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City of Carlsbad
1635 Faraday Ave , Carlsbad, CA 92008
760-602-271T. / 2718 / 2719
Fax 760-602-8558
Building Permit Application
Plan Check No.
Est. Value ( cf
Plan Ck. Deposit
JOBADDRESS
CT/P(H)JECT# LOT #x». ,___,_. PHASE # # OF UNITS # BEDROOMSM^iii \0^^
f*5 jft ff ^)tf^ •»• 1 LXI / f\^~ ^?:fl"7^ I MU P"l
DESCRIPTION OF WORK Include Square Feet of Affected Area(s)
t}Rl\)C-OJjQLL» - »20"
sAsT triDs i»ALL~ "38Z
EXISTING USE PROPOSED USE GARAGE (SF)
CONTACT NAME (If Different fog Applicant)<> BOS tiOKUr
ADDRESS , . ^^
431?' S^EA '^f<,\£l4T Fc/^C£
CITY STATE Z.IPCARUBAO <zA VZ038
™ZO' 7^^»^ 009 S % - 7 £6-C)0%
' S^A B^fiHTT OR SO KUF ^ AP&LPtilA » Xlef
PROPERTY OWNER NAME ^ J^^. ^yi r, V-
ADDRtls
3i*560 (JD!/UD^^/2- RO/4D
CITY STATEA ZIP
PH°N7^ 0^12$ -9 ?3^ FAX
EMAIL
ARCH/DESIGNER NAME & ADDRESS STATE LIC #
SUITE#/SPACE#/UNIT# APN , 1'Or\! . •?/ "7 - I /^Ob Lio Cf I]
# BATHROOMS TENANT BUSINESS NAME CONSTR TYPE OCC GROUP
'
PATIOS (SF) DECKS (SF) FIREPLACE AIR CONDITIONING FIRE SPRINKLERS
YES d # NO D YES D NO D YES O NO D
APPM§OBE SOK^^
ADDRESS _^32^ SZA eft^vrr i^Mcs:
CITY STATE ZIP
PHONE FAX
EMAIL
CONTRACTOR BUS NAME
ADDRESS
CITY STATE ZIP
PHONE FAX
EMAIL
STATE LIC # CLASS CITY BUS LIC#
(Sec. 70315 Business and Professions Code Any City or County which requires a permit to construct, alter, improve, demolish or repair any structure, prior to its issuance, also requires the applicant for such permit to Me a signed statement that he islicensed pursuant to the provisions of the Contractor's License Law {Chapter 9 commending with Section 7000 of Division s of the Business and Professions Code) or that he n exempt therefrom and the basis for the alleged exemption Any violation ofSection 70315 by any applicant for a permit subjects the applicant to a civil penalty of not more than five hundred dollars {$500})
Workers' Compensation Declaration / hereby affirm under penalty of perjury one of the following declarations
n I have and will maintain a certificate of consent to self insure for workers compensation as provided by Section 3700 of the Labor Code for the performance of the work for which this permit is issued
G I have and will maintain workers' compensation, as required by Section 3700 of the Labor Code, for the performance of the work for which this permit is issued My workers' compensation insurance carrier and policy
number are Insurance Co _ Policy No _ Expiration Date __
This section need not be completed if the permit is for one hundred dollars ($100) or less
O Certificate of Exemption I certify that in the performance of the work for which this permit is issued I shall not employ any person in any manner so as to become subject to the Workers' Compensation Laws of
California WARNING Failure to secure workers' compensation coverage is unlawful, and shall subject an employer to criminal penalties and civil fines up to one hundred thousand dollars (&100.000), in
addition to the cost of compensation, damages as provided for in Section 3706 of the Labor code, interest and attorney's fees
CONTRACTOR SIGNATURE DATE
/ hereby affirm that I am exempt from Contractor s License Law for the following reason
O I as owner of the property or my employees with wages as their sole compensation will do the work and the structure is not intended or offered for sale (Sec 7044 Business and Professions Code The Contractor's
License Law does not apply to an owner of properly who builds or improves thereon and who does such work himself or through his own employees, provided that such improvements are not intended or offered for
sale If, however the building or improvement is sold within one year of completion, the owner builder will have the burden of proving that he did not build or improve for the purpose of sale)
& I as owner of the property, am exclusively contracting with licensed contractors to construct the project (Sec 7044, Business and Professions Code The Contractor s License Law does not apply to an owner of
property who builds or improves thereon, and contracts for such projects with contractor(s) licensed pursuant to the Contractor's License Law)
O I am exempt under Section Business and Professions Code for this reason
1 I personally plan to provide the major labor and materials for construction of the proposed property improvement n Yes D No
2 I (have / have not) signed an application for a building permit for the proposed work
3 I have contracted with the following person (firm) to provide the proposed construction (include name address / phone / contractors license number)
4 I plan to provide portions of the work but I have hired the following person to coordinate supervise and provide the major work (include name / address / phone / contractors license number)
5 I will provide some of the work but I have contracted (hired) the following persons to provide the work indicated (include name / address / phone / type of work)
Is the applicant or future building occupant required to submit a business plan acutely hazardous materials registration form or risk management and prevention program under Sections 25505, 25633 or 25534 of the
Presley Tanner Hazardous Substance Account Act' D Yes D No
Is the applicant or future building occupant required to obtain a permit from the air pollution control district or air quality management district' d Yes d No
Is the facility to be constructed within 1 000 feet of the outer boundary of a school site' n Yes fj No
IF ANY OF THE ANSWERS ARE YES, /
EMERGENCY SERVICES AND THE AIR POLLUTION CONTROL DISTRICT
I hereby affirm that there is a construction lending agency for the performance of the work this permit is issued (Sec 3097 (i) Civil Code)
Lender's Name Lender's Address
I certify that I have read the application and state that the above information is correct and that the information on the plans is accurate I agree to comply with all City ordinances and State laws relating to building construction
I hereby authorize representative of the City of Carlsbad to enter upon (he above mentioned property for inspection purposes I ALSO AGREE TO SAVE, INDEMNIFY AND KEEP HARMLESS THE CITY OF CARLSBAD
AGAINST ALL LIABILITIES, JUDGMENTS COSTS AND EXPENSES WHICH MAY IN ANY WAY ACCRUE AGAINST SAID CITY IN CONSEQUENCE OF THE GRANTING OF THIS PERMIT
OSHA An OSHA permit is required for excavations over SO' deep and demolition or construction of structures over 3 stones in height
EXPIRATION Every permit issued by the Building Official under the provisions of ttiis Code shall expire by limitation and become null and void if the building or work authorized by such permit is not commenced within
180 days from the date of such permit or if the building or work authorized by such permit is suspended or abandoned at any tome after the work is commenced for a period of 180 days (Section 106 4 4 Uniform Building Code)
DATE g/ft>/o3
City of Carlsbad Bldg Inspection Request
For 08/03/2009
Permit# CB080952
Title MATSUBARA 2 RETAIN WALLS =
Description DRIVE WALLM20SF/EAST SIDE-382SF
Inspector Assignment MC
Type RETAIN
Job Address
Suite
Location
APPLICANT BOBSUKUP
Owner
Remarks
Sub Type
1350 CHINQUAPIN AV
Lot 0
Phone 7605198730
Inspector
Total Time Requested By BOB
Entered By JANEAN
CD Description
69 Final Masonry
Act Comments
Comments/Notices/Holds
Associated PCRs/CVs Original PC#
Inspection History
Date Description Act Insp
02/13/2009 98 BMP Inspection PA MC
01/22/2009 62 Steel/Bond Beam AP PD
01/16/2009 61 Footing AP MC
01/09/2009 62 Steel/Bond Beam PA PC
01/06/2009 11 Ftg/Foundation/Piers PA MC
01/06/2009 12 Steel/Bond Beam WC MC
12/02/2008 62 Steel/Bond Beam PA MC
11/17/2008 62 Steel/Bond Beam PA MC
10/22/2008 61 Footing PA MC
Comments
ONGOING
GROUT EAST WALL
AT "A" WALL
SEE CARD FOR LOCATION
FTG & STEEL FOR NEXT 3 SECTIONS OF A WALL
BOND BEAM AT 3 SECTIONS OF WALL A
B & CITY STANDARD WALLS ONLY NEED LETTER FROM E O R
FOR FENCING LOAD ON TOP OF WALL
FTG & STEEL WEST SIDE WALL, FTG & STEEL FOR 3 SECTIONS OF
EAST SIDE WALL SEE APPR PLAN
City of Carlsbad Bldg Inspection Request
For 10/22/2008
Permit* CB080952
Title MATSUBARA 2 RETAIN WALLS =
Description DRIVE WALL=420SF/EAST SIDE-382SF
Inspector Assignment
1350 CHINQUAPIN AV
Lot 0
Type RETAIN Sub Type
Job Address
Suite
Location
APPLICANT BOBSUKUP
Owner
Remarks P M PLEASE STEEL ON TWO RETAIN WALLS
Phone 7602145824
Inspect/r
Total Time Requested By TONY BRADLEY
Entered By CHRISTINE
CD Description
61 Footing
Act Comments
Comments/Notices/Holds
Associated PCRs/CVs Original PC#
Inspection History
Date Description Act Insp Comments
..10/18,2029 B & E E
FAX TRANSMITTAL
K Engineering, Inc.
en*, oeoreewww.' * aMurrBNoncai/Ha
FOUNDATION OSSIGN • LAND SURVEYING • Sfll. TSSTIN6
TO •
COMPANY;
FAX:
FROM-
A total of pages >,jll bfc transmitted
this cover sheet.
If you do not receive all the pages or
please call USB J 945-3150
DATE
a copy is riot legible.
MESSAGE:
tfill-A SO MELROSE DRIVES2&5, VISTA. CA9208'-5471 Ph f760)945-31SO Fax (760) S4J-4.U 1
_10/' .'2028 15' 14 7609454221 B g B ENGINEERING 32
DAILY FIELD REPORT No: /
Job Project No.:Dote:
ocation Weather:= umir
Contractor j
Field Technician :
Foreman-
Miles:Hours:
Equipment Working :Inspection / Testing of
GffS&?M& W tttU. f&mUMN fXO/MMWS fff SOtS BfiWSHf
Summary ofOperations :
Supery[sor :Engineer :Geologist ;
Todays Yardage :Yardage to Date:
LJujB&BEngineering, In.c.
\_fa siffi? 1611-A SOUTh UeLROSf DR. iflBS, \ASTA, C* 92301off.
fe*
EsGil Corporation
In (Partnership with government for (Buifcfing Safety
DATE O6/24/2008
JURISDICTION City of Carlsbad TTTCANREVIEWER
a FILE
PLAN CHECK NO O80952 SET II
PROJECT ADDRESS 1350 Chinquapin Ave.
PROJECT NAME Retaining Walls
XI The plans transmitted herewith have been corrected where necessary and substantially comply
with the jurisdiction's building codes
The plans transmitted herewith will substantially comply with the jurisdiction's building codes
when minor deficiencies identified below are resolved and checked by building department staff
The plans transmitted herewith have significant deficiencies identified on the enclosed check list
and should be corrected and resubmitted for a complete recheck
The check list transmitted herewith is for your information The plans are being held at Esgil
Corporation until corrected plans are submitted for recheck
The applicant's copy of the check list is enclosed for the jurisdiction to forward to the applicant
contact person
The applicant's copy of the check list has been sent to
XI Esgil Corporation staff did not advise the applicant that the plan check has been completed
Esgil Corporation staff did advise the applicant that the plan check has been completed
REMARKS
By Aaron Goodman for David Yao Enclosures
Esgil Corporation
D GA D MB D EJ D PC 06/17/2008
9320 Chesapeake Drive, Suite 208 * San Diego, California 92123 + (858)560-1468 * Fax (858) 560-1576
EsGii Corporation
In (Partnership with government for (BuiCcCing Safety
DATE 5/30/08
_
JURISDICTION City of Carlsbad a PLAN REVIEWER
a FILE
PLAN CHECK NO 080952 SET I
PROJECT ADDRESS 1350 Chinquapin Ave.
PROJECT NAME Retaining Walls
The plans transmitted herewith have been corrected where necessary and substantially comply
with the jurisdiction's building codes
The plans transmitted herewith will substantially comply with the jurisdiction's building codes
when minor deficiencies identified below are resolved and checked by building department staff
The plans transmitted herewith have significant deficiencies identified on the enclosed check list
and should be corrected and resubmitted for a complete recheck
XI The check list transmitted herewith is for your information The plans are being held at Esgil
Corporation until corrected plans are submitted for recheck
The applicant's copy of the check list is enclosed for the jurisdiction to forward to the applicant
contact person
XI The applicant's copy of the check list has been sent to
Bob Sukup 4322 Sea Bright Place Carlsbad, CA 92008
Esgil Corporation staff did not advise the applicant that the plan check has been completed
XI Esgil Corporation staff did advise the applicant that the plan check has been completed
Person contacted Bob Sujoip Telephone # 760-720-0098
Date contacted $/3c/°°(b\i^43) Fax # 760-720-0098
Mail/'Telephone Fax^ In Person
REMARKS
By David Yao Enclosures
Esgil Corporationn GA n MB n EJ n PC 5/22
9320 Chesapeake Dn\e, Suite 208 + San Diego, California 92123 * (858)560-1468 * Fax (858) 560-1576
City of Carlsbad O8O952
5/3O/08
GENERAL PLAN CORRECTION LIST
JURISDICTION City of Carlsbad PLAN CHECK NO O8O952
PROJECT ADDRESS 135O Chinquapin Ave.
DATE PLAN RECEIVED BY DATE REVIEW COMPLETED
ESGIL CORPORATION 5/22 5/30/08
REVIEWED BY David Yao
FOREWORD (PLEASE READ).
This plan review is limited to the technical requirements contained in the International Building
Code, Uniform Plumbing Code, Uniform Mechanical Code, National Electrical Code and state
laws regulating energy conservation, noise attenuation and disabled access This plan review
is based on regulations enforced by the Building Department You may have other corrections
based on laws and ordinances enforced by the Planning Department, Engineering Department
or other departments
The following items listed need clarification, modification or change All items must be satisfied
before the plans will be in conformance with the cited codes and regulations The approval of
the plans does not permit the violation of any state, county or city law
• To facilitate recheckmg, please identify, next to each item, the sheet of the plans upon
which each correction on this sheet has been made and return this sheet with the
revised plans
• Please indicate here if any changes have been made to the plans that are not a result of
corrections from this list If there are other changes, please briefly describe them and where
they are located on the plans Have changes been made not resulting from this list?
Q Yes a No
City of Carlsbad O80952
5/30/08
Please make all corrections, as requested in the correction list Submit three new complete sets
of plans for commercial/industrial projects (two sets of plans for residential projects) For
expeditious processing, corrected sets can be submitted in one of two ways
1 Deliver all corrected sets of plans and calculations/reports directly to the City of
Carlsbad Building Department, 1635 Faraday Ave , Carlsbad, CA 92008, (760) 602-2700
The City will route the plans to EsGil Corporation and the Carlsbad Planning, Engineering
and Fire Departments
2 Bring one corrected set of plans and calculations/reports to EsGil Corporation, 9320
Chesapeake Drive, Suite 208, San Diego, CA 92123, (858) 560-1468 Deliver all
remaining sets of plans and calculations/reports directly to the City of Carlsbad Building
Department for routing to their Planning, Engineering and Fire Departments
NOTE Plans that are submitted directly to EsGil Corporation only will not be reviewed by
the City Planning, Engineering and Fire Departments until review by EsGil Corporation is
complete
1 Provide a statement on the Title Sheet of the plans, stating that this project shall comply
with the 2007 California Building Code, which adopts the 2006 IBC
2 Provide a copy of the project soil report The report shall include foundation design
recommendations based on the engineer's findings (include the retaining wall
recommendation)
3 In Seismic Design Categories D, E or F, the soils investigation must address liquefaction,
and, if retaining walls are proposed, the soils investigation must address increased
loading on the walls due to earthquake motions Section 1802 2 7
4 Provide a letter from the soils engineer confirming that the foundation plan, grading plan
and specifications have been reviewed and that it has been determined that the
recommendations in the soils report are properly incorporated into the construction
documents (when required bv the soil report)
5 Specify on the foundation plan or structural specifications sheet the soil classification, the
soils expansion index and the design bearing capacity of the foundation Section
A106 1 1
6 The soils engineer recommended that he/she review the foundation excavations Note
on the foundation plan that "Prior to the contractor requesting a Building Department
foundation inspection, the soils engineer shall advise the building official in writing that
a) The foundation excavations, the soils expansive characteristics and bearing
capacity conform to the soils report "
• Special Inspection of Materials and Construction
7 The plans shall indicate that special inspection will be provided for the following work
(Section A106 1)
City of Carlsbad O8O952
5/30/08
a) Masonry construction Special inspection should be provided for all ma;
construction in accordance with Section 1704 5 2 and Table 1704 5 1 (Section
1704 5 2 and Table 170453)
8 The jurisdiction has contracted with Esgil Corporation located at 9320 Chesapeake Drive,
Suite 208, San Diego, California 92123, telephone number of 858/560-1468, to perform the
plan review for your project If you have any questions regarding these plan review items,
please contact David Yao at Esgil Corporation Thank you
END
City of Carlsbad 08O952
5/30/08
VALUATION AND PLAN CHECK FEE
JURISDICTION City of Carlsbad PLAN CHECK NO O8O952
PREPARED BY David Yao DATE 5/30/08
BUILDING ADDRESS 1350 Chinquapin Ave.
BUILDING OCCUPANCY TYPE OF CONSTRUCTION
BUILDING
PORTION
retaining walls
Air Conditioning
Fire Sprinklers
TOTAL VALUE
Jurisdiction Code
AREA
(Sq Ft)
802
cb
Valuation
Multiplier
1774
By Ordinance
Reg
Mod
VALUE (S)
14,227
14,227
Bldg Permit Fee by Ordinance
Plan Check Fee by Ordinance
Type of Review
LTl Repetitive FeeRepeats
Complete Review
D Other
I—i Hourly
Structural Only
Hour*
Esgil Plan Review Fee
Comments
$15075
$9799
$8442
Sheet 1 of 1
macvalue doc
PLANNING/ENGINEERING APPROVALS
PERMIT NUMBER
ADDRESS
RESIDENTIAL
RESIDENTIAL ADDITION MINOR
«$10,000.00)
TENANT IMPROVEMENT
PLAZA CAMINO REAL
CARLSBAD COMPANY STORES
VILLAGE FAIRE
COMPLETE OFFICE BUILDING
OTHER
ENGINEER
DATE 5~c3 / -
DATE
Docs/MUramu/Ptanning Enqinccnng Appravalc
STRUCTURAL CALCULATIONS
Project Site Retaining Wall's for
Taeko Matsubara
Carlsbad, Ca
Engineer Schmit Engineering
1965RohnRd
Escondido, Ca 92025
(760) 743-0592
Code
Date
2007 California Building Code
Mav-13, 2008
TABLE OF CONTENTS
Site Wall Desiens 1-5
SCHM1T ENGINEERING
STRUCTURAL DESIGN
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Escondido, Ca 92025
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Carlsbad, Ca,
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Escondido, Ca. 92025
(760) 743-0592
Code
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May 13,2008
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FOUNDATION NOTES
1) Foundation design is based upon an allowable soil bearing bearing value of 1850 psf See
soils report by "B & B Engineering, Inc.". Project No MAT 307-INV. Sou1 engineer of
record shall submit a final compaction report to be submitted to the Building Inspector prior to
foundation inspection.
2) Contractor to verify all dimensions and conditions prior to starting work, any discrepancies
to be brought to the designers attention immediately
3) All footings to be founded a minimum of 12" deep as meausred below lowest adjacent grade
or as determined by soils engineer in field Contractor to follow all recommendations in soils
report for sub-grade preparation, etc All surface water to dram away from building.
4) All foundation excavations be inspected by the soils engineer Prior to the contractor
requesting a building department foundation inspection, the soils engineer shall advise the
building official in writing that
a) The building pad was prepared in accordance with the soils report,
b) The utility trenches have been properly backfilled and compacted, and
c) The foundation excavations, forming and reinforcements comply with the soils report and
approved plan
5) The soils engineer is to review the final grading plan and foundation plans prior to work
starting Written approval to be sent to the designer.
6) Footings near cut/ fill slopes shall maintain 7' to daylight from bottom of footing, U O.N.
7) For trenching near footings, see detail 1.
8) For typical stepped wall footing, see detail 2
9) For typical reinforcing at corner conditions, see detail 3
10) For minimum bar bends at reinforcing steel, see detail 4
11) Contractor to verify all underground existing utilities prior to starting work
12) Provide expansion joints in walls per detail 5
DO NOT EXCAVATE
PIPE TRENCH
PARALLEL TO FOOTING
BELOW THIS LINE
ALL PIPE SLEEVES 2"
LARGER THAN PIPE
DO NOT PLACE PIPE
IN THIS AREA
CONC. FILL TO BE
PLACED BEFORE FTC;.
IS POURED. MAKE
SAME WIDTH AS FTG
AND FULL WIDTH OF
TRENCH CTRENCH =
SLEEVE DIA.4. -
PERPENDICULAR
STD2H
, 30 BAR
DIA. IS"
MIN
DIA 18"
MIN.
RISE
'-&" MAX
SAME AS FTG. DEPTH
RE INF. SAME SIZE
SPACING AS FTG. RE INF
NOTE- SLOPE ONE VERTICAL TO
TWO HORIZONTAL fLJ.N.O
TYPICAL STEPPED WALL FOOTING
L L L
r
^
s 1
/
s~• •
Jl_
t
DOUBLE CURTAIN
-m
SINGLE CURTAIN
21
E
cO
"L" = 30 BAR DIA. FOR CONCRETE
"L" = 40 BAR DIA. FOR MASONRY
TYPICAL REINFORCING * CORNERS 4 INTERSECTIONS
STD09
HOOK
T3(N
* BEND
MIN.30d-CONCRETE
40d- MASONRY
LAP 4 OFFSET
45' BEND
STIRRUP OR TIE
NOTE- "R" = 3d FOR *£>
BARS OR SMALLER:
"R" = 4d FOR *3 BARS
OR LARGER
TYPICAL REINFORCING BAR BENDING
STD10
1
REQUIRED SPECIAL INSPECTIONS
In addition to the regular inspections, the following checked items will also require
Special Inspection in accordance with the Uniform Building Code Structural tests and
Structural observations shall comply with the applicable provisions of Chapter 1 7 of
the 2007 California Building Code
Item
Soils compliance
nnor toi
foundation inspection
Structural concrete over
2500 psi
Prestressed steel
Field welding
High strength bolts
Expansion anchors
Special masonry
Sprayed on fire proofing
Piles / Caissons
Designer - specified
Other
Required
If
Checked
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Remarks
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CIVIL, GEOTECHNICAL, & QUALITY ENGINEERING
FOUNDATION DESIGN * LAND SURVEYING * SOIL TESTING
CLIENT: MATSUBARA
PROJECT: MAT 608-FTG
DATE: 8 JUNE 2008
CITY OF CARLSBAD
ENGINEERING DEPARTMENT
1635 Faraday Ave.
Carlsbad, CA. 92008
Subject: Soils Engineering Foundation Plan Certification for the Proposed
Residential Construction located at 1552 Chinquapin Ave., Carlsbad, CA.
(APN: 206-262-1 l)(Matsubara Residence)
Reference (a): Our Limited Soil Investigation dated 9 April 2007.
Gentlemen:
Pursuant to the City of Carlsbad requirements, this letter will serve as
confirmation that the building foundation plans and specifications have been
reviewed for the subject project. We have determined that the recommendations
in Reference (a) have been properly incorporated into the construction documents.
Sincerely,
Stephen B. Peter RCE 38623
Expires 3-31-09
1611-ASO MELROSE DRIVE #285, VISTA, CA 92081-5471 Ph (760)945-3
, inc.
CIVIL, GEOTECHN1CAL, & QUALITY ENGINEERING
FOUNDATION DESIGN * LAND SURVEYING * SOIL TESTING
CLIENT: MATSUBARA
PROJECT: MAT 608-3RD-PARTY
DATE: 8 JUNE 2008
CITY OF CARLSBAD
ENGINEERING DEPARTMENT
1635 Faraday Ave.
Carlsbad, CA. 92008
Subject: Response to Third Party Geotechnical Review for the Proposed
Residential Construction for the Lot located at 1552 Chinquapin Ave.,
Carlsbad, CA. (APN: 206-262-1 l)(Matsubara Residence)
Reference (a): Our Limited Soil Investigation dated 9 April 2007.
Gentlemen:
Pursuant to the requirements of the City of Carlsbad and in accordance with
the third party review memorandum by EsGil Corporation dated May 30,2008, the
following information is submitted.
2. Reference (a) shall be considered part of the plans and specifications for
the subject project. Recommendations for building foundation design and
retaining walls are included in Reference (a).
3. References to the 2001 Uniform Building Code as referred to in
Reference (a) shall be changed to refer to the 2007 California Building Code
(CBC) and the 2006 International Building Code (IBC). According to Section
1806A.1 of the CBC, retaining walls shall be designed to resist lateral soil loads
which are detailed in Reference (a). Retaining walls, less than 12 feet in height,
that are free to move and rotate at the top are permitted to be designed for active
pressure only. No additional loads for seismic are necessary for design.
The Engineer has prepared this Report for the exclusive use of the client and
authorized agents. This Report has been prepared in accordance with generally
accepted soil and foundation engineering practices. No other warranties, either
expressed or implied, are made as to the professional advice provided under the
terms of this agreement, and included in the Report.
1611-ASO MELROSE DRIVE #285, VISTA, CA 92081-5471 Ph (760)«T5-3'
inc.
Mat 608-3rd party
B & B Engineering Inc. and Associates appreciate this opportunity to be of
service. Should you have any questions regarding this project, please do not
hesitate to contact us.
Sincerely,
Stephen B. Peter RCE 38623
Expires 3-31-09
1611-ASO MELROSEDRIVE#285,VISTA,CA92081-5471 Ph (760)945-3150 Fax (760)945-4221
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it&U EiHjiaveriiiij, inc.
CIVIL, GEOTECHNICAL, ft QUALITY ENGINEERING
FOUNDATION DESIGN * LAND SURVEYING • SOIL TESTING
CLIENT: MATSUBARA
PROJECT: MAT 307-INV
DATE: 9 APRIL 2007
[ MR. TAEKO MATSUBARA
13 60 Forrest Ave.
I Carlsbad, CA. 92008
Subject: Limited Soil Investigation for the Proposed Room Additions for the
I Residence located on Chinquapin Ave., Carlsbad, CA.
(APN: 206-262-11)
Dear Mr. Matsubara:
Pursuant to your request, we have completed our site inspection for the
subject parcel. The purpose of this investigation was to determine the general
engineering characteristics of the soils on and underlying the site and to provide
specific recommendations for the design parameters for foundations and retaining
structures, slab-on-grade floors and site earthwork.
The proposed development consists of the construction of a single/two
story, wood framed, stucco type residential structure on a vacant lot. At the time
of this investigation, the lot was covered with some low lying grasses and other
native vegetation.I
On 19 March 2007, a field investigation was performed at the subject site.
I This investigation consisted of the excavation of 2 test pits dug with a backhoe.
As the test pits were advanced, the soils were visually classified by our field
representative. Undisturbed and bulk samples, as well as hi place density tests,
were obtained at various depths representative of the different soils horizons. All
samples were returned to our laboratory for detailed testing.
Based on our visual inspections and observations in the field, and our
laboratory test results, the following conclusions were derived. It is our opinion
that the subject lot may support the proposed residential structure. However, the
conclusions and recommendations found in the latter part of this report shall be
incorporated in the design plans and specifications.
1611-ASO MELROSE DRIVE #285, VISTA, CA 92081-5471 Ph:(760)9f-3150
, inc.
Mat 307-inv
GRADING
On the basis of our investigation, development of the site as proposed is
considered feasible from a soils engineering standpoint provided that the
recommendations stated herein are incorporated in the design of foundation
systems and are implemented in the field.
Site preparation should begin with the removal the existing surface
vegetation and other deleterious matter. These materials are not suitable for
support of the proposed structure and should be exported from the site. Also, any
subsurface structures such as cesspools, wells, or abandoned pipelines, which are
uncovered during the clearing operation, shall be removed or backfilled in
accordance with the requirements of the City of Carlsbad.
All on-site earth materials are considered suitable for the support of the
proposed structures. However, prior to construction or placing fill, the loose
surface materials occurring in the area of the proposed house pad shall be
removed to a depth where firm, dense native soils are encountered. The depth of
removal is anticipated to be approximately 3 to 5 feet below the existing surface.
This can be accomplished during the rough grading operation by over-excavating
the upper 3 to 5 feet of the surface soils, ripping the exposed bottom surface to a
minimum depth of 12 inches, and recompacting the soil to the design grade. All
structural fill shall be compacted to at least 90% of the maximum dry density at
near optimum moisture content as determined in accordance with ASTM Test
Procedure D 1557-01.
In the event that the finish grade soils expose a transition lot condition; i.e.,
a cut/fill daylight line through the proposed structure, the cut portion of the house
pad shall be over-excavated and recompacted to a depth of 3 feet below the
finished grade. The limits of over-excavation shall extend a minimum of 5 feet
outside of the perimeter building foundations. This will provide a uniform fill
blanket for an even support of the structure and will help mitigate the effects of
differential settlement. It is anticipated that the building footings may experience
less than 1 inch settlement with less than V* inch differential settlements between
adjacent footings of similar sizes and loads.
Site drainage should be dispersed by non-erodible devices in a manner to
preclude concentrated runoff over graded and natural areas in accordance with the
City of Carlsbad requirements.
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1611-ASO MELROSE DRIVE #285, VISTA, CA 92081-5471 Ph (760)945-3150 Fax (760)945-4221
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Mat 307-inv
GEOLOGIC HAZARDS
According to published information, there are no known active or
potentially active faults on or hi the immediate vicinity of the subject site.
Therefore, the potential for ground rupture at this site is considered low. There
are, however, several faults located within a close proximity to this site that the
movement associated with them could cause significant ground motion. The
following table presents the distance of major faults from the site, the assumed
maximum credible earthquake magnitudes and estimated peak accelerations
anticipated at the site. The severity of ground motion is not anticipated to be any
greater at this site than in other areas of San Diego County.
SEISMICITY OF MAJOR FAULTS
MAXIMUM MOMENT SLIP RATE
FAULT/TYPE DISTANCE MAGNITUDE(RICHTER) mm/year
Rose Canyon (B) * 10 km 6.9 1.5
Elsinore-Julian Seg(A) 24 mi. 7.1 5
San Jacinto-Borrego Seg(B) 47 mi. 6.6 4
San Andreas-South-Seg(A) 71 mi. 7.4 24
The following information is presented relative to the subject site and
Seismic Zone 4 per the California Building Code, C.B.C.:
(z) Seismic zone factor = 0.4 Table 16 A-I
(Na) Near-source factor = 1.0 Tablel6A-S
(B) Seismic source type = B Tablel6A-U
(Sd) Soil profile type = Sd Tablel6A-J
(Ca) Seismic coefficient = 0.44 Na Table 16 A-Q
(Cv) Seismic coefficient = 0.64 Nv Table 16 A-R
(Nv) Near source factor = 1.0 Table 16 A-T
LIQUEFACTION POTENTIAL
Liquefaction analysis of the soils underlying the site was based on the
consideration of various factors which include the water level, soil type gradation,
relative density, intensity of ground shaking and duration of shaking.
Liquefaction potential has been found to be the greatest where the ground water
level is shallow and loose fine sands occur within a depth of 50 feet or less. These
conditions are not present within the site area and, therefore, the potential for
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1611-A SO. MELROSE DRIVE #285, VISTA, CA 92081-5471 Ph (760)945-3150 Fax (760)945-4221
JMJSF EuijiueeritHj, inc.
Mat 307-inv
generalized liquefaction in the event of a strong to moderate earthquake on nearby
faults is considered to be low.
In general, the native soils at a depth of 1 to 4 feet below the existing
surface are considered to have a very low expansion potential (El = 0) according
to our Expansion Test results, Enclosure (1). Therefore, additional foundation and
slab requirements are not considered necessary in regard to soil expansion.
Foundations shall be sized and constructed in accordance with the Structural
Engineer's design, based on the earth pressures and the allowable bearing values
listed in the latter part of this report, along with the expected live and dead loads,
and the projected wind and seismic loads. All grading and/or foundation plans
shall be reviewed by our Engineer.
FOUNDATION DESIGN
The proposed structure for this project can be supported by conventional
isolated, spread and/or continuous footings using the following soil parameters.
For foundation design purposes, the following earth pressures were calculated
based on our Shear Test results Enclosure (1) for the native soils and based on a
foundation depth and width of 12 inches:
Test Pit No. 1 at 1 to 4 feet below the surface:
(Brown fine SAND)
Shear Test: Cohesion =171 psf; Angle of Friction = 34°.
Allowable Bearing Value = 1850 psf
Equivalent Fluid Pressure = 35 pcf
Passive Lateral Resistance = 400 pcf
At-rest Pressure = 55 pcf
Coefficient of Friction = 0.35
Expansion Index = 0 (Non-expansive)
These values are for dead plus live loads and may be increased by one-third
(1/3) for seismic and wind loads where allowed by code. These design bearing
values are in accordance with the Uniform Building Code.
The surface soil was tested for sulfate content by Clarkson Laboratory and
Supply, Inc., on March 23,2007. The results of this test indicated that the water
soluble sulfate content was found to contain <0.001% (Negligible) per
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1611-ASO MELROSE DRIVE #285, VISTA, CA 92081-5471 Ph.(760)945-3150 Fax (760)945-4221
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Mat 307-inv
California Test 417 (See enclosure 2). Therefore, per the 2001 California
Building Code, Type II cement with a maximum water-cement ratio of 0.50 and a
minimum concrete strength (f c) of 2500 psi should be used for concrete hi contact
with on-site earth materials.
RETAINING WALLS
An equivalent fluid pressure of 35 pcf may be used for design of retaining
walls with level backfill and 55 pcf for 2H:1V sloping backfill. These figures are
based on a drained condition and use of granular backfill having a sand equivalent
of 30 or greater. If the native soils are used as backfill, the equivalent fluid
pressure of 35 pcf (level) and 55 pcf (2H:1V slope) for active conditions and 60
pcf (level) and 70 pcf (2H:1V sloping) for at-rest conditions can be used.
FOUNDATIONS
It is recommended that the continuous perimeter foundations and concrete
slabs for a light-weight, wood framed structure shall be reinforced hi accordance
with the following minimum designs:
a. For slab-on-grade floors: it is recommenderl that the continuous perimeter
foundations for a single story structure shall extend: a mmimum depth of 15 inches
and a minimum width of 15 niches into the firm native or compacted fill material
as measured from the lowest adjacent grade. A minimum of 18 inches deep by 15
niches wide shall be used for a two story structure.
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• b. All foundations shall be reinforced with at least four No.4 steel bars, two
bars shall be placed 3 inches from the top of the foundation and the other bars
I shall be placed 3 inches from the bottom. As an alternative to the 4 steel bars, the
contractor may substitute two No. 5 steel bars, one top and one bottom.
c. Footings placed on or adjacent to the top of cut or fill slopes shall have a
minimum horizontal distance of 7 feet from the bottom edge of the footings to the
face of the slope, for slopes less than 20 feet in height. For slopes greater than 20
feet, a horizontal distance of H/3 shall be used where H = height of slope, but
need not exceed 40 feet maximum. (See attachment A)
d. All interior concrete slabs shall be a minimum of 4 inches in thickness
and reinforced with a minimum of No. 3 rebar at 18 niches on center both ways
placed hi the center of the slab. The bars shall be bent downward into the
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1611-ASO MELROSE DRIVE #285, VISTA, CA 92081-5471 Ph (760)945-3150 Fax (760)945-4221
, inc.
Mat 307-inv
perimeter footings and wire tied to the foundation steel at 18 inches on center. In
order to minimize vapor transmission, an impermeable membrane (ie: 10 mil
visqueen) shall be placed over 2 inches of clean, poorly graded, coarse sand,
decomposed granite, or crushed rock. The membrane shall be covered with 2
inches of sand to protect it during construction and the sand should be lightly
moistened just prior to placing concrete. All concrete used on this project shall
I have a rnrnimum compressive strength of 2500 psi unless otherwise stated on the
Building Plans.
• e. Interior concrete slabs shall be provided with saw-cut joints spaced at a
maximum of 10 feet on center each way within 24 hours after the pour and the
I saw-cuts shall be 1/4 of the slab thickness. It is imperative that the drainage
system around the proposed structure shall be designed and implemented to
1 provide positive drainage away from all buildings in order to preclude moisture
intrusion into the subgrade soils beneath the building foundations and slabs.
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f. Exterior slabs for hardscape, pool decks, walkways, patios, etc. shall be a
minimum of 4 inches in thickness and reinforced with a minimum of No. 3 steel
rebars at 24 inches on center each way. The reinforcing steel shall be placed in the
upper 1/3 of the slab and held in place with concrete chairs.
If imported soil materials are used during grading to bring the building pad
to the design elevations, or if variations of soils or building locations are
encountered, foundation and slab designs shall be reevaluated by our firm upon
the completion of the rough grading operation.
LIMITATIONS AND UNIFORMITY OF CONDITIONS
The analysis and recommendations submitted hi this Report are based in
part upon the data obtained from the test pit excavations performed on the site and
our experience and judgement. The nature and extent of variations between the
test pits may not become evident until construction. If variations then appear
evident, it will be necessary to re-evaluate the recommendations of this Report.
Findings of the Report are valid as of this date; however, changes in
conditions of a property can occur with passage of time whether they be due to
natural process or works of man on this or adjacent properties. In addition,
changes in applicable or appropriate standards occur whether they result from
legislation or broadening of knowledge. Accordingly, findings of this Report may
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1611-ASO MELROSE DRIVE #285, VISTA, CA 92081-5471 Ph.(760)945-3150 Fax (760)945^221
Em/iucer/ny, inc.
1 ^^ be invalidated wholly or partially by changes outside our control. Therefore, this
^P Report is subject to review after a period of one year.
I In the event that any changes in the nature, design, or location of buildings
are planned, the conclusions and recommendations contained in this Report shall
• not be considered valid unless the changes are reviewed and the conclusions of
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this Report are modified or verified in writing.
This Report is issued with the understanding that it is the responsibility of
the owner or of his representative to ensure that the information and the
recommendations contained herein are called to the attention of the project
Architect and Engineer and are incorporated into the plans. Further, the necessary
steps shall be taken to ensure that the contractor and subcontractors carry out such
recommendations in the field.
It is recommended that the Soil Engineer be provided the opportunity for a
general review of the final design plans and specifications for this project in order
that the recommendations of this report may be properly interpreted and
implemented in the design. It is also recommended that the Soil Engineer be
provided the opportunity to verify the foundation and slab construction in the field
prior to placing concrete. (If the Soil Engineer is not accorded the privilege of
making these reviews, he can assume no responsibility for misinterpretation of his
recommendations).
The Engineer has prepared this Report for the exclusive use of the
client and authorized agents. This Report has been prepared in accordance with
generally accepted soil and foundation engineering practices. No other warranties,
either expressed or implied, are made as to the professional advice provided under
the terms of this agreement, and included in the Report.
I B & B Engineering Inc. and Associates appreciate this opportunity to be of
service. Should you have any questions regarding this project, please do not
• hesitate to contact us.
I
to
Sincerely,
is HQ3S623 tephen B. Peter RCE 38623
Expires 3-31-0?
7
161 l-A SO. MELROSE DRIVE #285, VISTA, CA 92081-5471 Ph.(760)945-3150 Fax (760)945-4221
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Direct Shear Test Results
45 •
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05
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• Shear Strength
inches of Defbn
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[nation
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0 05 10 15 20 2.5 30 35 40
Confining Pressure (ksf)
45 50
INTERNAL COHESION
FRICTION INTERCEPT
MWPLE DESCRIPTION ANGLE(DEG ) (PSF)
TP1 @1 -4 BRN FINE SAND (SHEAR REMOLDED TO 90% OF M D )
Shear S&ejigth at 34
0.2 Inches of Deformation £X?t^K)'Slo«^ |*JC?ey.
fel||^. SOUTHERN CALIFORNIA
CS^P SOIL & TESTING
= O - tJo* -£&***)
171
si ve
B&B ENG (MAT 306 INV)
BY JJS/GBF
JOB NUMBER 0712032
DATE 4/3/2007
APPENDIX 11-10
J-.A13UKATUKX REPORT
I Telephone (619) 425-1993 Fax 425-7917 Established 1928
LARKSON LABORATORY AND SUPPLY INC.
0 Trousdale Dr. Chula Vista, Ca. 91910 www.clarksonlab.com
NALYTICAL AND CONSULTING CHEMISTS
Date: March 23, 2007
Purchase Order Number:
Sales Order Number: 87765
Account Number: BSB
To:
B & B Engineering
1611-A SO. Melrose Drive #285
Vista, CA 92081
Attention: Dennis P. Beard
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Laboratory Number: SO2254 Customers Phone: 760-945-3150
J Fax: 760-945-4221
Sample Designation:
• Five soil samples received on 03/21/07 marked as follows:
ANALYSIS: Water Soluble Sulfate California Test 417
I Sample SO4%
I ^Hatsubara Mat 307 Inv.
TP-1@1-4'A <0.001
- Forbes For 307 TP-10-2-3' 0.013
* Hackbart Hac 307 TP-1@2-12' 0.045
I Lattin Lat 307 Inv. TP-1@3'-A 0.002
Lattin Lat 307 TP-1@10'-C 0.002
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Note: < Is the symbol for less than.
I
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LT/id
BE18A-M 2001 CALIFORNIA BUILDING CODE
FACE OF
FOOTING
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STRUCTURE
\
H/3 BUT NEED NOT
EXCEED 40 FT.
(12192 mm) MAX.
TOE OF
SLOPE
HI2 BUT NEED NOT EXCEED 15 FT (4572 mm) MAX.
FIGURE 18A-M—SETBACK DIMENSIONS
ATTACHMENT A,
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HW
S