HomeMy WebLinkAboutWater System AnalysisWATER SYSTEM ANALYSIS
FOR
SHENANDOAH SUBDIVISION
PHASES 10 - 17
MAY 2004
SUBMITTED BY:
MCCLURE & BROWNE ENGINEERING/ SURVEYING, INC.
1008 Woodcreek Drive, Suite 103 • College Station, Texas 77845
WATER SYSTEM ANALYSIS
FOR
SHENANDOAH SUBDIVISION, PHASES 10-17
General Information
Shenandoah Subdivision, Phases 10-17 encompasses approximately 76 acres of
land in southern College Station. It is located on the south side of Barron Road near its
intersection with Newport Lane. There are 260 single-family residential lots planned for
the eight phases. The area surrounding the site is rapidly developing with Alexandria
subdivisions on the north, older phases of Shenandoah to the east, Reatta Meadows
subdivision being constructed on the west, and undeveloped phases of the Castlegate
Subdivision on the south.
Water System Analysis
The City of College has a 12" water line that serves the Shenandoah Subdivision
and runs the entire length of Southern Plantation Drive from SH 6 eastward to it terminus
just east of Alexandria Drive. This line is looped to an 18" line along Barron Road in
several locations. These two lines will serve as the primary water sources for Phases 10-
17. Since two previous phases (8 & 9) of the subdivision are also served by these
primary water sources, the analysis that follows includes the pipe network that serves
those phases as well. The computer model from those phases was expanded to
incorporate Phases 10 through 17.
Computer modeling of the proposed water system was conducted using the
Kentucky Pipe Network Analysis (KYPIPES). A schematic drawing of the system in
Phases 10-17 is shown in Exhibit A. Domestic water demand was estimated assuming 3
gpm per residential lot. Two fire hydrants flowing at a rate of 750 gpm each were added to
the model at hydraulically remote locations to test the system under fire flow conditions.
These were located at Nodes 29 and 31 in Exhibit A.
Crews from the city's Public Utilities Department conducted pressure tests on the
existing line along Southern Plantation Drive in three locations. The results of these
tests are given in Exhibits B, C, D and E. The residual pressures from these tests were
used as the starting pressures (fixed grade nodes) for the KYPIPE model.
A printout from the computer model for Phases 8-17 under fully developed
conditions is provided in Exhibit F. The lowest pressure under fire flow conditions was
61 psi at Node 30, which is at the end of a cul-de-sac just beyond one of the flowing
hydrants. This is still well above the minimum pressure of 20 psi required by the City of
College Station and TCEQ. Therefore, one can conclude that the proposed system is
adequate to provide the pressure and flowrates for this phase of the subdivision.
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EXHIBIT A
WATER UNE SCHEMATIC
SHEMNDOAH SUMMSION
PHASES 10-17
0204-SL-EXHI&DWO
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Ex. 8" WA !1i
'Lambsburg Lane
1__ Q
u5/1Z/ZVUS 1u:14 VAb U79 754 3452 COLLEGE STATION PUB.UTL. UP02
Exhibit B
Flow Test Report
Date 1_2
190 A.M - P.M.
Test made by :
Location _
Purpose of test
Representative
Witness :
Flow hydrant number. aQ ^Noate size :?y
Pilot reading :
Static hydrant number
Static :
Residual : P.S.I.
Remarks :
~J
Fixed Grade Node Calculations
Connecting to Node 1
Assume: Elevation= 286 ft.
Residual Pressure = 95 psi
HGL = 286 + (95 psi /.433) = 505 ft.
u
vv. ar. rvvv .d a: a[av -10 9V'2 V-10 A. %IVLL.GU6 .11A11U1V ruri.U1L. L(ij UU4
Exhibit C
o/z
/ Flow Test Report
Date 3 Time /9,• VO 4- P_M_
Test made by : _ -
Location . Z
Purpose of test :
Representative :
Witness :
Flow hydrant number. Nozzle sire :
Pilot ceading : __9~~
Static hydrant number :
/W
Static : P.S.[. Residual : w P.S.I.
Remarks
Fixed Grade Node Calculations
Connecting to Node 6
Assume: Elevation = 296 ft.
Residual Pressure = 80 psi
.!v
fIGL = 296 + (80 psi /.433) = 481 ft.
..vuuu~nu vigil ivl~ i~~✓.~iL. ti~-J VVV
~D3s~
Exhibit D
ow TesF-Report
Date 0/ `/-2 ' 03 Time ~ z. A_M - P_M_
Test made by : -
Location _ ,P
Purpose of test :
Representative : - -
Witness . . - l
Flory hydrant number. - ~ NozVe size -
Pitot reading : G_P-N►, :
Static hydrant number : , S - d ~l fj
Static:_P.S.1. Residual : P.S.I.
Remarks :
Fixed Grade Node Calculations
Connecting to Node 28
Assume: Elevation = 296 ft.
Residual Pressure = 80 psi
HGL = 296 + (80 psi /.433) = 481 ft.
Exhibit E
Flow Test Report
Date I I-. I ~ - q -I Time q: ~l - P.M.
Test made by 'f
j fl X71 i) to )sl
Location: pAfro n~
Purpose of test : I 0 w 1 esf
r, 1
Representative : L, "t V C~ C
witness : S I .P-niz -
Flow hydrant number: Q -'+q Nozzle size : ~S~
Pilot reading : q 0 G.P.M.: 11-7-5
Static hydrant number : 9-7G
Static : I o g . P.S.I. Residual : f Q 8 P.S.I.
Remarks :
Fixed Grade Node Calculations
Connecting to Node 66
Assume: Elevation = 282 ft.
Residual Pressure = 108 psi
HGL = 282 + (108 psi /.433) = 531 ft.
Exhibit F
KYPIPES Model for Shenandoah Subdivision, Phases 10-17
* * * * * * * * * * * * * * K Y P I P E * * * * * * * * * * * * * *
* University of Kentucky Hydraulic Analysis Program
* for the Distribution of Pressure and Flows in Pipe Network Systems
* FORTRAN VERSION - 3.40 (01/02/91)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
DATE: 4/ 6/2004
TIME: 13:59:39
INPUT DATA FILENAME shenall.dat
TABULATED OUTPUT FILENAME shenall.out
S U M M A R Y O F O R I G I N A L D A T A
U N I T S S P E C I F I E D
FLOWRATE IS EXPRESSED IN GPM AND PRESSURE IN PSIG
P I P E
L I N E
A N
D P U
M P D A
T A
PIPE
NO. NODE
NOS.
LENGTH
DIAMETER
ROUGHNESS
MINOR LOSS K FIXED GRADE
(FEET)
(INCHES)
1
0
1
290.0
6.0
150.0
2.30 505.00
2
1
2
320.0
6.0
150.0
2.30
3
2
3
350.0
6.0
150.0
.30
4
1
4
300.0
6.0
150.0
1.70
5
4
5
790.0
6.0
150.0
3.10
6
5
6
330.0
8.0
150.0
.50
7
0
6
250.0
8.0
150.0
3.10 481.00
8
6
7
540.0
6.0
150.0
2.30
9
7
8
310.0
6.0
150.0
.80
10
8
9
75.0
6.0
150.0
2.30
11
9
10
320.0
6.0
150.0
.30
12
8
11
350.0
6.0
150.0
1.60
13
11
12
510.0
6.0
150.0
2.60
14
5
12
240.0
8.0
150.0
.80
15
12
13
290.0
8.0
150.0
.80
16
13
14
400.0
6.0
150.0
2.30
17
14
15
240.0
6.0
150.0
.30
18
13
16
450.0
8.0
150.0
.80
19
16
17
190.0
8.0
150.0
.30
20
16
18
620.0
8.0
150.0
2.30
21
18
19
350.0
6.0
150.0
3.50
22
19
20
265.0
6.0
150.0
.30
23
18
21
435.0
8.0
150.0
1.10
24
21
22
170.0
6.0
150.0
2.30
25
21
23
300.0
8.0
150.0
1.70
26
23
24
200.0
8.0
150.0
1.40
27
24
25
325.0
8.0
150.0
.80
28
25
26
280.0
8.0
150.0
.80
29
26
27
280.0
8.0
150.0
.80
Exhibit F
KYPIPES Model for Shenandoah Subdivision, Phases 10-17
30
27
28
140.0
8.0
150.0
3.10
31
22
29
552.0
6.0
150.0
.50
32
29
30
456.0
3.0
150.0
.00
33
23
31
636.0
6.0
150.0
1.90
34
31
32
276.0
3.0
150.0
.00
35
24
33
564.0
6.0
150.0
2.80
36
33
34
288.0
3.0
150.0
.00
37
25
35
408.0
6.0
150.0
2.60
38
26
36
396.0
6.0
150.0
2.90
39
35
36
288.0
6.0
150.0
3.90
40
35
37
276.0
6.0
150.0
.30
41
37
38
324.0
3.0
150.0
.80
42
37
39
288.0
6.0
150.0
4.20
43
39
40
480.0
3.0
150.0
2.10
44
39
42
300.0
6.0
150.0
.60
45
42
43
600.0
3.0
150.0
2.30
46
42
44
120.0
6.0
150.0
4.40
47
28
44
684.0
12.0
150.0
.80
48
44
45
588.0
12.0
150.0
1.30
49
45
46
264.0
8.0
150.0
.80
50
46
47
36.0
6.0
150.0
3.90
51
47
48
444.0
3.0
150.0
.50
52
46
49
312.0
8.0
150.0
.80
53
49
50
36.0
6.0
150.0
3.90
54
50
51
444.0
3.0
150.0
.50
55
49
52
312.0
8.0
150.0
.80
56
52
53
36.0
6.0
150.0
3.90
57
53
54
444.0
3.0
150.0
.50
58
52
55
312.0
8.0
150.0
.80
59
55
56
36.0
6.0
150.0
3.90
60
56
57
444.0
3.0
150.0
.50
61
55
58
312.0
8.0
150.0
.80
62
58
59
36.0
6.0
150.0
3.90
63
59
60
444.0
3.0
150.0
.50
64
61
58
144.0
8.0
150.0
.50
65
27
41
396.0
3.0
150.0
2.30
66
0
61
4475.0
18.0
120.0
3.20
67
0
28
50.0
12.0
150.0
.50
A SUCCESSFUL GEOMETRIC VERIFICATION HAS BEEN COMPLETED
J U N C T I O N N O D E D A T A
JUNCTION NUMBER
DEMAND
ELEVATION
CONNECTING
PIPES
1
18.00
288.00
1
2
4
2
30.00
292.00
2
3
3
39.00
296.00
3
4
39.00
292.00
4
5
5
36.00
303.00
5
6
14
6
.00
297.00
6
7
8
7
57.00
299.00
8
9
8
24.00
296.00
9
10
12
9
.00
297.00
10
11
10
39.00
302.00
11
11
60.00
295.00
12
13
12
.00
302.00
13
14
15
13
.00
298.00
15
16
18
14
30.00
294.00
16
17
15
30.00
290.00
17
531.00
481.00
Exhibit F
KYPIPES Model for Shenandoah Subdivision, Phases 10-17
16
.00
290.00
18
19
20
17
.00
287.00
19
18
30.00
285.00
20
21
23
19
24.00
289.00
21
22
20
33.00
292.00
22
21
12.00
287.00
23
24
25
22
3.00
289.00
24
31
23
.00
292.00
25
26
33
24
.00
292.00
26
27
35
25
18.00
292.00
27
28
37
26
18.00
293.00
28
29
38
27
18.00
295.00
29
30
65
28
.00
295.00
30
47
67
29
804.00
283.00
31
32
30
30.00
284.00
32
31
807.00
287.00
33
34
32
24.00
286.00
34
33
54.00
291.00
35
36
34
21.00
287.00
36
35
27.00
299.00
37
39
40
36
24.00
300.00
38
39
37
18.00
297.00
40
41
42
38
27.00
292.00
41
39
9.00
300.00
42
43
44
40
45.00
290.00
43
41
24.00
300.00
65
42
15.00
300.00
44
45
46
43
54.00
288.00
45
44
.00
298.00
46
47
48
45
.00
294.00
48
49
46
.00
299.00
49
50
52
47
.00
299.00
50
51
48
48.00
302.00
51
49
.00
307.00
52
53
55
50
.00
307.00
53
54
51
48.00
307.00
54
52
.00
311.00
55
56
58
53
.00
311.00
56
57
54
48.00
311.00
57
55
.00
318.00
58
59
61
56
.00
318.00
59
60
57
48.00
316.00
60
58
.00
320.00
61
62
64
59
.00
320.00
62
63
60
48.00
320.00
63
61
.00
314.00
64
66
O U T P U T O P T I O N D A T A
OUTPUT SELECTION: ALL RESULTS ARE OUTPUT EACH PERIOD
S Y S T E M C O N F I G U R A T I O N
THIS SYSTEM HAS 67 PIPES WITH 61 JUNCTIONS , 3 LOOPS AND 4 FGNS
Exhibit F
KYPIPES Model for Shenandoah Subdivision, Phases 10-17
S I M U L A T I O N R E S U L T S
THE RESULTS ARE OBTAINED AFTER 4 TRIALS WITH AN ACCURACY = .00190
S I M U L A T I O N D E S C R I P T I O N (L A B E L)
Shenandoah Subdivision Phases 8 through 17
Res.Demand=3 GPM/Residence Fire Flow = 2 @ 750 GPM (Nodes 29 & 31)
April 2004 McCLURE ENGINEERING
P I P E L I N E R E S U L T S
PIPE NO.
NODE
NOS.
FLOWRATE
HEAD LOSS
PUMP HEAD
MINOR LOSS
VELOCITY
HL/1000
1
0
1
598.13
6.37
.00
1.64
6.79
21.96
2
1
2
69.00
.13
.00
.02
.78
.40
3
2
3
39.00
.05
.00
.00
.44
.14
4
1
4
511.13
4.92
.00
.89
5.80
16.42
5
4
5
472.13
11.20
.00
1.38
5.36
14.17
6
5
6
-334.55
-.61
.00
-.04
-2.14
-1.84
7
0
6
551.30
1.16
.00
.60
3.52
4.65
8
6
7
216.74
1.81
.00
.22
2.46
3.35
9
7
8
159.74
.59
.00
.04
1.81
1.90
10
8
9
39.00
.01
.00
.01
.44
.14
11
9
10
39.00
.04
.00
.00
.44
.14
12
8
11
96.74
.26
.00
.03
1.10
.75
13
11
12
36.74
.06
.00
.01
.42
.13
14
5
12
770.69
2.08
.00
.30
4.92
8.65
15
12
13
807.43
2.73
.00
.33
5.15
9.43
16
13
14
60.00
.12
.00
.02
.68
.31
17
14
15
30.00
.02
.00
.00
.34
.09
18
13
16
747.43
3.68
.00
.28
4.77
8.17
19
16
17
.00
.00
.00
.00
.00
.00
20
16
18
747.43
5.07
.00
.81
4.77
8.17
21
18
19
57.00
.10
.00
.02
.65
.28
22
19
20
33.00
.03
.00
.00
.37
.10
23
18
21
660.43
2.83
.00
.30
4.22
6.50
24
21
22
837.00
6.96
.00
3.22
9.50
40.92
25
21
23
-188.57
-.19
.00
-.04
-1.20
-.64
26
23
24
-1019.57
-2.91
.00
-.92
-6.51
-14.53
27
24
25
-1094.57
-5.38
.00
-.61
-6.99
-16.57
28
25
26
-828.04
-2.77
.00
-.35
-5.28
-9.88
29
26
27
-934.52
-3.46
.00
-.44
-5.96
-12.36
30
27
28
-976.52
-1.88
.00
-1.87
-6.23
-13.41
31
22
29
834.00
22.44
.00
.70
9.46
40.65
32
29
30
30.00
1.15
.00
.00
1.36
2.52
33
23
31
831.00
25.68
.00
2.62
9.43
40.38
34
31
32
24.00
.46
.00
.00
1.09
1.66
35
24
33
75.00
.26
.00
.03
.85
.47
36
33
34
21.00
.37
.00
.00
.95
1.30
37
25
35
-284.53
-2.26
.00
-.42
-3.23
-5.55
38
26
36
88.48
.25
.00
.05
1.00
.64
39
35
36
-64.48
-.10
.00
-.03
-.73
-.35
40
35
37
-247.05
-1.18
.00
-.04
-2.80
-4.27
41
37
38
27.00
.67
.00
.02
1.23
2.07
42
37
39
-292.05
-1.68
.00
-.72
-3.31
-5.82
-
Exhibit F
KYPIPES Model for Shenandoah
Subdivision, Phases
10-17
43
39
40
45.00
2.56
.00
.14
2.04
5.33
44
39
42
-346.05
-2.39
.00
-.14
-3.93
-7.97
45
42
43
54.00
4.48
.00
.21
2.45
7.47
46
42
44
-415.05
-1.34
.00
-1.52
-4.71
-11.16
47
28
44
-787.04
-.85
.00
-.06
-2.23
-1.25
48
44
45
-1202.10
-1.61
.00
-.23
-3.41
-2.74
49
45
46
-1202.10
-5.20
.00
-.73
-7.67
-19.71
50
46
47
48.00
.01
.00
.02
.54
.21
51
47
48
48.00
2.67
.00
.04
2.18
6.01
52
46
49
-1250.10
-6.61
.00
-.79
-7.98
-21.19
53
49
50
48.00
.01
.00
.02
.54
.21
54
50
51
48.00
2.67
.00
.04
2.18
6.01
55
49
52
-1298.10
-7.09
.00
-.85
-8.28
-22.72
56
52
53
48.00
.01
.00
.02
.54
.21
57
53
54
48.00
2.67
.00
.04
2.18
6.01
58
52
55
-1346.10
-7.58
.00
-.92
-8.59
-24.30
59
55
56
48.00
.01
.00
.02
.54
.21
60
56
57
48.00
2.67
.00
.04
2.18
6.01
61
55
58
-1394.10
-8.09
.00
-.98
-8.90
-25.93
62
58
59
48.00
.01
.00
.02
.54
.21
63
59
60
48.00
2.67
.00
.04
2.18
6.01
64
61
58
1442.10
3.98
.00
.66
9.20
27.61
65
27
41
24.00
.66
.00
.04
1.09
1.66
66
0
61
1442.10
3.60
.00
.16
1.82
.80
67
0
28
189.47
.00
.00
.00
.54
.09
J U N C T I O N N 0 D E R E S U L T S
JUNCTION NUMBER
DEMAND
GRADE LINE
ELEVATION
PRESSURE
1
18.00
496.99
288.00
90.56
2
30.00
496.84
292.00
88.76
3
39.00
496.79
296.00
87.01
4
39.00
491.17
292.00
86.31
5
36.00
478.60
303.00
76.09
6
.00
479.24
297.00
78.97
7
57.00
477.22
299.00
77.23
8
24.00
476.58
296.00
78.25
9
.00
476.57
297.00
77.81
10
39.00
476.52
302.00
75.63
11
60.00
476.29
295.00
78.56
12
.00
476.22
302.00
75.50
13
.00
473.16
298.00
75.90
14
30.00
473.01
294.00
77.57
15
30.00
472.99
290.00
79.30
16
.00
469.19
290.00
77.65
17
.00
469.19
287.00
78.95
18
30.00
463.31
285.00
77.27
19
24.00
463.19
289.00
75.48
20
33.00
463.16
292.00
74.17
21
12.00
460.18
287.00
75.05
22
3.00
450.01
289.00
69.77
23
.00
460.41
292.00
72.98
24
.00
464.24
292.00
74.64
25
18.00
470.23
292.00
77.23
26
18.00
473.34
293.00
78.15
27'
18.00
477.25
295.00
78.97
28
.00
480.99
295.00
80.60
29
804.00
426.87
283.00
62.34
30
30.00
425.73
284.00
61.41 * Lowest Pressure
Exhibit F
KYPIPES Model for Shenandoah Subdivision, Phases 10-17
31
807.00
432.11
287.00
62.88
32
24.00
431.65
286.00
63.11
33
54.00
463.94
291.00
74.94
34
21.00
463.57
287.00
76.51
35
27.00
472.91
299.00
75.36
36
24.00
473.04
300.00
74.99
37
18.00
474.13
297.00
76.75
38
27.00
473.44
292.00
78.62
39
9.00
476.52
300.00
76.49
40
45.00
473.82
290.00
79.66
41
24.00
476.54
300.00
76.50
42
15.00
479.05
300.00
77.59
43
54.00
474.36
288.00
80.75
44
.00
481.91
298.00
79.69
45
.00
483.75
294.00
82.23
46
.00
489.69
299.00
82.63
47
.00
489.66
299.00
82.62
48
48.00
486.96
302.00
80.15
49
.00
497.09
307.00
82.37
50
.00
497.06
307.00
82.36
51
48.00
494.36
307.00
81.19
52
.00
505.03
311.00
84.08
53
.00
505.01
311.00
84.07
54
48.00
502.30
311.00
82.90
55
.00
513.53
318.00
84.73
56
.00
513.50
318.00
84.72
57
48.00
510.80
316.00
84.41
58
.00
522.60
320.00
87.79
59
.00
522.58
320.00
87.78
60
48.00
519.87
320.00
86.61
61
.00
527.24
314.00
92.40
S U M M A R Y O F I N F L O W S A N D O U T F L O W S
INFLOWS INTO THE SYSTEM FROM FIXED GRADE NODES
OUTFLOWS FROM THE SYSTEM INTO FIXED GRADE NODES
PIPE NUMBER FLOWRATE
1 598.13
7 551.30
66 1442.10
67 189.47
NET SYSTEM INFLOW = 2781.00
NET SYSTEM OUTFLOW = .00
NET SYSTEM DEMAND = 2781.00
D A T A C H A N G E S F O R N E X T S I M U L A T I O N
D E M A N D C H A N G E S
DEMANDS ARE CHANGED FROM ORIGINAL VALUES BY A FACTOR = 1.00
L ~