HomeMy WebLinkAboutPIP 06-10; BRESSI RANCH INDUSTRIAL LOTS; WATER SYSTEM ANALYSIS; 2006-11-01pr?
WATER SYSTEM ANALYSIS
FOR
BRESSI RANCH
INDUSTRIAL LOTS 17-22
November 1, 2006
Prepared By:
Dexter Wilson Engineering, Inc.
2234 Faraday Avenue
Carlsbad, CA 92008
Job No: 850-002
DEXTER WILSON ENGINEERING, INC.
DEXTER S. WILSON, P.E.
ANDREW M. OVEN, P.E.
STEPHEN M. NIELSEN, P.E.
DIANE H. SHAUGHNESSY, P.E.
November 1, 2006 850-002
Urban West Strategies
1280 Bison Avenue B9-609
Newport Beach, CA 92660
Attention: David DiRenzio, Project Manager
Subject: Water System Analysis for Bressi Ranch Industrial Lots 17-22
This letter summarizes our analysis and recommendations for providing water service
to Lots 17-22 of the Bressi Ranch Industrial development. The proposed development
is being planned in two parts. Lots 17 and 18 consist of 5 industrial buildings on 4.30
acres and Lots 19-22 consist of 12 industrial buildings on 8.28 acres. The project is
located within the Carlsbad Municipal Water District's 550 Water Pressure Zone.
Existing water service lines within the vicinity of the project include a 12-inch 550
Zone water line in Innovation Way and a 12-inch 550 Zone water transmission line in
Gateway Drive.
Purpose of Study
A water system analysis dated October 22, 2002 (revised November 5, 2003) was
prepared for the Bressi Ranch project which includes Industrial Lots 17-22. This study
identified the backbone water facilities necessary to serve the planned developments,
but did not identify how water service would be provided to each of the industrial lots.
The purpose of this study is to identify the proposed water system layout for Industrial
Lots 17-22 to provide domestic and fire protection service.
2234 FARADAY AVENUE • CARLSBAD. CA 92008 • (760) 438-4422 • FAX (760) 438-0173
Peter Spencer
November 1, 2006
Page 2
Water Demands
The two demands used to design the system are domestic demands from the building
and fire flow demands. The projected water fixture units for the buildings have not yet
been established. As a result, this water study shows the locations of proposed
building water services, but the sizes are to be determined at a later date.
A design fire flowrate of 4,000 gpm was used in the fire system analysis, based on the
2003 Carlsbad Municipal Water District Water Master Plan. Fire sprinkler pipe sizing
and design are not considered in this water system analysis and will be provided by
others.
Proposed Domestic Water System
Based on finish floor elevations ranging from 320 to 371 feet, the maximum static
pressure with service from the 550 zone ranges from 78 to 100 psi. Lots 17 and 18 will
be served by a 12-inch line looped through the project with connections to 12-inch
water lines in Gateway Road and. Campbell Place. Lots 19-22 will also be served by
looping a 12-inch water line through the project with connections to a 12-inch water
line in Innovation Way and to a 12-inch water line within industrial Lot 23 to the
north. Figure 1 provides the recommended water facilities for the project.
Fire Flow Analysis
The proposed onsite water lines were sized based on the required fire flow for the
buildings within the project. The November 5, 2003 water study included hydraulic
modeling of the water system to ensure that fire flow requirements could be met
throughout the system, including a fire flow rate of 4,000 gpm for the industrial areas.
Peter Spencer
November 1, 2006
Page 3
Appendix A provides a hydraulic model of the onsite system to ensure that the fire flow
requirements are met with the proposed onsite piping configuration. The results of the
hydraulic analysis indicate that the piping has been adequately sized to supply the
domestic and fire protection needs of the project. Exhibit A provides the node and pipe
diagram that corresponds with the hydraulic model.
Thank you for the opportunity to work on your project. If you have any questions or
require additional information, please let us know.
Dexter Wilson Engineering, Inc.
19
(o No. 51070)
Exp. 9I30I07J
Stephen M. Nielsen
SMN:sbr
APPENDIX A
COMPUTER MODELING OUTPUT
The following conditions were modeled:
Average day demands
Maximum day demands plus 4,000 gpm fire flow at Node 16.
Maximum day demands plus 4,000 gpm fire flow at Node 24.
Peak hour demands
FLOWBATE IS EXPRESSED IN GPM AND PRESSURE IN PSIG
A SUMMARY OF THE ORIGINAL DATA FOLLOWS
PIPE NO. NODE NOS. LENGTH DIAMETER ROUGHNESS MINOR LOSS K FIXED GRADE
(FEET) (INCHES)
1 0 2 100.0 12.0 120.0 .00 550.00
3 2 4 400.0 12.0 120.0 .00
5 4 6 250.0 12.0 120.0 .00
7 4 10 350.0 12.0 120.0 .00
9 10 12 550.0 12.0 120.0 .00
11 6 8 230.0 12.0 120.0 .00
13 8 12 80.0 12.0 120.0 .00
15 12 14 170.0 12.0 120.0 .00
17 14 16 100.0 12.0 120.0 .00
19 16 18 380.0 12.0 120.0 .00
21 20 18 250.0 12.0 120.0 .00
23 6 20 260.0 12.0 120.0 .00
25 2 22 775.0 12.0 120.0 .00
27 22 24 250.0 12.0 120.0 .00
29 24 28 430.0 12.0 120.0 .00
31 26 28 250.0 12.0 120.0 .00
33 26 22 390.0 12.0 120.0 .00
35 0 26 100.0 12.0 120.0 .00 550.00
JUNCTION NUMBER DEMAND ELEVATION CONNECTING PIPES
2 .00 370.00 1 3 25
4 .00 370.00 3 5 7
6 2.00 365.00 5 11 23
8 2.00 368.00 11 13
10 .00 380.00 7 9
12 2.00 366.00 9 13 15
14 2.00 360.00 15 17
16 2.00 360.00 17 19
18 2.00 356.00 19 21
20 2.00 360.00 21 23
22 .00 325.00 25 27 33
24 3.00 325.00 27 29
26 .00 315.00 31 33 35
28 2.00 321.00 29 31
OUTPUT SELECTION: ALL RESULTS ARE OUTPUT EACH PERIOD
THIS SYSTEM HAS 18 PIPES WITH 14 JUNCTIONS , 3 LOOPS AND 2 FGNS
THE RESULTS ARE OBTAINED AFTER 11 TRIALS WITH AN ACCURACY = .00050
BRESSI RANCH INDUSTRIAL LOTS 17-22 WATER SYSTEM ANALYSIS
AVERAGE DAY DEMANDS
PIPE NO. NODE NOS. FLOWRATE HEAD LOSS PUMP HEAD MINOR LOSS VELOCITY HL/1000
1 0 2 12.01 .00 .00 .00 .03 .00
3 2 4 14.00 .00 .00 .00 .04 .00
5 4 6 9.12 .00 .00 .00 .03 .00
7 4 10 4.88 .00 .00 .00 .01 .00
9 10 12 4.88 .00 .00 .00 .01 .00
11 6 8 3.07 .00 .00 .00 .01 .00
13 8 12 1.07 .00 .00 .00 .00 .00
15 12 14 3.94 .00 .00 .00 .01 .00
17 14 16 1.94 .00 .00 .00 .01 .00
19 16 18 -.06 .00 .00 .00 .00 .00
21 20 18 2.06 .00 .00 .00 .01 .00
23 6 20 4.06 .00 .00 .00 .01 .00
25 2 22 -1.99 .00 .00 .00 -.01 .00
27 22 24 1.30 .00 .00 .00 .00 .00
29 24 28 -1.70 .00 .00 .00 .00 .00
31 26 28 3.70 .00 .00 .00 .01 .00
33 26 22 3.29 .00 .00 .00 .01 .00
35 0 26 6.99 .00 .00 .00 .02 .00
JUNCTION NUMBER DEMAND GRADE LINE ELEVATION PRESSURE
2 .00 550.00 370.00 78.00
4 .00 550.00 370.00 78.00
6 2.00 550.00 365.00 80.17
8 2.00 550.00 368.00 78.87
10 .00 550.00 380.00 73.67
12 2.00 550.00 366.00 79.73
14 2.00 550.00 360.00 82.33 -
16 2.00 550.00 360.00 82.33,
18 2.00 550.00 356.00 84.07
20 2.00 550.00 360.00 82.33
22 .00 550.00 325.00 97.50
24 3.00 550.00 325.00 97.50
26 .00 .550.00 315.00 101.83
28 2.00 550.00 321.00 99.23
THE NET SYSTEM DEMAND = 19.00
SUMMARY OF INFLOWS(+) AND OUTFLOWS(-) FROM FIXED GRADE NODES
PIPE NUMBER FLOWRATE
1 12.01
35 6.99
THE NET FLOW INTO THE SYSTEM FROM FIXED GRADE NODES = 19.00
THE NET FLOW OUT OF THE SYSTEM INTO FIXED GRADE NODES = .00
L
A SUMMARY OF CONDITIONS SPECIFIED FOR THE NEXT SIMULATION FOLLOWS
THE DEMANDS ARE CHANGED FROM ORIGINAL VALUES BY A FACTOR = 2.00
THE FOLLOWING SPECIFIC DEMAND CHANGES ARE MADE
JUNCTION NUMBER DEMAND
16 4004.00
THE RESULTS ARE OBTAINED AFTER 3 TRIALS WITH AN ACCURACY = .00137
XIMUM DAY DEMANDS PLUS 4000 GPM FIRE FLOW AT NODE 16
PIPE NO. NODE NOS. FLOWRATE HEAD LOSS PUMP HEAD MINOR LOSS VELOCITY HL/1000
1 0 2 3140.12 2.45 .00 .00 8.91 24.48
3 2 4 4028.00 15.53 .00 .00 11.43 38.83
5 4 6 2575.04 4.24 .00 .00 7.30 16.95
7 4 10 1452.96 2.06 .00 .00 4.12 5.87
9 10 12 1452.96 3.23 .00 .00 4.12 5.87
11 6 8 1079.62 .78 .00 .00 3.06 3.39
13. 8 12 1075.62 .27 .00 .00 3.05 3.37
15 12 14 2524.58 2.78 .00 .00 7.16 16.34
17 14 16 2520.58 . 1.63 .00 .00 7.15 16.30
19 16 18 -1483.42 -2.32 .00 .00 -4.21 -6.11
21 20 18 1487.42 1.53 .00 .00 4.22 6.14
23 6 20 1491.42 1.60 .00 .00 4.23 6.17
25 2 22 -887.88 -1.83 .00 .00 -2.52 -2.36
27 22 24 -338.28 -.10 .00 .00 -.96 -.40
29 24 28 -344.28 -.18 .00 .00 -.98 -.41
31 26 28 348.28 .10 .00 .00 .99 .42
33 26 22 549.60 .. .38 .00 .00 .1.56 .97
35 0 26 897.88 .24 .00 .00 2.55 2.41
JUNCTION NUMBER DEMAND GRADE.LINE ELEVATION PRESSURE
2 .00 547.55 370.00 76.94
4 .00 532.02 370.00 70.21
6 4.00 527.78 365.00 70.54
8 4.00 527.00 368.00 68.90
10 .00 529.96 380.00 64.98
12 4.00 526.73 366.00 69.65
14 4.00 523.96 360.00 71.05
16 4004.00 522.33 360.00 70.34
18 4.00 524.65 356.00 73.08
20 4.00 526.18 360.00 72.01
22 .00 549.38 325.00 97.23
24 6.00 549.48 325.00 97.27
26 .00 549.76 315.00 101.73
28 4.00 549.65 321.00 99.08
THE NET SYSTEM DEMAND = 4038.00
SUMMARY OF INFLOWS(+) AND OUTFLOWS(-) FROM FIXED GRADE NODES
PIPE NUMBER FLOWRATE
1 3140.12
35 897.88
THE NET FLOW INTO THE SYSTEM FROM FIXED GRADE NODES = 4038.00
THE NET FLOW OUT OF THE SYSTEM INTO FIXED GRADE NODES = .00
A SUMMARY OF CONDITIONS SPECIFIED FOR THE NEXT SIMULATION FOLLOWS
THE DEMANDS ARE CHANGED FROM ORIGINAL VALUES BY A FACTOR = 2.00
THE FOLLOWING SPECIFIC DEMAND CHANGES ARE MADE
JUNCTION NUMBER DEMAND
24 4006.00
THE RESULTS ARE OBTAINED AFTER 4 TRIALS WITH AN ACCURACY = .00029
0XD4UM DAY DEMANDS PLUS 4000 GPM FIRE FLOW AT NODE 24
PIPE NO. NODE NOS.
1 0 2
3• 2 4
5 4 6
7 4 10
9 10 12
11 6 8
13 8 12
15 12 14
17 14 16
19 16 18
21 20 18
23 6 20
25 2 22
27 22 24
29 24 28
31 26 28
33 26 22
35 0 26
FLOWRATE
1212.14
28.00
18.25
9.75
9.75
6.14
2.14
7.89
3.89
-.11
4.11
8 .11
1184.14
2349.64
-1656.36
1660.36
1165 .50
2825.86
HEAD LOSS PUMP HEAD MINOR LOSS VELOCITY HL/1000
.42 .00 .00 3.44 4.20
.00 .00 .00 .08 .00
.00 .00 .00 .05 .00
.00 .00 .00 .03 .00
.00 .00 .00 .03 .00
.00 .00 .00 .02 .00
.00 .00 .00 .01 .00
.00 .00 .00 .02 .00
.00 .00 .00 .01 .00
.00 .00 .00 .00 .00
.00 .00 .00 .01 .00
.00 .00 .00 .02 .00
3.12 .00 .00 3.36 4.02
3.58 .00 .00 6.67 14.31
-3.22 .00 .00 -4.70 -7.49
1.88 .00 .00 4.71. 7.52
1.52 .00 .00 3.31 3.91
2.01 .00 .00 8.02 20.14
JUNCTION NUMBER
2
4
6
8
10
12
14
16
18
20
22
24
26
28
DEMAND
.00
.00
4.00
4.00
.00
4.00
4.00
4.00
4.00
4.00
.00
4006.00
.00
4.00
GRADE LINE
549.58
549.58
549.58
549.58
549.58
549.58
549.58
549.58
549.58
549.58
546.46
542.89
547.99
546.11
ELEVATION
370.00
370.00
365.00
368.00
380.00
366.00
360.00
360.00
356.00
360.00
325.00
325.00
315.00
321.00
PRESSURE
77.82
77.82
79.98
78.68
73.48
79.55
82.15
82.15
83.88
82.15
95.97
94.42
100.96
97.55
THE NET SYSTEM DEMAND = 4038.00
SUMMARY OF INFLOWS(+) AND OUTFLOWS(-) FROM FIXED GRADE NODES
PIPE NUMBER FLOWRATE
1 1212.14
35 2825.86
THE NET FLOW INTO THE SYSTEM FROM FIXED GRADE NODES = 4038.00
THE NET FLOW OUT OF THE SYSTEM INTO FIXED GRADE NODES = .00
A SUMMARY OF CONDITIONS SPECIFIED FOR THE NEXT SIMULATION FOLLOWS
THE DEMANDS ARE CHANGED FROM ORIGINAL VALUES BY A FACTOR = 4.00
THE RESULTS ARE OBTAINED AFTER 4 TRIALS WITH AN ACCURACY = .00181
PEAK HOUR DEMANDS
PIPE NO. NODE NOS. FLOWRATE
1 0 2 48.04
3 2 4 56.00
5 4 6 36.49
7 4 10 19.51
9 10 12 19.51
11 6 8 12.27
13 8 12 4.27
15 12 14 15.78
17 14 16 7.78
19 16 18 -.22
21 20 18 8.22
23 6 20 16.22
25 2 22 -7.96
27 22 24 5.22
29 24 28 -6.78
31 26 28 14.78
33 26 22 13.18
35 0 26 27.96
JUNCTION NUMBER DEMAND
2 .00
4 .00
6 8.00
8 8.00
10 .00
12 8.00
14 8.00
16 8.00
18 8.00
20 8.00
22 .00
24 12.00
26 .00
28 8.00
HEAD LOSS PUMP HEAD MINOR LOSS VELOCITY HL/1000
.00 .00 .00 .14 .01
.01 .00 .00 .16 .01
.00 .00 .00 .10 .01
.00 .00 .00 .06 .00
.00 .00 .00 .06 .00
.00 .00 .00 .03 .00
.00 .00 .00 .01 .00
.00 .00 .00 .04 .00
.00 .00 .00 .02 .00
.00 .00 .00 .00 .00
.00 .00 .00 .02 .00
.00 .00 .00 .05 .00
.00 .00 .00 -.02 .00
.00 .00 .00 .01 .00
.00 .00 .00 -.02 .00
.00 .00 .00 .04 .00
.00 .00 .00 .04 .00
.00 .00 .00 .08 .00
GRADE LINE ELEVATION PRESSURE
550.00 370.00 78.00
549.99 370.00 78.00
549.99 365.00 80.16
549.99 368.00 78.86
549.99 380.00 73.66
5.49.99 366.00 79.73
549.99 360.00 82.33
549.99 360.00 82.33
549.99 356.00 84.06
549.99 360.00 82.33
550.00 325.00 97.50
550.00 325.00 97.50
550.00 315.00 101.83
550.00 321.00 99.23
THE NET SYSTEM DEMAND = 76.00
SUMMARY OF INFLOWS(+) AND OUTFLOWS(-) FROM FIXED GRADE NODES
PIPE NUMBER FLOWRATE
1 48.04
35 27.96
THE NET FLOW INTO THE SYSTEM FROM FIXED GRADE NODES = 76.00 THE NET FLOW OUT OF THE SYSTEM INTO FIXED GRADE NODES = .00
DEC 15 2006
ENGINEERING
DEPARTMENT