i. Oil drain extension.
3. The unit shall be factory installed on a fabricated
I
steel skid base complete with vibration isolators
between the unit the base. and
4. Unit shall be supplied with a 30 amperes battery
I charging D.C. alternator.
I
The engine coiling system shall be radiator type
with pusher fan.
1 The entire assembly with the exception of the 750
gallon fuel storage tank, 'shall be installed in the
generator room and shall be complete with the
I . following accessories:
Duct collar on radiator end for ducting of
I' .cooling air.
Dual, 5" NPT exhaust outlet
C. Battery rack.
.d. Dual residential mufflers
I e. 20-gallon day tank and pump as required for
•
. fuel system.
I
. Roof thimble for exhaust pipe exit.
Rain cap on exhaust outlet.
High temperature lagging on exhaust pipe and
mufflers.
I i. 750-gallon fuel storage tank.
E. AUTOMATIC TRANSFER SWITCH
I Furnish a 3 pole electrically operated, mechanically held
automatic transfer switch. Switch shall be rated at
800 amperes, 277/480 volts, 4 pole, 4 wire. Switch shall be
I furnished complete with the following:
Test switch to start plant and transfer load.
Time delay on momentary outage (3 seconds). .I Time delay on transfer to normal (5 minutes).
Differential voltage relay (70% pickup, 90% drop
I
out).
Manual return to normal pushbutton.
Engine starting contacts.
Pilot light on switch cover to indicate when switch
I is in emergency position.
In the event of failure of the automatic transfer mechanism,
means for manual operation shall be provided. The transfer
I switch shall include a test switch to simulate normal source,
power failure and an automatic battery charger with an output
1. .voltage matching the engine starting system.
The transfer switch shall include an in-phase monitoring
accessory to prevent excessive in-rush currents from
I ' transferring motor loads.
F. ABOVE-GROUND FUEL OIL STORAGE TANK
I Tank shall be 750 gallon capacity, horizontal configuration,
constructed of steel, double-wall construction, UL-listed for
aboveground service. Each wall of the tank shall conform to
I UL -142 and appropriate NFPA codes. Tank shall have 18-inch
I,
111-3
LI
minimum manhole with provisions for emergency venting, and
3-inch threaded openings for inlet, return, fill, and vent
I and 1-inch opening for level gauge and drain. A 3-inch
diameter opening shall be provided at both ends of the tank
to allow insertion of a rod into the annular space between
I the double tank walls,
tank. The tank shall
to check for leakage from the
be furnished clean and dry inside
interior
with
red iron oxide primer coating. Plug all openings prior to
- shipment.
U Anti-siphon valve shall be suitable for diesel and shall have
maximum capacity of 50 gph. Valve shall be 1-1/2 inch,
I bronze construction, Preferred Utilities Corporation, or
equal.
I Foot valve shall be brass double poppet with metal-to-metal
seat, 20-mesh inlet screen, 1-1/2-inch NPT, McDonald Model
913, or equal.
I. Fill cap shall be 3-inch NPT with cast-iron body, brass lid,
Buna-N washer, complete with locking hasp, Emco Wheaton No.
A-0752, or equal.
I Vent shall be iron body, bronze fitted, 3-inch, McDonald
Model 925TU, or equal. Pressure settings shall be 1 ounce
I
vacuum and 2 ounce positive pressure.
Ball float valve shall be Emco Wheaton Model A75-001, or
equal.
I Level gauge shall be a remote reading hydrostatic type with
hand pump purge. Gauge shall be furnished with a scale range
corresponding to tank size and shall be wall mounted and
I located as shown on the Drawings. Provide gauge with dial
calibrated in gallons with a 0 to 1,000 gallon range, 1/4
inch O.D. copper tubing, and air chamber. Level gauge shall
I be Pneumeractor Model P-5.
A dry breather shall be provided to control the accumulation
of moisture within the annular space between the two tank I walls. The dry breather shall be a Model DB-5 as
manufactured by C.M. Kemp, or equal. ' Contractor shall provide all piping, fittings and
appurtenances as indicated on the drawings, specified herein,
or are otherwise necessary for a complete fuel supply system.
I G. SYSTEM RESPONSIBILITY
I
All parts of this system shall be by one manufacturer so
there will be one source of supply and responsibility.
System shall include maintenance manual •and parts list.
I.
111-4
1
System shall be warranted for a period of one hear from date
of installation. Manufacturer shall be Onan, Kohler or
equal.
FACTORY TESTING, INSTRUCTIONS, WARRANTY
The automatic transfer switch and engine-generator set shall
be tested by the manufacturer prior to shipment. Before
installation, a certified copy of the factory full-load test
on the generator set supplied shall be submitted to the
engineer for approval.
FIELD TESTING
Following complete installation of the engine generator set,
transfer switch and associated work at the site, the system -
shall be started up and tested by a factory trained
manufacturer's representative to the complete satisfaction of
the Owner and Engineer, including a test at actual system
full load.
* * * END OF SECTION * * *
SECTION IV. SURGE CONTROL EQUIPMENT
A. GENERAL
Description - This section includes materials,
testing, and installation of a vertical hydro-
pneumatic tank for surge control, including a
pressure vessel, level gages, accessory gages and
piping. All materials and equipment shall be
suitable for raw sewage applications.
Submittals
I I -
Submit layout drawings showing dimensions of
equipment and accessories. Show equipment -
weights and anchor bolt designs. Show weight
of pressure vessel, both. empty and filled with
water. Provide dimensional drawings and
layouts for sight gages and try valves.
Submit mathematical computer analysis of
hydraulic conditions which determine the
design.
C. Submit structural calculations for design of
tank and its supports including seismic
loading.
ci. Submit ASME Forms U-lA for the pressure vessel
certifying that pressure vessel meets the ASME
Boiler and Pressure Vessel.Code requirements.
3. Manufacturer's Services - Provide equipment
manufacturer's services at the jobsite. for the
minimum man-days listed below, travel time
excluded:
One man-day for installation assistance and
inspection of the surge control system.
One man-day for field testing and adjustment
of the surge control system operations.
C. One man-day to instruct the Owner's personnel
in the operation and maintenance of the surge
control system. . .
4. Manufacturers - The surge control system shall be
manufactured by Fluid Kinetics Corporation,
American Air Filter, or equal.
I
1 'V-i
I
I
I
I
I
I
5. Performance Guarantee - Provide a written guarantee
of performance, materials, and workmanship guaran-
teeing that the surge control system will conform
to the design criteria specified. Such performance
shall be verified by the field testing specified.
In the event that the test results show that the
surge control equipment fails to comply with the
design criteria, upgrade or reconstruct the surge
control system so that it meets the design
criteria.
B. MATERIALS
1. Hydraulic Design Criteria - The system for which
the surge control device is to be provided consists
of a pumping station with a discharge pipeline.
Assume the following values or factors in perform-
ing the surge analysis and designing the tank:
"Old" System "New" System
Hazen-Williams
friction factor:
Flow rate through
pumping station:
Number pumps "ON"
C = 110
620 gpm
1
314 ft.
C = 150
1030 gpm
2
HI Maximum allowable
pressure due to
surge, in tank or
pipeline: 320 ft.
~ I
Minimum allowable
pressure due to
surge, at any point
in pipeline: no column
separation
no column
separation
Assume no inertia assistance from pumps.
A 4-inch I.D. steel pipe will connnect the pressure
vessel to the 8-inch O.D. discharge pipe.
Connector piping will be approximately 11 feet long
and include a right angle bend as shown on the
construction drawings.
A check valve will be installed on the discharge
piping from each pumping unit.
I
I IV- 2
I
1
I
I
I
The discharge pipeline ground profile is shown on
the construction drawings. The pipe materials,
I lengths and working pressure classes are shown on
the profile.
The design analysis should include consideration of I a power failure when the pumping station is
producing the "worst case" design flow condition.
I Size tank with allowances for:
Ten percent volume seal at lowest surge
I pressure anticipated at tank after power
failure with "worst case" design .f low rate.
Water level control band of 3 inches.
The minimum net tank volume shall be 500 gallons.
I Structural Design Criteria - Design the tank,
supports, and tiedown lugs for the seismic
conditions specified in Section I.
Pressure Vessel -
I
a. Materials for the tank, design, and shop
fabrication and inspection shall comply with
Section VIII of the ASME Boiler and Pressure
Vessel Code for Unfired Pressure Vessels, with
I .only the plate steels in Table UCS-23 of said
code being used. Design pressure shall be at
least 10% above the maximum surge pressure and
.shall be a minimum of 175 psig. Provide tank I with support structures, bearing plate, and
neoprene pads prepared to be bolted to
I
concrete floor slab.
b. Provide ASME code stamp and pressure rating on
pressure vessel.
I C. Provide 12-inch by 16-inch elliptical access
manhole, flanged outlet for pipe connection to
I
manifold header, threaded couplings for
connecting gages and valves. Couplings shall
be 3,000-pound, WOG forged steel, per ASTM
A105, Grade 70. Threads shall comply with
I ANSI B2.1. Joint lubricant shall be Teflon
joint compound or Teflon tape.
Liquid-Level Gages - Provide tubular-glass liquid- I level gages, having 3/4- inch tube O.D. Minimum
viewing length shall be 24 inches per gage.
I operating
Provide sufficient gages to view the entire
range of water levels in the tank.
I
Connections shall be threaded, 3/4-inch, per ANSI
B2.1. Provide isolation valves with ball checks to
I prevent loss of liquid upon gage breakage. Valves
shall be offset pattern with integral bonnet.
Valve bodies shall be bronze (ASTM B61 or B62).
Provide drain cock on the lower valve. Valves I , shall comply with ASME Boiler and Pressure Vessel
Code. Valves and gages shall have a minimum
pressure rating of 175 psi WOG. Gages and valves
I shall be Pénberthy Hodaille Model K3B, Ernst Gage
Company Model EEP36A, or.equal.
, 5. Safety-Relief Valve - Safety-relief valve shall I comply with the ASME Boiler and Pressure Vessel
Code. Valve shall have a pressure rating of at
I
' least 350 psi WOG. Valve shall have bottom inlet
and side outlet. Inlet shall have MPT threads,
ANSI B2.1. Valve shall incorporate a calibrated
spring set to allow the valve to open at a pressure
I of 300 psig. Valve shall be Consolidated Figure
1541-3, Lunkenheimer Figure 1705 or equal.
I
C. EXECUTION
1. Welding - Welding shall comply with the ASME Boiler
I
and Pressure Vessel Code, Section VIII.
2. Painting and Coating -
I .- Coat the interior of the pressure vessel per
Painting Section. Line the probe well the
same as the pressure vessel. Apply coating at
I
shop.
Coat the exterior of the pressure vessel per
Painting Section. Apply prime coat at shop.
I Apply finish coat in field.
3. Field Testing - Test the surge control system by
I; operating pumps and shutting off the main power
disconnect switch for the pumping station to
simulate pump power failure. Start with power
I
failure with one pump running. Then operate with
power failure for two pumps running. Continue
testing until the surge control system has been
demonstrated to control surge with power failure
I and all pumps running. Attach pressure detectors
with a strip chart recorder to record the pressures
in the system upon commencement of power failure.
Locate the recorders to cover the critical high I, pressure and low pressure surges.
I * * * END OF SECTION * * *
IV-4
SECTION V. ULTRASONIC FLOWMETER
A. GENERAL
The Contractor shall furnish and install the 8-inch diameter
ultrasonic flowmeter, complete in accordance with these
specifications and as shown on the drawings. The flowmeter
shall be of the two-path chordal acoustic type which measures
the flow by transmitting acoustic pulses between transducers
mounted on the pipe. A 120-volt, single-phase, 60-hertz
power supply will be provided for the flowmeter to power the
transmitter, flow recorder, and readout instruments.
Equipment to be furnished shall include the following:
1. One ultrasonic flowmeter (consisting of two pairs
of transducers) installed in the flowmeter vault.
2. One single-pen, 7-day circular chart recorder
installed in the emergency generator room.
I 3. One flowmeter transmitter installed in the
emergency generator building. Transmitter shall
have a digital readout.
I 4. One remote digital indicator installed in the pump
room to provide individual readout of flow,.
I • 5. Transducer cable and conduit.
6. Accessories required for complete flow measuring
- installation.
- The ultrasonic flowmeter shall be Nusonic Model 9000 or
approved equal. The 7-day circular chart shall be CCR Series
I by Teleproducts Corporation, or approved equal.
B. OPERATING CONDITIONS
I The flowmeter shall accurately measure the flow over the flow
range of 0-1500 gallons per minute. The flowmeter shall
measure the flow within plus or minus 1.0 percent of actual
flow for all flow with velocities above 1 foot per second and
up to the maximum flow given above.
I . The water to be measured will be domestic sewage with
estimated average solids content of less than 1.0 per cent.
The maximum waterhead in the meter pipe at the transducer I housing will be approximately 320 feet.
The transmitter to be installed in the flowmeter vault shall
be suitable for operation in the ambient temperature of 0 to
I 66 degrees C and shall be equipped with automatically
operated heater and thermostat.
I
. C. MATERIALS
All of the equipment described below regardless of
manufacturers required to complete a system shall be
I , furnished by one supplier. Component devices which perform
similar functions in each system shall be purchased from the
same manufacturer. Flowmeter cable shall be installed as
I specified in the Electrical Section.
Transducer Assemblies - Each transducer assembly
I
shall be watertight and shall consist of a wetted -
transducer with holder to allow 'for transducer
replacement while the pipe is under pressure.
Transducer holders which will be in 'contact with
I water shall be made of stainless steel.
Electronic Converter Transmitter - The electronic
transmitter shall be capable of accurately I
.
converting transducer pulse signal input to 4 to 20
milliamperes. The converter shall be installed in
a NEMA type 4X sealed enclosure suitable for
installation in the allotted space as shown on the
drawings. The enclosure shall be equipped with a
hinged door and/or glass window through which the
specified displays can be read. Each converter I .-
shall provide the following displays, output
signals, and contact outputs:
I .a. Flow Indicator - The flow indicator shall be
of a four-digit display to indicate the flow
in gallons per minute. The least significant
I digit shall be in single units of gallons per
minute. Leading zeros of the readout shall be
suppressed.
I b. Flow Totalizer - The flow totalizer shall be
an eight-digit (minimum) display to totalize
I
the quantity of water directly in million
gallons. Totalizers shall display totalized
flow with the least significant digit in
hundredths of million gallons. Leading zeros
I .
of the readout shall be suppressed. The
totalizer shall retain the. totalized readout
upon loss of power.
I . C. Analog Output - A 4 to 20 milliampere flow
output shall be provided for driving the 7-day
circular chart recorder. The converter shall
I be capable of driving an 800-ohm load.
I
I
3. Flow Recorder - One electronic 7-day circular chart
flow recorder shall be provided and shall be panel
mounted with the flow totalizer in the emergency
generator room. The recorder shall be mounted in
an indoor-type metal wall-mounted case which shall
I
. be moisture and dust resistant.
The case shall be provided with a hinged door with
glass window through which the chart can be read.
I The recorder shall be driven by a self-starting,
120-volt, single-phase, 60-hertz, synchronous-
motor, electric-clock-type drive. The recorder
I shall be suitable for operating on a 4-20 milli-
ampere flow input signal received from the flow-
meter.
I The recorder shall be of the direct-reading type,
uniformly graduated in gallons per minute to cover
the total capacity of 1,500 gallons per minute.
• The paper on which the charts are printed shall be
of good quality, nonbiotting, with a low coeffi-
cient of shrinkage. Ink shall be free flowing and
I of a permanent color. The recorder shall use
sealed-type, disposable, ink pen cartridges. The
recorder pen shall be readily adjustable and the
chart or chart holder shall be adjustable to match
I the time at which the chart is placed in service
without disturbing the instrument gearing.
I .. 4. Spare Parts - The Contractor shall furnish a
recommend list of spare parts for all equipment
furnished under these specifications with per-item
costs for each unit. The list shall include I recommended spare parts for transducer modules and
assemblies, input and output hardware, logic
I .
hardware power supplies, display hardware, and all
associated electronic subassemblies. No spare
parts hardware are to be furnished under these
specifications.
I 5. Paint and Coatings - Paint and coatings shall be as
specified in Paint Section.
I D. INSTALLATION
The Contractor shall install the flowmeter in a approved
I manner so that operation is satisfactory and the accuracy
requirements of these specifications are obtained. The
equipment shall be installed in accordance with the
instructions of the supervisory engineer in charge I representing the manufacturer of the equipment furnished.
I
The electronic converters and instruments shall be installed
in specified locations. All expansion anchors for installing
the equipment shall be furnished and installed by the
Contractor.
TESTS
The flowmeter system. shall be tested for satisfactory
operation in accordance with the requirements of these
specifications and testing codes. The Contractor shall
furnish all test equipment and additional hardware necessary
for the complete performance of the tests.
A 72-hour "continuous burn-in" test without malfunction shall
be performed on the flowmeter. This test may be performed at
the factory or in the field. Successful completion of the - 'continuous burn-in" tests shall demonstrate to the Engineer
that the flowmeter operates properly at the specified
operating temperatures.
An operational field test all be performed on the flowmeter
and readout displays after installation. The Contractor
shall provide the water (if required) for testing.
Successful completion of these tests shall demonstrate to the
Engineer that the flowmeter will operate properly under field
conditions and meet specified operating requirements.
SERVICES OF INSTALLATION ENGINEER
The Contractor shall retain a factory-trained engineer to
supervise the installation of the ultrasonic flowmeters, to
make final adjustments, and place the equipment into
operation.
MAINTENANCE AGREEMENT
For a period of one year after acceptance of the equipment by
the Owner, the Contractor shall be responsible for, without
cost to the Owner, the repair of all defects or failures
occurring in the ultrasonic flowmeter from any cause
whatsoever except for such defects or failures which are due
to negligence in the operation of the equipment by the Owner
or its agents, acts of third parties, acts of God, or acts of
the common enemy. The Contractor will be reimbursed for the
actual and necessary cost, plus 15 percent for profit and
general expense of any work or materials pertaining to
repairs or replacements that are determined as not the
responsibility of the Contractor.
The Contractor, upon notice from the Owner, shall promptly
commence and diligently prosecute the repair of any defects
or failures that develop during the maintenance agreement
period without regard to the cause of the defects or
failures. The work or repairing any defects or failures
V-4
includes the necessary disassembly, repair, replacement, and
reassembly of the equipment and any appurtenances destroyed
or disturbed by reason of such work. The Contractor shall
make necessary arrangements to have competent personnel and
suitable equipment available so that repairs or replacement
may be commenced within 48 hours after receipt of notice from
the Owner.
If the Contractor fails or refuses to make required repairs
or replacements with due promptness and diligence as
determined by the Owner, the City shall have the right to
make repairs and replacements and, unless it is determined
that the costs of such work is chargeable to the Owner, the
entire costs thereof shall be paid by the Contractor and may
be collected from the Contractor or the Contractor's surety
or sureties, or both.
* * * END OF SECTION * * *
F
V-5
I
SECTION VI. HAZARDOUS GAS DETECTION SYSTEM
I A. CONTROL MODULES
Control modules shall include a ready LED (green), and alarm
I LED (red), and warning LED (amber). Modules shall also
include a digital display as well as adjustments for zero and
gas span on the front panel. A switch will display alarm set
I points on the digital display. A second switch will lockout
alarms during calibration. Output relay contacts shall be
rated at 5 AMP @ 115 VAC. (Resistive) DPDT (Form C). One
I set of customer contacts for trouble; warning (low alarm) and
alarm (high alarm) are common for all channels..
B. HYDROGEN SULFIDE GAS DETECTION SYSTEM
I 1. Two Hydrogen Sulfide Gas Sensors, calibrated for 50
ppm full scale of hydrogen sulfide in air, shall be
I located within the pump room as shown on the
drawings. The Hydrogen Sulfide Gas Detection
System shall consist of sensors, control modules
I
and power supplies. Power to the system shall be
120 VAC and 12 VDC.
2. Sensor Assemblies - Sensors and housings shall be
I suitable for area classification Class I, Group D,
Division I as specified by the National Electric
Code. Sensors shall be capable of operation up to
I .- 5,000 feet from the control modules. Sensor shall
be electrochemical type with a one year warranty.
I
C. OXYGEN GAS DETECTION SYSTEM
General - Two Oxygen Gas Sensors, calibrated for
0-25% oxygen deficiency, shall be located within
I the pump room as shown on the drawings. The Oxygen
Gas Detection System shall consist of sensors,
controls modules and power supplies. Power to the
I system shall be 120 VAC and. 12 VDC.
Sensor Assemblies - Sensors and housings shall be
I Division
suitable for area classification Class I, Groups D,
I as specified by the National Electrical
Code. Sensors shall be capable of operation up to
1,000 feet from the control modules. Sensors shall
I be electrochemical type with one year warranty.
D. COMBUSTIBLE GAS DETECTION SYSTEM
I 1. General - Two Combustible Gas Sensors, calibrated
for 100% LEL full scale of methane in air., shall be
located within the pump room as shown on the
I drawings. The Combustible Gas Detection System
I
I
shall consist of sensors, control modules and power
supplies. Power to the system shall be 120 VAC and
1
12
2. Sensor Assemblies - Sensors and housings shall be
suitable for area classification Class 'I, Group D, I Division I as specified by the National Electric
Code. Sensors shall be capable of operation up to
I
5,000 feet from the control modules. Sensors shall
be resistant to silicone vapors and hydrogen
• sulfide. When exposed to 1 ppm HMDS
(hexamethyldisiloxane) for 200 hours, loss of
shall not exceed 10%. When exposed to • I sensitivity
100 ppm H2S (hydrogen sulfide) for 24 hours, loss
• of sensitivity shall not exceed 1%. The sensor
I
shall be constructed of stainless steel and
Hastelloy C*. Zero and Span adjustments shall be
in control module.
I E. EQUIPMENT LIST
All components shall be the product of a single manufacturer.
Equipment shall be as manufactured by MSA Instrument Division I (contact: Incom West, 581-2200: local MSA representative), of
the types specified below:
I 1 each M516 16 channel housing #467445
6 each M516 control module #466652
2 each combustible sensor #475200
I ..
2 each H2S sensor #474644 • 2 each 02 sensor #474675
1 each calibration kit #476610
1 each H2S calibration kit #459949
I 1 each bottle pentane #466193
1 each bottle 99.9% nitrogen #481317
1 each bottle H2S #467897(40ppm)
I Alternate manufacturer shall be subject to Engineer's prior
• approval.
1 F. WARNING ALARMS
I
A single red warning light shall be mounted adjacent to the
pump room stairway access hatch. This light shall be
activated whenever a "trouble" condition exists. This light
shall remain "ON" until the condition ceases.
I The light shall be mounted to a 1/4" thick steel plate that
is welded to the nearest support leg of the surge control
I tank. This light shall be a minimum 24" above grade. Light
shall be suitable for outdoor installation and shall be in a
vandal resistant housing. A test switch and circuit shall be
provided to test for a burned-out light bulb.
I
G. INSTALLATION
Contractor shall furnish and install all electrical conduit,
wiring, mounting brackets, NEMA enclosures, alarms and/or
warning lights and other accessories as required to provide a
complete installation of the control panel and all sensors.
* * * END OF SECTION * **
VI-3
SECTION VII. VALVES AND MISCELLANEOUS EQUIPMENT
A. GENERAL
Description - This section covers the work
necessary for furnishing and installing valves and
miscellaneous equipment, complete.
Submittals During Construction - Submittals during
construction shall be made on all valves and
miscellaneous equipment in accordance with Section
GENERAL REQUIREMENTS.
B. MATERIALS
Pump Room Sump Pump - Sump pump shall be
non-clogging, with 5-inch diameter bronze impeller
threaded to a stainless steel shaft. Pump shall be
capable of handling 5/8-inch spherical solids
without clogging.
Pump motor shall be an oil-filled ball-bearing
motor that is completely submersible. Motor shall
be 1/3-HP, single phase, 115V, 1750 rpm with
built-in automatic reset overload protection.
Pump operation shall be controlled by a diphragm
type pressure switch that is sealed in a watertight
I - housing. Switch setting to operate pump shall be
six inches of water level above the diaphragm.
I
Pump shall be Hydromatic OSP33A1-AB, or equal.
Pump Room Flooding Alarm Probe - The pump room
floodings alarm probe shall use the capacitance
I bridge principle to detect water level. Probe
shall be Teflon insulated with a tight fit between
the probe rod and the insulation'. Unit specifica-
tions shall be:
Power supply 115VAC
Reproducibility 0.1 pf or better
I Deadband 0.2 pf or better
Enclosure NEMA 7
Contact rating SPDT, 5 amp
I 115VAC non-inductive
Operating temperature 20°F to 140°F
I The probe shall be installed inside a 2" O.D. steel
perforated shield, the 'probe end being above pump
room floor as shown on the drawings.
I.
I
VII-1
I
Probe shall be a Capacigage Model CG-810B as
manufactured by Crane Pro-Tech Environmental I Instruments (contact D. A. Matthews/Associates;
(714/994-4321)
I 3. Pump Room Blower -
General - The centrifugal fan for the pump
room shall be the direct-drive, single-width,
I single-inlet type furnished complete with fan
housing, fan, motor, support frames, discharge
screen, and all accessories required for
I installation and operation.
The centrifugal fan shall provide 1,660
:
cubic -feet-per-minute airflow at a static - I pressure of 1-1/2-inch water gage, and a
maximum speed of 1,750 revolutions per minute.
I The centrifugal fan shall be furnished with
the manufaciYrer's standard finish.
:The centrifugal fan shall be Model D11H by I Peerless Electric-H.K.-Porter Co., or equal.
I : Materials -
I Fan - The fan wheel shall have fabricated
steel blades and the housing shall be
I fabricated steel.
The fan shall have a mounting frame suitable
I
to support the housing and motor, and
adjustable for various fan discharge
positions.
I Motor - The fan motor shall be the across-the-
line, full-voltage-starting, constant-speed-
induction type. The motor shall be rated
220/440 volts, three phase, 60 hertz, totally I enclosed and explosion proof.
I
The motor shall be provided with internal
thermal protection and shall conform to the
applicable standards of IEEE, NEMA, and ANSI.
The nameplate horsepower rating shall be
I minimum Of 115 percent of the brake horsepower
required at the specified performance.
I
:
:Manual Motor-Starting Switch - The manual
motor-starting switch shall be a single-pole,
single-throw switch capable of energizing and
I : VII-2
de-energizing the fan motor and shall provide
thermal overload protection up to 120 percent
of rated load. The manual switch shall be by
Allen-Bradley, Milwaukee, Wisconsin; or equal.
Flexible Connector - The flexible connector
shall be made of neoprene-coated glass fabric.
The flexible connector shall be not over
6-inches long and shall be complete with
devices suitable for attaching to equipment
ductwork. The flexible connector shall be
installed with sufficient slack to prevent the
transmission of vibrations. Connecting equip-
ment and ductwork shall be self-supporting and
shall not impart any twisting forces to the
flexible connector.
Miscellaneous Materials - For materials shown
on the drawings but not covered herein by
detailed specifications, the Contractor shall
furnish sàndard commercial grades of
materials that are satisfactory to the
Engineer.
C. Installation - The Contractor shall install
the ventilating systems where shown on the
drawings. The miscellaneous metalwork shall
be fabricated and installed in accordance with
HVAC DUCT CONSTRUCTION STANDARDS (First
Edition 1985), a publication of SMACNA. The
centrifugal fan shall be aligned and fastened
securely to the support platform as shown. A
flexible connector shall be installed between
the fan and the inlet air duct.
4. Engine Generator Building Ventilator
Ventilation fan shall be belt driven centrifugal
type of all aluminum construction and shall be
equipped with all necessary accessories including
bird screen, and prefabricated curb, and shall be
gravity type shutter mounted on the roof. The fan
shall be Exist Aire Type CX or Loren Cook Company
Type UCB or equal with cast aluminum airfoil
blades, aluminum housing and support bracket.
The electric motor for the exhaust fan shall be a
continuous horsepower rating.
The fan shall have a capacity of 700 cfm at a
static pressure of 1/8-inch. The fan shall be
driven by a single speed 1/3 HP motor suitable for
single phase, 115-volt, 60-cycle electrical
service.
VII-3
I
The exhaust fan shall be equipped with a thermostat
(15 amp, 120-volt, single phase contact) for
automatic control.
5. Precast Concrete Vault for Sonic Flow Meter - The
I . precast concrete vault shall be 61x6tx61 (nominal
inside demensions) and shall have a 4'x4'
double-leaf torsion hinged cover. Both the vault
and the cover shall be designed for HS-20 traffic
I ..
load. The cover shall be lockable by a recessed
- padlock or other means approved by Engineer.
Vault shall be Quickset Model 6060-BT Series with I dimensions suitable for the indicated installation,
as manufactured by Associated Concrete Products,
I Inc., or approved equal. -
Shut-off Valve for Holding Tank Drain Line -
Shut-off valve shall be an iron body, bronze
I trimmed 12 inch, Class 125 gate valve with flanged
ends. Valve shaj..t be of the outside screw, rising
stem, bolted flanged Yoke-bonnet type, with solid
I .wedge, bronze stem and handwheel.
Valve shall be Figure 1793 as manufactured by Wm.
I
Powell Company, or equal.
Gate valves 3-inch and Smaller - Valves shall be
Class 200 with a cold water working pressure of 400
I -- psi. Valves shall be bronze, nonrising stem, union
bonnet, solid disc, and threaded ends. Valves
shall be Powell Figure 380, or equal.
Check Valves 3-inch and Smaller - Valves shall be
Class 200 with a cold water working pressure of 400
psig. Valves shall be bronze, Y-pattern, with
threaded ends. Valves shall be Powell Figure 560
Y, Crane No. 36, or equal.
.9. Globe Valves 3-inch and Smaller - Valves shall be I Class 200 with a cold water working pressure of 400
psig. Valves shall be bronze, union bonnet, plug
type disc, and threaded ends. Valves shall be
Powell Figure 102, or equal.
10. Lubricated Plug Valves - Lubricated plug valves
shall be used wherever plug valves are specified or
indicated for buried or exposed service. Valves
shall be rated 200 WOG (400 psi test) unless
I
otherwise indicated, wrench operated, flanged (ANSI
Class 125) , of the indicated sizes, and shall be
round port, full pipe area valves.
I
Valves shall be Resun (713/351-2222) Figure D-451
or approved equal.
ContraOtor shall furnish lubricating fitting
extension and operating stem extension to within
six inches of ground surface for buried valves.
Operating stem extensions shall conform to City of
San Diego Standard Drawing SDW-109.
Rubber Check Valve - Rubber check valve with
slip-on end connection shall be Series TF-2
Tideflex Check Valve as manufactured by Red Valve
Company, Inc. (412/279-0044)
Precast Trench Drains - The trench drain installed
in the pump room shall consist of precast polymer
concrete channel drains presloped to provide a
minimum slope of 0.65% in the channel bottom. All
channel sections shall -have fiberglass gratings and
locking devices.
F Trench drains and grating shall be Part Nos. 601,
602 and 603 as manufactured by Quazite Corporation
(707/422-0944) . Drain Section #603 shall be cut as
required to fit the indicated space.
13. Vertical Ladder Adjustable Grab Pole - Device shall
be manufactured of high strength steel with
telescoping tubular section that locks automati-
cally when fully extended. Upward and downward
movement shall be controlled by a stainless steel
spring balancing mechanism. Unit shall be hot
dipped galvanized with special alloy spring. Unit
shall be completely assembled with fasteners for
secureing to the ladder rungs in accordance with
the manufacturer's instructions.
Device shall be LadderUp Model 2 as manufactured by
Bilco Company, or approved equal.
C. WORKMANSHIP
General - Install all materials covered by this
section in accordance with the manufacturers'
recommendations and as specified herein.
Valves - Before installation, carefully clean
valves of all foreign material, adjust stuffing
boxes, and inspect valves in open and closed
positions. Unless otherwise indicated, install
valves with the stem vertical. Mount horizontal
valves in such a manner that adequate clearance is
provided for operation. Installation practices
shall conform to manufacturer's recommendations.
VII-5
3. Testing - Valves will be tested at the same time
that the adjacent pipeline is tested. Joints shall
show no visible leakage under test. Repair joints
that shown signs of leakage prior to final
acceptance. If there are any special parts of
leakage prior to final acceptance.
* * * END OF SECTION * * *
VII-6
SECTION VIII. ARCHITECTURAL ITEMS
I A. SCOPE OF WORK
,
The Contractor shall furnish all labor, material, I transportation, tools and other contract services required
and construct and install all architectural items as
indicated on the Drawings or as herein specified. The work
i shall generally consist of, but is not limited to, the items
listed below:
Masonry Construction I Carpentry
Roofing
I
Sheet Metal Work
Caulking
Waterproofing
Metal Doors, Frames and Window Frames
I 8. Finish Hardware
The Contractor shall submit shop drawings to owner for review
and approval prior to purchase of any architectural items I covered under this section of specifications.
I
. B. EARTHWORK
Perform all earthwork for excavations, backfill and
compaction in accordance with the contract documents.
I C. CONCRETE
Perform all concrete, reinforcing and formwork in accordance
I with Section X of these Specifications.
D. MASONRY CONSTRUCTION
I . Perform all masonry construction in accordance with Section
XII of these specifications.
I E. , STRUCTURAL STEEL AND MISCELLANEOUS METAL WORK
Perform all structural steel and miscellaneous metal work in
I ' accordance with Section XI of these Specifications.
F. CARPENTRY
I 1. Scope of Work - Furnish and install all carpentry
I ,
work as indicated, and/or specified, complete.
VIII-'
I
I
1
I
I
2. Materials -
Framing Lumber - "Coast Region Douglas Fir".
Grade Mark W.C.L.A. (West Coast Lumbermen's
Association), Grading and Dressing Rules No.
16.
Each piece shall be Grade Marked by a
recognized lumber grading agency: California
Lumber Inspection Service; Western Wood
Products; Pacific Coast Lumber Inspection
Bureau; and, Western Pine Association.
The following grades shall apply: 2x3, 2x4
and 3x4 - Light Framing - Const. 1050 PSI; 2x6
and larger - Joists, Planks & Studs - No. 1,
1500 PSI; Beams - Beams & Stringers - Select
Struct. 1600 PSI; and, Posts & Columns -
Posts & Timbers - Select Struct. 1500 PSI.
Plywood - Structural Plywood, U.S. Product
Standard/PS 1-66, Structural I.
All plywood shall be "Grade Marked" by the
DFPA, Teco, or Pittsburgh Testing Agency.
Remove all sheets not grade marked.
Plywood used for structural purposes, in
locations subject to weather, shall conform to
the requirements of Structural, exterior grade
C-C or better, exposed surfaces grade "A"
sanded.
One-half inch plywood shall have a minimum of
five plys.
C. Nails - Common wire nails.
Bolts - ASTM A-307.
Lag Screws - Common.
Wood Screws - Commercial Standard.
Treated Lumber - Conforming to "American Wood
Preserving Association," Standard Specifica-
tion.
Timber Connectors - Simpson, Teco, Universal,
or equal. -
VIII-2
3. Execution
a. General Framing - Execute rough carpentry as
detailed on the Drawings, as noted in the
Specifications, and in accordance with best
practice methods. Conditions not specifically
shown are to be executed in a similar manner
to those shown. Accurately saw-cut and fit
all framing into its respective position.
Use treated Douglas Fir in locations where
wood is in contact with concrete or masonry
which is less than two feet above grade.
Lag Screws - Lag screws shall be screwed (not
driven) into place. Drill the hole to receive
shank the same diameter and depth as the
shank. Drill the lead hole for threaded
portion 60 to 70 percent of the shank
diameter, and a length equal to at least the
length of the threaded portion. Provide cut
washer below head of all lag screws bearing on
wood.
Wood Screws - Drill shank and pilot holes; do
not drive screws. Drill shank hole 7/8 of the
I shank diameter. Drill pilot hole 7/8 of the
screw diameter at the root of, the thread and a
length equal to at least the length of the
threaded portion.
Nails - Predrilled as required to prevent
I
splitting. For nailing plywood a No. 10x2-
inch nail with a 5/16-inch round head may be
used. Automatic nailing machines may be used
providing nails are driven perpendicular to
I
I the surface; oversetting of nail heads shall
be kept to a minimum. Prior to nailing,
provide a sample area for Engineer's approval.
I If, for any reason, the nailing becomes a
problem the use of the machine shall be
reviewed.
I Bolts - Drill holes for bolts with a bit
1/32-inch to 1/16-inch larger than nominal
bolt diameter. Re-tighten all bolts prior to
I the application of plaster, plywood, etc.
Use cut washer under heads and nuts of lag
I screws and bolts. Use malleable iron or plate
washer below heads and nuts of bolts in
tension.
I
I Galvanize all nails, bolts, screws, timber
connectors, etc., exposed to weather.
Lumber which has been used for forms, which is
sound and is approved by the Engineer, may be
used for blocking, bridging and other members
not carrying stress.
Contractor shall be notified before delivery
I of lumber so that he can schedule priming as
soon as it is delivered. Segregate materials
to be primed and make accessible for painting.
I b. Roof Framing - Place members with crown up.
' Provide cross bridging or solid blocking at 8
feet maximum for all joists and rafters over 8
inches in depth. Use 2-inch by 3-inch bridg-
ing with two 8d nails at each end or an
I approved type ..metal bridging.
Cutting of 'wood beams or joists shall be
limited to cuts in the top edge, not deeper I than 1/5 of the member depth, located not
farther from the beam end than three times the
I
beam depth. Cuts or bored holes shall not be
permitted without special approval by the
Owner.
Except where specifically noted or specified I ...
to be exposed to view in the finished work, it
is intended that 'all pipes, conduit, struc-
I
tural members, etc., shall be adequately and
furred in. properly
Unless detailed otherwise, splice tongued and
l grooved sheathing over a bearing surface.
Splice adjacent boards over alternate
bearing surfaces.
I Exterior or interior stud walls, at ceilings
and floor levels.
I Stud walls and partitions, including furred
spaces, so placed that the maximum dimension
of any concealed space is not over 8 feet.
I Around top, bottom, sides and ends of sliding
door pockets.
I Any other locations not specifically mentioned
above, such as holes for pipes,, shafting',
behind furring strips and similar places which
I ' could afford a passage for flames.
i . . .
.
VIII-4
I
Fire stops when of wood shall be 2-inch
nominal thickness. If width of opening is
I such that more than one piece of lumber is
necessary, there shall be two thickness of
one-inch material with joints broken.
4. Backing - Provide and install wood backing to
I indicated
receive electrical fixtures and cabinet work as
or required.
G. INSULATION
1 1. Scope of Work - Furnish and install all insulation
work as indicated and/or specified, complete.
2. Principal Work in this Section -
a. - Roof batt insulation throughout entire roof
I area between wood trusses.
F 3. Materials -
I a. Roof -Insulation shall be installed with the
vapor barrier down and shall have a resistance
I
factor of R-19, with foil face.
b. Insulation shall be mineral wool or fiberglass
conforming to Federal Specification HH-1-521D
I - Type I and II.
4. Installation -
I a. Installation of the insulation shall be in
strict accordance with the manufacturer's ' printed instructions for the specific product.
b. Insulation shall fit all framing spaces,
including areas between joists and outside
I headers, behind electrical outlets and piping
and other areas in such way as to form a
complete insulating blanket around the
area of the structure. I
interior
c\. Flanged blankets shall be positioned and
recessed as specified by the manufacturer for
I the particular use and vapor barriers shall be
on the inside heated side of the insulation
1
blanket. Vapor barrier shall be applied.
VIII-5
I
d. Ceiling insulation shall be supported with 18
gauge sag wire at 24-inch o.c. on underside of
I. insulation perpendicular to direction of roof
framing.
I
H. GYPSUM WALLBOARD
Scope of Work - Furnish and install, all gypsum
I complete.
wallboard work as indicated and/or specified,
Principal Work in this Section - Gypsum wallboard
I ceiling.
Materials -
I a. Gypsum Wallboard - Of the thickness shown,
conforming to ASTM A-36; 5/8-inch thick
standard gypsumboard and "Type X-special Fire
I , Retardant Type" gypsumboard, and water
resistant gypsum wallboard as shown on the
Drawings.
I b. Fastening Devices - Attaching gypsum wallboard
to wood: 6d cement coated box nails or cooler
type flat-head cement coated nails 1-7/8-inch
long.
C. Acoustical Caulking - Butyl caulking compound
I .- as manufactured by Tremco, Sonneborn-DeSoto,
Interchem Gibson-Homans, or equal.
d. Joint Compound and Tape and Adhesive - As I
.
recommended by the gypsum wallboard
manufacturer.
l Installation - Single Layer Application - Gypsum
wallboard shall be attached perpendicular to wood
framing members with the specified nails 7 inches
1 O.C.
Where gypsum wallboard is installed on both sides
of a partition the vertical joints shall be
I staggered so that they do not fall on the same stud
on both sides. .
Joint Treatment - All internal and external
corners, angles and joints between sheets shall be
reinforced with perforated tape and cement and
finished as follows:
I
I
.
Taping - All corners and the recess between
wailborad panels shall be filled with sufficient
I thickness of cement to completely hide the board at
all joints. The tape shall be centered on joint
and pressed tightly to the two panels using a
suitable tool. The excess cement squeezed from
I .
beneath the tape shall be laid smoothly on top of
the tape.
I .Second Coat - When the first coat is dry, spread a
second application of cement evenly over the entire
joint to beyond the shoulder of the recess or the
.tape. Third Coat - When the second coat is dry, I apply sufficient cement to even up all surfaces of
the joint.
I Apply at least two coats of cement to fill
depressions even and flush with the surface of the
board.
I Sanding - Sanr rough spots smooth between
applications of cement, smooth wherever necessary.
When dry, sand the finish coat as required to leave I joints and nail spots flush and smooth, ready for
painting.
I 6. Metal Trim
Trim Units - Fabricated from 26 gauge minimum,
electro-galvanized, zinc coated steel, treated
for adhesion of joint cement and paint, and
with slotted, drilled, or punched perforations
flanges. Trim units shall be of size and
I
in
type to fit system construction, and shall be
as manufactured by Angles Metal Trim Co., U.S.
Gypsum Co., National Gypsum Co., or equal.
l. Installation - Install trim members in accor-
dance with manufacturer's printed instruc-
tions, in proper position, plumb, true and
level. Fasten to framing with 5d cement
coated box nails through flange perforations.
Apply trim in full length pieces wherever
possible.
Corner Beads - Provide at outside corners and
I angles.
Metal Casing- Provide where gypsum wallboard
terminates at uncased openings.
I
I
Metal Trim - Provide where gypsum wallboard
edges abut horizontal and vertical surfaces of
:
other construction materials. "L"-shaped or
"Clip-on" types may he used.
I
. Finishing - Apply joint cement over trim
flanges in three coats, full thickness at bead
nose, and feather out at least 10 inches.
Ceilings - Provide all necessary blocking and
backing for installation at recessed electrical
I . fixtures and diffusers and exhaust air ducts.
Texture Finish - Apply over entire surface of
exposed gypsum wallboard by spray method to provide - I standard "orange peel" finish.
I. ROOFING
1 1. Scope of Work - Furnish and install built-up
roofing as indicated and/or specified, complete.
I 2. Preparation -
I
a. Before starting, the work surfaces shall be
smooth, firm, thoroughly set and dry and swept
broom clean.
I - b. Drainage fittings, connections, metal aprons,
metal edgings, flashing and counterf lashing,
collars and sleeves for pipes passing through
I
the roof and metal overflows shall be properly
set, or shall be on the job if they are to be
built into the roofing assembly.
I c. Statements of Materials and Methods - Prior to
the installation of all roofing, Contractor
shall provide the Owner with a detailed
I statement of the roofing procedures which will
be used. Approval of materials and data
submitted must be obtained before start of
I
:work.
Submit five copies of brochure catalog cuts,
or such written data stating amounts of
I material to be applied for phase of work per
square (100 square feet) and showing
corresponding specification number. Data will
I include the following information: Proposed
method of fastening the first two layers of
felt to the deck. Roofing applicator shall be
I
VIII-8
LII
approved by manufacturer furnishing materials
and manufacturer's letter of approval shall be
I submitted.
Samples - Submit in accordance with the
General Conditions roofing felt (6-inch by
I 12-inch sample), flashing material (6-inch by
12-inch sample), and rock (1/4-pound sample).
1
3. Materials and Execution -
All roof surfaces to receive built-up roofing
1 : shall be covered with a four-ply built-up
gravel surface fiber glass roofing and
installed in accordance with the roofing
manufacturer's current recommended specifica- I tions for the type of deck shown or specified
and with modifications described herein.
Roofing material shall equal or exceed the I . specifications for the following materials and
methods, but in all cases shall be recommended
by the manufacturer for the decks to be
covered. Packaged material shall bear UL I Class "A" label. Installation shall be only
in accordance with the listed assembly.
Materials used shall be by a single manufac-
turer.
The standard of design and quality shall be as
I follows:
Johns-Manville Specification No. 4 GIG for
concrete deck and No. 4 GNG for wood deck.
Other acceptable manufacturer's when conform-
ing to the standard shall be Bird & Son;
Pioneer Flintkote Co.; or equal.
All roofing, sheet metal fittings, drains,
gravel stops, etc., that are to be incorpo-
rated as part of the total built-up assembly
are to be installed in strict compliance with
or exceed requirements of manufacturers
current published Built-Up Roof Manual.
C. Roof Surfacing, Built-Up Roofing - Apply
surfacing materials uniformly over top layer
of roofing felts and embed in a hot pouring of
bitumen. Apply at the rate of 500 pounds per
100 square feet of roof. Surfacing materials
shall be rock. Rock shall be commercial
grade, washed, dry, and free of foreign
matter, opaque 3/8-inch to 5/8-inch sizes
complying with ASTM specification D-1863. Ten
percent maximum may be outside these size
VIII-9
I
I
I
I
requirements with rock passing a 3/4-inch
screen. Submit sample to Owner for approval
as prescribed elsewhere.
d. Metal Gravel Stops and Flashing - Supplied and
I
installed as indicated on the Drawings. Metal
in contact with roofing will be painted one
coat of bituminous paint. Install in full bed
- of mastic.
- e. Equipment Flashing - Equipment base, pipe,
roof drain, and vent flashing shall be as
I' recommended by the manufacturer.
f. General Application Requirements - All mate-
rials must be stored so they will not absorb
moisture from rain or night moisture. Apply
asphalt at temperatures between 3751 and
4500F.; do not heat above 450°F. Kettles used
I .for the heating of bitumen must have accurate
and clearly visible thermometers. Set drain
outlets. below roof deck surface to permit free
flow of water and prevent forming a water dam I at the rim. Properly seal roofing around
drains as specified by the manufacturer.
I .
Immediately after roofing
ring and tighten.
is applied, install
4. Tests and Inspections - All roofing operations
shall be subject to inspection by a Testing I Laboratory or Agency whose specialty is Roofing
Inspection, as well as the inspections which will
I
be carried
Inspections
out by the
shall be
Owner and Project Inspector.
arranged for by the Owner's
representative.
I .A pre-roofing conference shall be held at the
job-site prior to the start of any roofing work.
Attending this conference shall be representatives
I .of General Contractor, Roofing Contractor, Owner,
Roofing Manufacturer, Sheet Metal Contractor, and
representative of Roof Testing Laboratory or
I
.Agency.
Roof Cuts - Roofing may be inspected to see that it
has been installed in compliance with the specifi-
cations or manufacturer's recommendations by
requiring Contractor to cut a section 4 inches wide
by 36 inches long at right angles to way roofing is
I
. laid. For each layer of base sheets and each
application of asphalt that is found to be omitted,
an additional layer of base sheet and of asphalt
shall be required over entire roof surface.
I.
I
I
Contractor shall replace cut sections and shall
apply over said cut sections a similar amount of
roofing as in roof proper, extending each layer of
roofing 6 inches beyond underlying felts.
I Water Test - When work on roof . is completed,
Contractor shall apply water, as directed, to
insure a thorough water test of roof. Flashings
I shall be tested by slowly applying a full stream of
water from a 3/4-inch garden hose (without nozzle
attachment) along all parts of f lashings. Should
any leaks appear, they shall be repaired and that
I section water-tested again as before specified.
5. Guarantee - Before the roof will be accepted, the
I
roofer shall deliver into the hands of the Owner a -
written two-year guarantee stating (a) that the
roof flashing and counterfiashings will be main-
tained water tight; (b) that any defective mate-
rials and/or workmanship which may become evident
within the one-year guarantee period will be
replaced with the proper new materials or other-
wise made good; (c) that the roofing will lay
smooth and even; (d) that any and/or all repairs
which may be necessary on account of any of the
I
above mentioned (a) , (b), or (c) causes will be
made without any cost to the Owner. Guarantee
shall be countersigned by the General Contractor.
I J. SHEET METAL WORK
Scope of work - Furnish and install all sheet metal
I
work as indicated and/or specified, complete.
Principal Work in this Section -
I .a. Coping Cap
b. Downspouts
C. Wall louvers
:d. Metal flashings I e. ductwork
I
3. Materials -
Galvanized Steel - Sheet steel galvanized by
hot-dip process, minimum 25 gauge, unless I otherwise indicated or specified. Galvanized
steel may also be referred to as G.I. or
Galvanized Iron.
Fastenings - In connection with work of this
heading, nails, galvanizd steel, rivets,
I
tinned iron or aluminum bolts, cadmium plated
steel, screws, black-oxide treated (blued) .
VIII-"
c. Solder of Galvanized Sheet Metal Work - 50
percent lead, 50 percent tin.
d. Caulking Compound - Material shall be as
previously specified herein.
4. Execution -
Work of this section shall be governed by
Sheet Metal and Air Conditioning Contractors
National Association, Architectural Sheet
Metal Manual, October 1965, or latest issue.
Shop Drawings and Samples Required. See
General and Special Conditions.
C. Form sheet metal accurately to dimensions and
shapes indicated. Provide for expansion and
contraction in work and make water and
weathertight.. Joints and miters of G.I. work
shall be soiered. Acid fluxed work shall be
thoroughly 'ashed after soldering. Hem all
free edges. Finish appearance to be neat and
accurate.
d. Inspect and report to Owner in writing any
defects in materials or surfaces to which
sheet metal is to be applied, before starting
installation. Commencement of work will
I ,
signify acceptance of above indicated mate-
rials and/or surfaces as satisfactory.
e. Securely fasten and make weathertight all work
adjacent to or contiguous with work to be done
under other sections of the specifications.
f. Sheet metal work related to roofing shall be
furnished and installed under this section.
Form to sizes and details indicated. Metal in
contact with underlayment of roofing shall be
painted one coat of bituminous paint before
placing and shall be installed on a full bed
of mastic.
g. Painting - All painting, including prime coat,
shall be done under Section IX, Painting, of
these specifications.
h. Stationary Exterior Louvers - Shall be Type
638 as manufactured by the Airolite Company.
Louvers are to be fabricated from 16 gauge
galvanized sheet metal, bonderized and factory
finished color as selected and to have 1/2-
inch galvanized bird mesh on interior.
VIII-12
Louvers to be anchored in openings with
self-tapping screws to metal studs. Louvers
may be as manufactured by the Ventilouver
Company, Inc., Dorn Industries, Inc., or
equal.
K. CAULKING
1. Scope of Work - Furnish and install all caulking
work as indicated and/or specified, complete.
2. Principal. Work in This Section -
Caulking at typical locations to include all
exterior doors, windows and louver frames to
adjacent construction.
Expansion, contraction, construction and
pressure relieving joints.
C. Wood, metalf concrete, or masonry adjoining
dissimilar materials.
3. Materials -
Sealant -Sealant shall be based on polysulfide
polymer manufactured by Thiokol Chemical
Corporation, and shall conform to Thiokol
Building Trade Performance Specification.
Sealant shall be delivered to the site in
sealed containers, each bearing a Thiokol
"Tested and Approved" seal, manufacturer's
name, and product designated and shall be a
two component sealant, Class B, non-sag, Shore
A hardness: 20-35. One component sealer may
be used providing the materials conform to the
above requirements. Sealant shall be as
manufacturered by Presstite Division, Inter-
chemical Corporation, BFC Division, Essex
Chemical Corporation, Sonneborn Building
Products Corporation, or equal.
Primer - Shall be used and shall be as recom-
mended by manufacturer of sealant.
C. Joint Filler - shall be used and shall be
Polyester Polyurethane foam at least twice as
wide as joint to be caulked. Use polyethylene
sheet as bond breaker between sealant and
non-release type of back-up material.
VIII-13
L.
d. Samples and Colors - Submit to Owner for
selection and approval.
4. Application -
Polysulfide caulking shall be applied to a
clean, dry, surface free from grease, oil, wax
or other foreign matter that tends to destroy
or impair adhesion. Cleaning shall be in
accordance with instructions of the sealant
manufacturer.
Apply masking tape over light colored mate-
rials such as aluminum or concrete in contin-
uous strips in alignment with joint edge.
Remove tape immediately after joints have been
sealed and tooled as directed.
C. Prime surfaces with primer as recommended by
sealant manufacturer.
F Sealant manufacturer's current published
specifications regarding mixing, surface
preparation, priming, application life, and
application procedure are a part of this
specification the same as if bound herein.
Apply, tool and finish sealant as required.
Joints shall be backfilled to the required
depth with polyester polyurethane foam. The
joint depth shall be in accordance with
manufacturer's specification. When tooling
white or light colored sealant, use dry tool
or tooling solution recommended by sealant
manufacturer.
Clean adjacent surfaces free of sealant or
soiling resulting from this work as work
progresses. Use solvent or cleaning agent as
recommended by sealant manufacturer. All
finished work shall be left in a neat, clean
condition.
METAL DOORS, FRAMES
Scope - Furnish and install all hollow metal frames
and doors as shown on the Drawings and as specified
in -this section.
Materials Required - Frames shall be 16 gauge prime
painted steel, mitered corners reinforced for
hardware per SDI Standard 107, latest edition. All
corners welded at masonry frames, delivered to job
with spreader attached.
VIII-14
I-
Doors shall be 16 gauge steel, and meet the
requirement of SDI Type II, Style 1.
I- Louvers shall be metal louvers with insect screen,
except as otherwise specified..
I 3. Approved Manufacturer - Doors and frames shall be
supplied, as manufactured by Arnweld, Steelcraft,
- Republic Steel, or equal.
4. Execution -
I :a. Frames - Shall be furnished as specified:
Knocked down with mitered corners-having heavy
reinforcements and four integral tabs for
secure interlocking of jambs to head at each
I corner. Provide spreader bar where required
to insure alignment. Set up, with mitered
corners welded and ground smooth full length
of joints and spreader bar attached.
-Anchors to be provided as -per details, not
less than 3 anchors on each jamb to suit wall I .
condition, and floor angle clips for sill
anchorage.
-1 Frames to be mortised, drilled, tapped and
reinforced at the factory for installation of
finish hardware, in accordance with templates
I -.
- supplied by the Contractor for finish hard-
ware. Gauges of reinforcement shall be as
follows:
I -Hinge 3/16-inch steel -
Closer 12 gauge
- Lock 16 gauge
Strike 16 gauge-
- Jambs shall be constructed to set on finished
I . floor.
Provide rubber , silencers on all door frames;
two per door minimum.
Weatherstripping shall be flexible weather
seal interlocked into head and jamb by tab and
I .slot connection as manufactured by Reeve or,
- . shop applied weatherstripping - Type 306 as
- manufactured 'by "Pemco,"- or equal, installed
- by the door and frame manufacturer.
I'
I
I b. Doors - Seamless, full flush, of pan type
construction, unbroken face with all edges
sealed and ground smooth, and internal con-
struction per manufacturer's specifications.
Shall be cut, reinforced, drilled and tapped
for hardware supplied under finish hardware.
Provide Underwriters Labels as required by
door schedule.
Provide metal louvers where indicated.
5. Special Requirements -
Shop Drawings - Before proceeding with fabri- -
cation, submit six copies of shop drawings for
approval by Owner.
See door details for special conditions.
C. All doors aid frames having UL label require-
ments shall be of fire-rated construction. UL
labels shall be omitted from frames where
surrounding construction does not satisfy
label requirements, but shall be applied in
all other instances.
M. FINISH HARDWARE
Scope of Work - Work Included - Furnish all finish
hardware as shown on drawings or as specified
herein. Any items inadvertently omitted from these
specifications shall be furnished of a size, grade,
and type as shown for similar openings.
Schedule - Within 10-days following award of the
Contract, this supplier shall submit for Owner's
approval, copies of a full and complete schedule
and one complete set of manufacturers' catalogs
covering all items submitted.
Inspection & Guarantee - Upon completion, this
supplier shall inspect and adjust all hardware for
proper operation, and provide a certification -to
the Owner to this effect. A one-year written
guarantee covering replacement of any material
proven defective during this period shall also be
provided. This guarantee does not cover items
damaged due to abuse, faulty installation, or other
external causes.
VIII-16
I
Delivery & Marking - All material shall be deliv-
ered as required to the Contractor or to fabri-
cators as requested by him. All items shall be
delivered in manufacturer's original cartons,
marked to coincide with the approved finish hard-
ware schedule.
Fitting and Removal - After fitting, all hardware,
except hinges, shall be removed before painting.
I Hardware removed shall be replaced in original
carton with all screws, fasteners and brackets.
After painting, hardware shall be replaced and
I adjusted for proper operation.
Exit Doors- Exit doors shall be openable at all
I
: times from the inside without the use of a key.
Materials and Manufacturers -
I Floor Hinge - Rixson 27 Series; Equivalent:
Doromatic 2500 Series.
Butts - Hager 1279 and BB1279; Equivalent: Law- I it rence 4181 and BB4101; and, McKinney T2714 and
TA2714.
I Locks - Schiage G51PD MET, locks shall be Master-
keyed to match existing as directed by the Owner.
1 -- Closers - Norton 7500 Series.
Threshold and Door Seals - Pemko; Equivalent:
i
Builders Brass, and Reese.
Door Trim and Stops - Quality; Equivalent:
Builders Brass, and Baldwin.
I Schedule of Material to be Supplied - Each door to
receive.
1 1-1/2 pr Butts
1 Locks
I
1 Closer
1 Stop
1 Kickplate
1 Threshold
I 1 W/Strip
1 Floor Bolt for Inactive Leaf Only
I * * * END OF SECTION * * *
i
SECTION IX. PROTECTIVE COATINGS
I. A. SCOPE
I . This section covers surface preparation, furnishing, and
application of architectural paint and special protective
coatings, complete.
I It is the intent that all buried exterior concrete, submerged
concrete, exposed metal, and submerged metal surfaces be
painted, whether specifically mentioned or not, except as
I modified herein. Exposed exterior concrete surfaces will not
be painted unless specifically indicated hereinafter.
B. PROTECTIVE COATING SYSTEMS
Polyurethane Coating - Coat all interior concrete
surfaces of the
wet well and holding tank with 125 mil MDFT of a /100 percent solids elastomeric
polyurethane coating. Coating shall be Crandalon
as manufactured by Rendal Corporation
(714/855-1465), or approved equal. Apply coating
per manufacturer's recommendations. Test for
pin-holes and other imperfections and repair as
required. Coating shall. be properly bonded to
adjacent non-concrete surfaces (e.g. access hatch
frame) in accordance with coating manufacturer's
recommendations to provide a permanent watertight
joint.
Coal Tar Epoxy Coating - Coal tar epoxy coating
shall be System 46H-413 as manufactured by TNEMEC,
or approved equal. Apply coating in conformance
with manufacturer's recommendations to a thickness
of 14-20 mils MDFT. The following surfaces shall
receive this coating unless otherwise specified on
these drawings or unless the item has a
.
0 factory-applied coating that is suitable for the I, intended service, conditions, as approved by the
Engineer.
I a. All carbon steel, cast iron, or aluminum that
is buried or is subject to sewage immersion.
Sewage immersion areas are defined as the wet
I well, drain valve holding pit, and the holding
tank.
b. Aluminum that is in contact with a dissimilar
metal or is embedded in, or attached to,
concrete.
Hot-Mopped Asphalt - Coat all buried, exterior
concrete surfaces of the pump room, wet well and
holding tank with 32 mils of hot-mopped asphalt.
Hot-Dipped Galvanizing - Hot-dipped galvanizing
shall conform to the requirements of ASTM A123-84.
All components shall receive an average coating of
2.3 oz/square foot. Carbon steel items shall be
galvanized as indicated on the drawings on
otherwise specified in these Specifications.
Vinyl Coating - Coating the exposed surfaces of
pumps, motors, piping, valves, fittings, vent
pipes, drain lines, and all other carbon steel
items that are within the pump room, with the vinyl
system described below, or equal: -
- 1st coat: Tnemec System 33-1211; 1.5 to 2.5 MDFT
2nd coat: Tnemec System 53; 4.0 to 6.0 MDFT
I 3rd coat: Tnemec System 53; 1.5 to 2.5 MDFT
Color shall bea light green per Owner's approval.
I 6. Alkyd Enamel - Coat all carbon steel items located
above-grade that are not provided with a factory-
applied finish coating, with the alkyd enamel
I system described below, or equal:
1st coat: Tnemec Series 36-603; 2.0-3.5 mils MDFT
I .
-(primer for wood surfaces)
1st coat: Tnemec Series 10-99; 2.0-3.5 mils MDFT
(primer for metal surfaces)
2nd coat: Tnemec Series 2; 1.5-2.5 mils MDFT
I 3rd coat: Tnemec Series 2; 1.5-2.5 mils MDFT
Color shall be light biege per Owner's approval.
7. Galvanized Metal Conditioning - Galvanized steel
items that are specified or indicated to be
I painted, shall be conditioned prior to applying the
specified top coat, using one coat of a wash primer
@ 0.4 mil MDFT.
I 8. Interior Epoxy Lining For Valves, Steel Pipelines,
And Surge Tank - Line the interior of all valves
that are on sewage conveying pipelines, steel
I pipelines, and the interior of the surge tank with
Keysite 740 as manufactured by SOCO-CO Plastic
Coating Company (714/987-4753), or approved equal.
I 9. Polyethlene Lining For Ductile Iron Pipelines -
Line the interior of all ductile iron piping with a
40 mu (nominal) polyethylene lining per U.S.
II . Pipe's "Polylined" system,.or approved equal.
IX-2
Safety Yellow Coating - Guard posts shall be
painted with Rustoleurn No. 7448 Safety Yellow, or
approved equal.
Corrosion Protection Tape - Wrap buried black steel
pipe with Scotch Wrap No. 50 "All-Weather"
Corrosion Protection Tape, or approved equal.
Architectural Woodwork (Interior and Exterior
Coating) -
a. Surface Preparation - Wood surfaces to be
painted shall be cleaned of dirt, oil or other
foreign substances with mineral spirits,
scrapers, sandpaper or wire brushes. Finish
surfaces exposed to view shall, if necessary,
be made smooth by planning or sandpapering.
Mil work shall be sandpapered where necessary
and given a coat of the specified primer on
all sides before installation. Samll dry
seasoned kn9s shall be surface scraped, sand
papered and thoroughly cleaned, and shall be
given a thin coat of WP-578 Western Pine
Association Knot Selaer before application of
the priming coat. Large open, unseasoned
knots and all beds or streaks of pitch shall
be scrped off, or if the pitch is still soft,
it shall be removed with mineral spirits or
turpentine, and the resinous area shall be
thinly •coated with Knot Sealer. After
priming, all holes and imperfections shall be
filled with putty or plastic wood (colored to
match the finish coat), allowed to dry and
sandpapered smooth. Painting of interior wood
surfaces shall proceed insofar as practicable,
only after masonry work has dried. Existing
wood shall be cleaned of all loose or flaking
paint and sandpapered as required.
b. Coating (Dupont Alternate) - Interior prime
coat shall be Dupont 853 Dulux Ovalite Enamel
Undercoat, brush-applied. Exterior prmie coat
shall be Dupont No. 49 Blister Resistant Wood
Primer. Two (2) finish ocats shall be Dupont
Duco Semi-Gloss Enamel, brush-applied.
C. Coating (National Lead Alternate) - Interior
prime coat shall be National Lead 30P151
brush-applied. Exterior prime coat shall be
National Lead 010, brush-applied. Two (2)
finish coats shall be National Lead 1200
Series, brush-applied.
IX-3
I
C. FUEL SYSTEM PIPE LABEL AND COLOR SCHEDULE
I The fuel oil tanks and associated piping shall be painted
with the following colors:
I
Item Color Color Bands Pipe Label
Fuel Oil Federal Safety Federal Safety Fuel Oil
I
Supply Orange Red Supply
Fuel Oil Federal Safety Ivory Fuel Oil
Return Orange Return
I Fuel Tank*
Federal Safety
Orange
I *(including structural steel support frame)
C. WORKMANSHIP
I 1. General - Apply all coatings in strict accordance
with the paint manufacturer's recommendations, as
approved by the Engineer. Sufficient time shall be I allowed between coats to assure thorough drying of
previously applied paint.
I Units to be bolted together and to structures shall
be painted prior to assembly or installation.
I -- 2. Shop Primed Surfaces - Areas of chipped, peeled, or
abraded primer shall be hand or power sanded
feathering the edges. The areas shall then be spot
U
.primed with the specified or otherwise required
primer. Prior to application of finish coats, shop
primed surfaces shall be cleaned free of all dirt,
oil and grease, and a mist coat, 1.0 mil dry film
I thickness, of the specified primer applied,
complete. Holdback areas for welding shall be
prepared and primed, after welding, as required for
I .the specified paint system.
Manufacturer Applied Paint Systems - Abraded areas
I
on factory finished items shall be repaired in
strict accordance with the manufacturer's
directions. Repaired areas shall be carefully
I
blended into the original finish. .
Film Thickness - Coverage is listed as total
minimum dry film thickness in mils (MDFT). The
I
.. number of coats is the minimum required
irrespective of the coating thickness. Additional
coats may be required to obtain the minimum
IX-4
required paint thickness, depending on method of
application, differences in manufacturers' pro-
ducts, and atmospheric conditions. Maximum film
build per coat shall not exceed the coating manu-
facturer's recommendations.
5. Warranty - The Contractor shall warrant to the
Owner and guarantee the work under this section
against defective workmanship and materials for a
period of 1 year commencing on date of final
acceptance of the work.
* * * END OF SECTION * * *
IX-5
I
SECTION X. REINFORCED CAST-IN-PLACE CONCRETE
I A. GENERAL
Concrete work shall conform to the requirements specified I :
herein and to the applicable requirements of Section .201 and
303 of the Standard. Specifications For Public Works Construc-
tion, 1985 Edition; hereinafter referred to as the Standard
Specifications. . .
B. MIX REQUIREMENTS
I . 1. Reinforced Concrete - Unless shown otherwise on the
drawings or specified otherwise herein, concrete
•
I
. shall be of the following classes and shall be used -
as follows:
560-B-3000 concrete:. For concrete walls and
I -.
columns 8-inches and thicker
7 and concrete slabs 5-inches
and thicker.
I . Maximum slump = 4".
l 560-C-3000 concrete: . For concrete walls and
I
columns less than 8-inches
thick and concrete slabs less
- than 5 inches thick.
Maximum slump = 4".
I C. MATERIALS
Cement - All cement shall be. Type II, low alkali
I
1.
Portland Cement conforming to ASTM C-iSO.
2. Reinforcing Steel - Reinforcing steel shall conform
I . to ASTM A-615 in accordance with Section 201-2 and
Sections 303-1.7.1 through 303-1.7.3 of the
Standard Specifications.
I All reinforcing bars 3/8" and larger shall be
deformed bars of new billet steel conforming to
I .
ASTM Specification A-615 Grade 60.
'of Reinforcing bars shall have 2" concrete cover
except as otherwise noted on the plans or where
I .concrete is poured against soil without forms, the
cover shall be 3". Ties shall have 1-1/2" cover
minimum.
I All hooks and bends shall conform to the building
code requirements for reinforced concrete (ACI
318-77) unless detailed otherwise.
I .
X-1
I
All bars shall be lapped 45 diameters for Grade 60
reinforcing but not less than 12" unless detailed
I otherwise.
All dowels shall have the same size and spacing as
that of the reinforcement to which they are spliced I and shall have a minimum lap per paragraph 4.2.4
unless shown otherwise.
I All reinforcing shall be continuous across
construction joints unless detailed otherwise.
I All concrete construction shall comply with the
applicable requirements of the building code
requirements for reinforced concrete (ACI 318-77)
I Dimensions to bars are to bar centerlines unless
noted otherwise.
Admixtures - All reinforced concrete shall contain
an air entraining agent conforming to Section
201-1.2.4 of the Standard -Specifications.
Curing Compound - Curing compound shall conform to
Section 201-4 of the Standard Specifications.
Curing compound shall not prevent future bond of
I floor covering, paint or penetration of floor
hardener.
I 5. Clear Liquid Hardener - Clear liquid hardener shall
be Sonneborn "Lapidolith", "Grace Hornlith" or
equal, applied in accordance with printed
I
directions of manufacturer.
D. SAMPLING AND TESTING OF AGGREGATES
I Prior to use in the work, Contractor shall submit test
results indicating that aggregate from a proposed source
meets the requirements of these specifications. A report
I shall be included with each concrete mix design submittal
showing that aggregate, intended for use in the concrete, is
potentially non-reactive when tested in accordance with. ASTM
I
C289. Tests shall be performed by a reputable independent
testing laboratory and the cost of testing shall be borne by
the Contractor.
1 .If the Engineer deems that additional testing of aggregate is
necessary, he may select samples from any of the aggregate to
be used on the job and have same tested by any recognized
I laboratory of his choice. Such material shall not be used in
the work until test reports are available. If in such tests
the material fails to meet the specified requirements, the
I;
aggregate will be rejected and the expense of testing shall
be borne by the Contractor. If such tests show the aggregate
to be satisfactory, the cost of additional testing will be
borne by the OWNER.
E. MIXING, PLACEMENT, AND CONSOLIDATION
Mixing, placement, and consolidation of concrete shall be in
accordance with applicable requirements of Section 201 and
303 of the Standard Specifications and as specified herein.
The Contractor shall obtain rough grading approval from the
Engineer prior to placing any concrete.
F. PROPORTIONING
Basis - Concrete materials shall be proportioned in
accordance with Section 201-1.3 of the Standard
Specifications so as to produce a workable mixture
in which the water content will not exceed the
maximum specified.
Control - Mix proportions shall be established to
meet specified requirements by the same laboratory
that is employed for testing aggregates and the
costs for such mix design shall be borne by the
Contractor.
The exact proportions of all materials entering
into the concrete shall be as established by
laboratory mix design and shall be changed only as
directed by the Engineer or laboratory when
necessary to obtain specified strength or desired
density, uniformity, and workability.
G. STRENGTH TESTS
I Strength tests shall be performed on the concrete as
specified in Section 201-1.1.4 of the Standard Specific-
ations. All costs for testing of cylinders by an approved
I independent accredited testing laboratory shall be borne by
the Contractor.
If any of the 28-days tests fail to meet the specified I :minimum ultimate compressive strength, the concrete repre-
sented by the failed tests will be assumed to be defective
and the Engineer may direct that cores be taken from the ' deficient areas in accordance with ASTM C42. If the compres-
sive strength of the concrete cores fails to meet the
strength test criteria for concrete cores, the concrete will
I be considered defective and shall be removed or adequately
strengthened in a manner acceptable to the Engineer, all at
not cost to the OWNER. Cost of coring, testing of cores and
all required repairing pertaining thereto shall be paid by
I the Contractor.
I
fl
H. CONSTRUCTION JOINTS
I 1. General - Construction joints shall be in
accordance with Section 303-1.8.6 of the
Standard Specifications. Construction and other
joints shall be placed where indicated on the I
.
drawings. Construction joints, other than those
shown on the drawings may be used only with the
I
permission of the Engineer.
',Waterstops - Waterstops shall be provided at
construction joints where indicated on the
drawings.
Waterstops shall be extruded from an
elastomeric polyvinyichioride compound containing
the necessary plasticizers, resins, . stabilizers,
and
other materials necessary to
requirements of these specifications
meet the
and shall
comply with the current . Corps of Engineers
Specification CRD-0572. No reclaimed or scrap
materials shall be used.
The waterstops shall be 6-inches by . 3/8-inch,
I non-split, serrated type without center bulb. The
waterstops shall be "Elastomer PVC Waterstop" Type
SS-7 Flat, as manufactured by Stratford Materials
- Corporation; "Servicised/Durajoint", Type No. 14,
I as manufactured by Grace Construction Products;
"Kirkhill Vinyl Waterstop" No. KP-1479-9F, as
manufactured by Kirkhill Rubber Co., or equal.
I Waterstops shall be spliced at joints and intersec-
tions in accordance with the manufacturer's in-
structions,. and the details shown on the drawing,
using a thermostatically controlled heating iron.
Completed splices shall develop a minimum tensile
strength of 600 psi. Field samples of fabricated
I fittings may be selected by the Engineer for
testing by a laboratory at the Contractor's
expense.
1 Epoxy Binder - When indicated on the drawings, an
epoxy binder shall be applied to the concrete
I
surfaces of construction joints.
shall be Edoco Epoxy Binder BW, Code
Epoxy binder
No. 2104, as
manufactured by Edoco Technical Products, Inc.,
Long Beach, California; Sikastix 370, Sikadur I Hi-Mod adhesive as manufactured by Sika Chemical
Corp., Lyndhurst, New Jersey, or equal. Applica-
tion shall be in strict conformance with the
I
manufacturer's recommendations. Concrete surfaces
shall be sandblasted prior to application of the
epoxy binder.
I'
I
General - Forms and removal of forms shall be in
accordance with Section 303-1.3 and Section 303-1.4
of the Standard Specifications, and as specified
herein. Prior to setting reinforcing steel for
walls, one side ofthe forms shall be set and
braced to line and grade. The reinforcing steel
shall then be set accurately and secured firmly in
place.
Tolerances of Forms - Form work shall be con-
structed to insure that concrete surfaces will
conform to the following tolerances:
Variation from Plumb - In the lines and -
surfaces of columns, piers and walls, and in
arrises:
In 10 feet 1/4 inch
In any story or
20 ft. maximum 3/8 inch
In 40 feet or more 3/4 inch
For exposed corner columns, control joint
grooves, and other conspicuous lines:
In any bay or 20 feet
maximum 1/4 inch
In 40 feet or more 1/2 inch
Variation from Level or Grades Indicated - In
floors, ceiling, beam soffits, and in arrises:
In 10 feet 1/4 inch
In any bay or
20 feet maximum 3/8 inch
In 40 feet or more 3/4 inch
For exposed lintels, sills, parapets,
horizontal grooves, and other conspicuous
lines:
In any bay or 20 feet
maximum 1/4 inch
In 40 feet or more 1/2 inch
C. Variation of Linear Building Lines - From
established position in plan and related
position of columns, walls and partitions:
In any bay or
20 feet maximum 1/2 inch
In 40 feet or more 1/2 inch
x-5
I I. FORMS
I . 1.
I.
I
1
2
I
I ,
I
I
I ,
I
I
I:
I .
I ,.
I
I'.
I
I;
d. Variation in Cross-Sectional Dimensions - Of
columns and beams and in the thickness of
I slabs and walls, except precast:
Minus 1/4 inch
I
Plus 1/4 inch
e'. Variation in reinforcing steel clearance -
Minus 0 inch Plus 1/4 inch
I J. FINISH OF FORMED SURFACES
General - The classes of surface finish described
in Section 303-1.9 of the Standard Specifications,
I
.
I shall be applied to the various parts of concrete
structures as specified therein and below.
Ordinary Surface Finish - Ordinary surface finish
shall be the fin-zrl finish for vertical and soffit
surfaces of chnne1s, tanks, wet wells, inlet
structures, shafts, and similar structures which
are not exposed to view, and surfaces which are to
. receive protective coatings as specified in the
I is
Paint Section, except where a higher class finish
specified herein.
Class 1 Surface Finish - Class 1 surface finish
shall conform to Section 303-1.9.3 of the Standard I ..
Specifications and shall be a preparatory finish
for surfaces designated herein to receive the Class
I
2 surface finish.
Class 2 Surface Finish - Class 2 surface finish
shall conform to Section 303-1.9.4 of the
I . Standard Specifications and shall be the final
finish for the following surfaces which, in
general, includes all concrete exposed to view.
This work shall be completed prior to installation
of Miscellaneous Metals, equipment, ducts, fixtures
and piping which are to be fastened to the concrete
surface.
Exposed vertical and soffit surfaces above
finished ground and to at least one foot below
I finished ground.
Exposed vertical surfaces of columns and
I
equipment pedestals.
C. Exposed surfaces of retaining walls above
finished ground and to 1' below finished
I ground.
I
X-6
Exposed interior vertical surfaces above
normal water level and to at least one foot
below normal water level in channels, tanks,
and forebay and similar open structures which
are not covered.-
Exposed interior wall and soffit surfaces of
drywells, stairwells, pumping plant drywells,
galleries and similar structures.
K. FINISH OF FLATWORK
.
1. Finishing - Flatwork finish shall be in accordance I with Section 303-1.9 'of the Standard Specifications
and as specified herein. Flatwork finish shall be
• I
,the final finish for horizontal surfaces of slabs -
and walkways, except where shown otherwise on the
drawings.
I .
• A smooth troweled cement finish shall be given to
- all interior floors- not scheduled to have a
• separate finish and to floors which are to receive
resilient flooring. A "broom" finish shall be
• I . applied to all structure walkways and all
sidewalks.
1 Liquid Hardener - A clear non-slip liquid hardener
shall be applied to interior floors in the Engine
Generator Building and the Pump Room. Liquid
hardener shall be applied in strict accordance with
the manufacturer's specifications, however, not
less than 2 coats shall be applied. Floors shall
I be free of oil and stains and shall be broom clean
when the hardener is applied.
I Tolerance - Finish work shall contact a 10-foot
I . • straight edge in any direction with 1/8-inch
maximum tolerance.
L. STAIRWAY NON-SLIP FINISH
Concrete stairways., landings and steps shall receive a
I
t non-slip
direction
finish by applying a broom finish of a texture and
as approved by the Engineer; finish at the proper
'times after placing and troweling operation.
I M. CURING
•
Curing of concrete shall be in accordance with Section
303-1.10 of the Standard Specifications.
I
N. GROUT AND DRY PACK
Portland Cement Grout and Drypack - Grout shall be
composed of 1 part Portland cement and not more
than 3-1/2 parts of sand by volume with sufficient
water for placing. Dry pack shall be composed of 1
part Portland cement and not more than 2-1/2 parts
of sand with sufficient water for hydration of
cement.
Non-Shrink Grout - Where non-shrink grout is
indicated on the drawings, it shall be suitable for
the purpose intended and shall be approved by the
Engineer. The grout shall be mixed, handled, and
placed in accordance with the manufacturer's
instructions.
0. SETTING AND BUILDING-IN WORK
I Unless otherwise specified under other sections of these
specifications, the Contractor shall set and build-in
materials which are required for concrete construction. This
includes structural anchors, anchor slots, bolts, plates, I brackets, etc., which are specified in other sections of the
Specifications, but which are to be embedded in. concrete.
The Contractor shall become familiar with and be responsible I for work which is to be set and built-in under this section,
as well as that which will be set by other trades and
built-in under this section.
I The Contractor shall see that work specified to be set under
other sections of the Specifications is secured properly for
I
concrete placing operations, and shall be responsible for
maintaining the proper position of work after having been
set.
I .No pipes shall . be embedded in structural concrete except
where specifically detailed. Conduit one inch or less in
diameter may be embedded if located within the middle half of
I
the slab.
After having been placed, concrete shall not be cut to place
work left out through oversight, except by approval of the
I
P. PROVISIONS AND CONNECTIONS FOR OTHERS
I The Contractor shall guard against delay by notifying
subcontractors and the Engineer well in advance of the time
I
when their work or equipment is to be furnished or installed.
He shall coordinate his work with work specified under other
divisions or sections of the Specifications, affording every
I
reasonable facility for the introduction, storage, and
installation of all necessary materials and equipment into
the work.
The Contractor shall install sleeves or other devices
necessary to form openings for the passage of pipes and
conduits. Boring will not be allowed except as approved by
the Engineer. Sleeves shall be removed prior to the
Contractor grouting the void between the sleeve opening and
the conduit or pipe.
The Contractor shall refer to piping, electrical and
equipment drawings for complete information for all inserts,
openings, recesses and corbels required for piping,
electrical and equipment.
P. WEATHER CONDITIONS AND PROTECTION
Concrete placing and protection shall conform to Section
303-1.8..7 of the Standard Specifications. Concrete shall not
be placed during inclement yeather without the prior approval
of the Engineer.
* * * END OF SECTION * * *
X-9
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~ I SECTION XI. STRUCTURAL STEEL AND
MISCELLANEOUS METAL WORK
I I A. SCOPE
The Contractor shall furnish all labor, equipment and
materials and perform all operations in connection with the
fabrication, assembly, adjustment and testing of structural
steel and miscellaneous metal work as indicated on the
Drawings or as covered by these Specifications. Shop
drawings showing the details of structural steel and metal
work shall be submitted for approval prior to fabrication.
B. STRUCTURAL STEEL
ASTM - Structural steel shall conform to ASTM A36.
Fabrication - Fabrication and workmanship shall be
done in accordance with AISC "Specifications for
the Design, Fabrication and Erection of Structural
Steel for Buildings". Welding shall conform to
American Welding Society Standards "Code for Arc
Welding in Building Construction," Section 4,
Workmanship.
Reinforcing rods to be welded shall be preheated to
a minimum of 212°F, a distance of 3 inches each
side of the weld and then welded, using a low
hydrogen type welding rod.
Galvanizing - Where specified, fabricated struc-
tural steel items such as 'brackets, hangers, door
protectors, housings and similar small items shall
be galvanized after fabrication. Steel work to be
hot-dipped galvanized shall be zinc-coated in
conformity with one or the other of the following
standard specifications, as applicable, ASTM A123,
A384, A385, and A386. The minimum weight of
coating shall be 2.0 ounces per square surface
area.
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C. GRATINGS
Gratings shall be of welded steel
otherwise called out on the drawings,
openings as indicated on the Drawings and
galvanized after fabrication.
construction unless
fabricated to fit
shall be hot-dipped
XI-1
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Gratings shall be designed to withstand a minimum live load
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of 100 lbs. per square foot. Gratings shall have serrated
surfaces and shall be of standard panel widths insofar as
possible. Gratings shall be attached to the support member
by means of anchor and clamp assemblies and shall be approved
I . by the Owner. Maximum weight of each grating panel shall be
limited to 80 lbs. per panel.
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,D. STEEL LADDER
Steel ladders shall be fabricated according to the details as
shown on the Drawings. All ladders subject to immersion
I . shall be of Type 18-8 stainless steel construction.
Otherwise, they shall be of galvanized steel construction.
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E. HANDRAILS
The handrails shall be of all' aluminum alloy 6063-T6
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generally round in shape and shall have a minimum diameter of
one and one-half inch (1-1/2"). The railing shall meet all
local and state code requirements including ' CAL OSHA
requirements. Post spacing shall be maximum of 5-foot.
I . Copies of certified test data shall be submitted as shop
drawings to substantiate conformance with code requirements.
Fasteners shall be stainless steel. The aluminum finish
I shall be an anodic coating natural anodize AA-M12 C22A31 as
designated by the Aluminum Association. Fittings shall be of
the slip-on type made of aluminum as manufactured by
I Holiarender, R.B. Wagner, Inc., or. equal. The aluminum
railing shall be as manufactured by Craneveyor Corp.,
Aluminum Tube Railings, Inc. or equal.
I F. MANHOLE ACCESS THROUGH ROOF SLABS
I frames
Manhole access shall be provided by 24" diameter manhole
with locking covers that conform-to City of San Diego
Standard Drawings M-1 and M-4. Manhole assembly shall be
suitable for HS-20 traffic loads.
I 'Manhole fiames and covers shall be set so the top of the
covers are flush with the surface of the adjacent concrete
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surfaces, unless otherwise shown or approved.
G. MANHOLE STEPS
I Manhole steps shall be constructed of a copolymer polypropy-
lene plastic encapsulating a continuous steel rod. The steps
shall meet the requirements of ASTM C478, paragraph 11 and
I 'ASTM 2146-68 under Type II, Grade 16906. The steel rod shall
be a 1/2 inch diameter deformed reinforcing rod meeting the
requirements of ASMT A-615, Grade 60.
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XI-2
Manhole steps shall be Model PS-2-PFS as manufactured by M.A.
Industries, In., or approved equal.
H. ROOF SCUTTLES
Roof scuttles shall have galvanized and painted (per Section
IX) steel covers, and shall be. of double-leaf design.
Hardware shall be stainless steel. Cover shall have compres-
sion spring operators, two point locking mechanism and a
padlock hasp.
Roof scuttle dimensions shall be:
4' (width) x 12' (length) for access to the pump
room stairway.
5' (width) x 10' (length) for direct access over
the skid-mounted pumping system.
Roof scuttles shall be Bilco. Model "D", or equal.
I. ANCHORAGE SYSTEMS TO CONCRETE
General - All anchor bolts and associated nuts and
washers subject to sewage immersion or sewage
atmosphere (such as in the Pump Room) shall be of
Type 18-8 stainless steel. All other anchor bolts
(including nuts and washers) shall be of carbon
construction and zinc-plated in accordance with
ASTM B633, Section 2, Type III.
Contractor shall provide all anchor bolts as shown
or are otherwise required for a complete
installation of all equipment. Minimum anchor
bolt size shall be 3/8" diameter X 3" long,
unless otherwise specified.
Expansion Anchors - Expansion Anchors shall be Kwik
Bolt or Stainless Steel Quick Bolt as
manufacturered by Hilti Fastening Systems, or
approved equal.
Adhesive Anchors - Adhesive anchors shall be used
for anchoring metal components within the wet well
or holding tank. Adhesive anchors shall be
Parabond capsule anchors with 316 stainless steel
stud, nuts, and washers, as manufacturered by Molly
Division, 504 Mt. Laurel Avenue, Temple, PA 19560;
heavy duty adhesive anchor with HBP adhesive
cartridge and 316 stainless steel anchor rod
assembly as manufactured by Hilti, Inc., P.O. Box
45400, Tulsa, OK 74145, or equal..
XI-3
4. Adjustable Anchor Studs - Anchor Studs for securing
the engine generator frame, above-grade fuel tank,
I and force main surge tank . to their concrete
foundations shall be adjustable anchors such as
DECO Heavy Duty Anchors, or equal. Minimum size
shall be 1" diameter x 12" long for the engine I .
generator set and 1/2" diameter x 9" length for the
other equipment.
I J. VALVE BOX AND COVER
The Contractor shall provide a valve box and cover for all
I buried valves, conforming to City of San Diego Standard
Drawing SDW-107. The valve box cover shall indicate that the
valve stem operates a sewer valve.
I K. CAST IRON FLOOR DRAIN FOR VALVE PIT
I by
Cast iron floor drain shall be Model R-4953-A as manfuactured
Neenah Foundry Company, or equal.
PUMP ROOM BLOWER DUCT4ORK
Exposed duct and duct transitions between the pipe assemblies.
and the flexible connector shall be constructed from minimum
No. 12-gage. galvanized steel. sheets in accordance with ASTM
designation: A 526.
LOUVERS
Louvers shall be 4-inch wide extruded aluminum standard
mullion louvers. Frame and blades to be 6063-T52 Alloy,
0.125 inch thick. Heads, sills and jambs to be one piece
structural members and shall have integral caulking slot and
retaining bead. Slidable interlocked mullions to *have
provisions for expansion and contraction. All fastenings to
be stainless steel. Structural supports to be designed by
the louver manufacturer to carry a wind load of not less than
20 psf. The engine fan louver shall be designed to withstand
the force of the engine fan.
Louvers shall be furnished with 3/4-inch mesh, 0.063"
diameter wire intercrimp bird screen secured within an
extruded aluminum frame. Louver with attached bird screen
shall be in accordance with the generator engine
manufacturer's requirements. In no case shall the
unrestricted free air opening be less than 18 square feet.
Maximum air restriction across the radiator shall be 0.5
inches water. Louver shall -be Model 4157 as supplied by ACS
Plus, San Marcos, California or approved equal.
XI-4
Louver finish shall consist of two coats minimum and shall be
finished in a light biege color to match the doors and
Generator Building's adobe-colored slump blocks. The two
coat system shall consist of baked-on primer and fluorocarbon
polymeric finish coat and shall be construction specialities
Kynar 500 finish or approved equal.
* * * END OF SECTION * * *
XI-5
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SECTION XII. MASONRY CONSTRUCTION
SCOPE
The Contractor shall furnish all labor, materials, and
equipment necessary to complete the execution of concrete
masonry construction as shown on the Drawings and specified
in these Specifications.
MATERIALS
1. Concrete Blocks - Concrete blocks shall be hr11rmi
load bearing concrete units conforming to the
latest ASTM Designation C-90, Grade N-i. Blocks
shall be colored, 8-inch by 8-inch by 16-inches
standard block. Color of block shall be selected
by the Owner.
Portland Cement. - :As specified under Section 4.3,
"Concrete Construttion," except that cement shall
be Type I and II Low Alkali Portland Cement.
Reinforcing Steel - As specified under Section 4.3,
"Concrete Construction."
Sand for Mortar - Fine granular material composed
of hard, strong, durable mineral particles which
are free of injurious amounts of saline, alkaline,
organic, or other deleterious substances and of a
maximum 3 percent by weight. Mortar sand shall
conform to the latest ASTM Designation C-144.
Sand for Grout - Sand for grout shall conform to
ASTM Designation C-404.
Water - Water shall be free from deleterious
quantities of acid, alkalis, and organic material.
Lime -. Hydrated lime which conforms to ASTM
Designation C-207, Type S.
Mortar for Masonry - Cement mortar shall be
composed of one part Portland cement, from 1/4 part
to 1/2 part line putty or hydrated lime, damp loose
sand not less than 2-1/4. and not more than three
times the sum of the volumes of the cement and lime
used, and shall conform to ASTM Designation C-270.
Admixture - Admixture shall not be used unless
formally submitted to and approved by the Owner.
Admixture shall be used only in accordance with the
manufacturer's instructions.
XII-'
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10. Grout - Grout shall be composed of one part
Portland cement to which shall be added Suconem
Grout Aid No. 2, and two to three parts sand, by
volume. The mixing water shall be sufficient to
produce pouring consistency without bleeding or
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segregation of the ingredients.
C. SAMPLE AND CERTIFICATION
I The following shall be submitted to the Owner for review:
Samples - Furnish two blocks that are typical of
I the texture of each block to be furnish.
Certificates - The Contractor shall furnish
.certificates in duplicate prior to delivery of the
I. certified materials to the project site.
Certificates shall be signed by an authorized
officer of the manufacturing company and shall
I contain the name of the Contractor, the project
location, quantities, and dates of shipment to
which the certificates apply. Concrete masonry
• units shall be certified for compliance with all
specification requirements.
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, D. EXECUTION
Construction of reinforced hollow unit masonry shall conform
to . the applicable requirements of Chapter 24, Uniform
I Building Code, latest edition.
1. Mixing - All materials for mortar and grout shall
be accurately measured in suitable calibrated I devices. Shovel measurements will not be
acceptable. One sack of cement shall be considered
as one cubic foot. Each batch of mortar or grout
I shall be mixed for a period of at least two minutes
or longer in a mechanical mixer having not less
than one sack capacity. All mortar or grout shall
be used within 30 minutes after mixing. No I .
retempering will be permitted. No split sack
batches will be permitted.
I 2. Sandblasting - Prior to laying start course, clean
and roughen top of concrete foundation wall by
throughly sandblasting for removal of laitance,
I . etc. Protect all adjoining construction as neces-
sary.
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3. Reinforced Hollow Unit Masonry - Concrete block
shall be laid in running bond with 3/8-inch thick
(minimum) full mortar bed on all face shells. All
head joints shall be solidly filled. Units shall
be shoved tightly so that the mortar bonds well to
both blocks. Furrowing of the mortar will not be I ..
permitted. Intersecting masonry walls and
partitions shall, be bonded by overlapping units in
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alternate course except as indicated otherwise on
Drawings. All reinforced hollow unit masonry shall
be built to preserve the unobstructed vertical
continuity of the cells to be filled. The vertical
alignment shall be sufficient to maintain a clear,
unobstructed vertical flue measuring not less than
three inches by three inches.
I 4. Cutting and Patching - Cutting and patching of
masonry shall be performed by masonry mechanics.
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. Cut required shapes of exposed units by mechanical
means. Breaking with 'hammers or trowels is not
acceptable. Whe wiring is concealed in exposed
masonry, to avoid excessive cutting, the bottom of
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the outlet box shall be located at the horizontal
mortar joint nearest the dimension shown on the
Drawings or as specified. Manufactured concrete
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block shapes shall, be used to provide for all
windows, doors, bond beams, lintels, columns, etc.,
with a minimum of block cutting.
I ' 5. Bolts, Anchors, Etc. - Incorporate into the masonry
all bolts, anchors, metal attachments, nailing
blocks, inserts, metal door jambs, etc. The
I Contractor shall coordinate with the Owner for
openings . for special equipment not provided or
installed under this contract.
I 6. Steel Reinforcement - Steel reinforcement shall be
straight except for bends at all corners
intersections and as detailed on the Drawings.
I Vertical reinforcement shall be fixed in the
position shown on the Drawings, and shall be braced
to prevent swaying during construction. The
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vertical steel shall be placed prior, to laying
wall. Keep all reinforcement 1/2-inch clear
(minimum) of all surfaces to permit the grout to
fully surround the reinforcement. All cells
I containing reinforcement shall be filled with
grout. All grout shall be consolidated at time of
pouring by puddling or vibrating. Reinforcing
steel shall he lapped thirty bar diameters minimum
when spliced. When a foundation dowel does not
line with a vertical, it shall not be sloped more
than one horizontal in six vertical.
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Dowels shall be grouted into a core in vertical
alignment even though it is in an adjacent cell to
the vertical wall reinforcing.
7. Maximum Height of Pour - The maximum height of any
. grout pour shall be 4 feet.
Construction Joints - When grouting is stopped for
a period of one hour or longer, horizontal construc-
tion joints shall be formed by the grout pour 1-1/2
inches minimum below the top of the uppermost unit.
Raking shall be held to a minimum. No toothing
shall be allowed.
Cleanouts - Cleanout openings shall be provided at
the bottoms of all cells to be filled at each lift
or pour of grout when such lift or pour of grout is
in excess of 4 feet in height. Any overhanging
mortar or other obstruction or debris, shall be
removed from
the.. insides of such cells. The
cleanouts shall ,-15e sealed after inspection and
before grouting.
I 10. Unfinished Work and Protection - Cover tops of wall
with waterproof material securely held in place.
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, Provide protective covering during inclement
weather at the suspension of any masonry work.
Similarly protect all partially completed walls.
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'-11.' Mortar Joints - Mortar Joints shall be straight,
clean and uniform in thickness. When tooling is
required herein or on the Drawings, it shall be
done when the mortar is partially set but still I sufficiently plastic to bond. All tooling shall be
done with a tool that compacts the mortar, pressing
the excess mortar out of the joint rather than
I dragging it out. When raking is required, the
joints shall be raked out 3/8-inch deep, then
tooled with a flat pointing tool, then brushed with
I a nonmetallic brush.
Cleaning - After completion of work, remove all
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defacements by an approved sandblasting of the
entire surface followed by brushing, wetting and
repointing of defective joints 'as required. San
blasting shall leave a clear, first class
I appearance over entire masonry surface.
Clean-Up - At the' completion of all masonry work,
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any exposed metal members adjacent to the masonry
shall be sponged off and left undamaged. All
scaffolding and equipment used in the work shall be
removed, and all debris, refuse, and surplus
I material removed from the site.
14. Cold Weather Requirements - Unless .adequate
equipment is provided for maintaining a
temperature of between 50°F and 80°F during the 24
hour curing period, no masonry unit shall, be laid
when the temperature of the outside air is below
40°F.
* * * END OF SECTION * * *
XII-5