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HomeMy WebLinkAboutWater System ReportWater System Report for Castlerock Subdivision College Station, Texas September 2006 Revised July 2007 Prepared For: DDH Investments, Inc. 4490 Castlegate Drive College Station, Texas 77845 (979) 690-7250 Prepared By: Civil Development, Ltd. 2033 Harvey Mitchell Parkway South College Station, Texas 77840 (979) 764-7743 GENERAL INFORMATION Location: The Castlerock Subdivision is located on the south side of SH 40 in southern College Station near Arrington Road. Area: Land Use: Phases lA, lC, 2-8 = 73.0 ac. 285 lots Phase 1B = 3.6 ac. 7 lots Single Family Residential (Phases lA, 1 C, 2-8) Commercial A-P (Phase lB) Note: The water system for Castlerock Subdivision was modified from its original design to include the commercial tracts along SH 40. Since the required fire demand for the commercial areas are significantly higher that in residential areas, the system was analyzed with the full fire demand at the hydrant that serves the commercial tracts. WATER SYSTEM ANALYSIS Design Criteria Domestic Demand: Avg. Demand: Peaking Factor: Peak Demand: Design Demand: 100 gpd per capita 2.67 persons per lot 267 gpd per lot 0.185 gpm 4.0 0.74 gpm 1.5 gpm Commercial Demand: 50 gpd per capita 30 persons/acre Peaking Factor 4.0 Fire Flow Demand: 2500 gpm at the single hydrant in Phase 1B (lBFHl) Pipe: PVC DR-14 C909 Roughness Coeff: 150 Hydraulic Software: Haestad Methods Water CAD v.6.0 Primary Water Supply: 24" line along SH 47 Existing City System Pressure Tests Flow Hydrant #: V-064 Flowrate: 1430 Adj. Hydrant#: R-030 Static Pressure: 102 psi (235 ft water) Residual Pressure: 102 psi (assume 100 psi or 231 ft. water) Analysis Summary Criteria Min. Pressure -static (psi) Min. Pressure -fire (psi) Max. Velocity (fps) Max. Length of 6 "pipe (ft) (connected to 2:. 8 "on both ends) Max Length of 6 "pipe (ft) (not connected on both ends Max. Length of 3 "pipe (ft) Required 35 20 12 1500 800 500 Provided 94 .96 73 .72 10.09 1108 256 438 Applicable Exhibits: Exhibit A -City of College Station Fire Flow Test Report Exhibit B -Water System Schematic Layout Conclusion Exhibit C -WaterCAD Model -Domestic Flow Conditions Exhibit D -WaterCAD Model -Fire Flow Conditions The revised water system for Castlerock Subdivision Phases IA, lB, IC and 2-8 meets or exceeds all of the design criteria for the City of College Station. It will provide adequate water pressure and flowrate for both domestic and fire demands. 2 ( 'Uf College Station Utilities ~ Reliable, Affordable, Community Owned 1601 GRAHAM ROAD COLLEGE STATION TEXAS 77845 Date: 19 DECEMBER 2005 Number pages including cover sheet -1 Fax number: 764-7759 Attention: JOE SCHULTZ Company: TEXCON From: Butch Willis Water Wastewater Division Phone: 979-764-3435 Fax: 979-764-3452 FLOW TEST REPORT Nozzle size: 2.5 inch Location: CASTLE GATE AT HWY 40 Flow hydrant number: V-064 Pitot reading: 73 (GPM): 1430 Static hydrant number: R-030 Static PSI: 102 Residual PSI: 102 Exhibit A f1) ll1 rt- :r: '< Q_ ) p ::5 rt- < I C) (]\ ~ D (/) w L D 0 (/) -!>- ...... tD L ...... L C) w D (/) U1 ...... L C) CD -0 d1 -..J CASTLEROCK SUBDIVISION PHASES 1-8 WATER SYSTEM SCHEMATIC LAYOUT CD L C) ...... L ...... C) ...... L C) CD --0 -!>- ...... J> 'l :r: - 2d1 ...... L C) '1J (]\ -0 w (]\ L C) (]\ ("\) L C) ("\) -0 w ("\) w U1 CD 1d9 :i IQ U1 'l :r: ("\) ("\) 'l :r: 'l :r: ~ L C) ("\) w L C) ("\) ,., TL___ _ T _ REVISIONS tf'""~1~~~~ 'tl "wo=.~,=.,..~~'-'=-'='iODCSO!P"==OON~--+.SCA1£,=~-=NO~T =ro~sc=AL£,..-i 2033 Harvey t.1itcheU Parkway South College Slalion, Texas 77840 P.O. Box 11929, Colege Station, Texas 77842 (979) 764-7743 Fax: (979) 764-7759 Exhibit C Castlerock Subdivision, Phases 1-8 Water System Analysis -DOMESTIC FLOW July 13, 2006 Water CAD JUNCTION SUMMARY Computation of Lowest Pressure ~ El<vation ft lAFHl 291 1AFH2 290 1BFH2 297 lBJl 292.5 lCFHl 293 1J02 297 1103 302 1104 303 1107 293 1J08 292 1J09 291 1110 297 lJOl 290 2FH1 283 2FH2 286 2J01 288 2J02 288 2J03 287 2J04 283 2J05 283 2J06 283 2J07 284 3FH1 281 3FH2 282 3J01 282 3J02 273 3J03 280 4J01 279 4J02 280 5FH1 282 5FH2 286 5J01 283 5J02 280 I 6FH1 288 6J01 291 7J01 29 1 I 7J02 294 I 8J01 299 I Calculated Demand Hydraulic Pressure Grade ft psi 0.00 522.1 99.99 7.50 522.1 100.42 4.00 522.49 97.56 0.00 522.49 99.51 7.50 522.19 99.16 0.00 522.5 97.56 0.00 522.5 95.40 0.00 522.49 94.96 36.00 522.16 99.15 42.00 522.09 99.55 0.00 522.11 99.99 0.00 522.2 97.43 0.00 522.52 100.60 0.00 522.06 103.43 0.00 522.07 102.13 6.00 522.07 101.27 6.00 522.06 101.27 22.50 521.41 101.42 0.00 522.06 103.43 0.00 522 .05 103.43 4.50 522 .05 103.42 0.00 522.04 102.99 7.50 522.01 104.27 9.00 522 103.84 3.00 522.03 103.85 25 .50 521.25 107.41 15.00 521.87 104.65 12.00 522 105.14 19.50 521.6 104.53 6.00 522 103.84 57.00 522.01 1 102.11 7.50 522 103.40 9.00 521.95 j 104.68 9.00 1 522.021 101.25 48.00 522.02 99.95 9.001 522.05 1 99.97 40.501 522.09 ' 98 .68 24.00 522.16 96.55 Lowest Pressure = 94.96 Exhibit C P::ige I or I Exhibit D Castlerock Subdivision, Phases 1-8 Revised Water System Analysis -FIRE FLOW July 13, 2007 * Note: Revision includes land use changes in Phases 1 B and 1 C to include commercial lots. Water CAD JUNCTION SUMMARY Computation of Lowest System Pressure Label Elevation ft lAFHl 291 1AFH2 290 1BFH2 297 lBJl 292.5 lCFHl 293 1102 297 1103 302 1J04 303 1107 293 1108 292 1109 291 lJlO 297 lJOl 290 2FH1 283 2FH2 286 2101 288 2102 288 2103 287 2104 283 2105 283 2106 283 2107 284 3FH1 281 3FH2 282 3101 282 3102 273 3103 280 4J01 279 I 4J02 280 5FH1 282 5FH2 286 5101 283 5102 280 6FH1 288 6J01 291 7J01 291 7J02 294 : 8101 299 I I Demand HGL Pressure I ft I psi 0.00 472.40 78.48 7.50 472.20 78.83 2,504.00 472.18 75.79 0.00 472.18 77.74 7.50 472.20 77.53 0.00 473.41 76.33 0.00 473.40 74.16 0.00 473.39 73.72 36.00 472.20 77.53 42.00 472.21 77.97 0.00 472.42 78.49 0.00 472.66 76.00 0.00 474.00 79 .61 0.00 472.22 81.87 0.00 472.32 80.61 6.00 472.20 79.70 6.00 472.20 79.69 22.50 471.55 79.85 0.00 472.22 81.87 0.00 472.23 81.87 4.5 0 472.23 81.87 0.00 472.25 81.45 7.50 472.24 82.74 9.00 472.24 82.31 3.00 472.24 82.31 25.50 471.48 85.87 15.00 472.11 83.12 12.00 472.22 83.60 19.50 471.82 I 82.99, 6.00 472.26 82.31 1 57.00 472.28 80.59 7.50 472.25 81.88 9.00 472.20 1 83.15 9.00 472.33 i 79.75 48.00 472.33 1 78.45 1 9.00 1 472.40 78.48 472.46 1 ' 40.50 1 77.21 472.36 75.01 24.00 Lowest Pressure = 73. 72 Exhibit D l\1 ~c 1 nr I I • Exhibit D Water CAD PIPE SUMMARY Computation of Highest Velocity La e Lengt Diameter Matena Williams C I LJtsc 1arge Velocity b I I , h I i . 1 I Hazen-I D. 1 -----1 --f-t --+-I __ 1_11__ l gpm---+---ft/_s __ lPl I 212 8 PVC I 150.00 468 .2 2.99 lPlO 49 10 PVC 150.00 2469.3 10.09 1P2 251 8 PVC 150.00 -235.6 1.5 1P3 71 6 PVC 150.00 -56.1 0.64 1P4 688 6 PVC 150.00 -56.1 0.64 1P5 157 6 PVC 150.00 14 .1 0.16 1P6 264 8 PVC 150.00 20.8 0.13 1P7 85 8 PVC 150.00 42 .2 0.27 1P8 726 8 PVC 150.00 34.7 0.22 1P9 147 6 PVC 150.00 0.0 0 2Pl 289 8 PVC 150.00 14.2 0.09 2Pl0 281 8 PVC 150.00 -133.5 0.85 2P2 110 6 PVC 150.00 -28.5 0.32 2P3 438 3 PVC 150.00 22 .5 1.02 2P4 264 8 PVC 150.00 48 .7 0.31 2P5 511 8 PVC 150.00 0.0 0 2P6 263 8 PVC 150.00 -48.7 0.31 2P7 49 3 PVC 150.00 4.5 0.2 2P8 267 8 PVC 150.00 -53.2 0.34 2P9 296 8 PVC 150.00 -112.1 0.72 3Pl 86 8 PVC 150.00 -58.9 0.38 3P2 282 8 PVC 150.00 -24.4 0.16 3P3 407 3 PVC 150.00 25.5 1.16 3P4 300 8 PVC 150.00 -8.6 0.06 3P5 186 3 PVC 150.00 -15.0 0.68 4Pl 256 6 PVC 150.00 31.5 0.36 4P2 354 3 PVC 150.00 19.5 0.89 5Pl 300 8 PVC 150.00 -32 .6 0.21 5P2 184 3 PVC 150.00 -9.0 0.41 5P6 176 8 PVC 150.00 -49 .1 0.31 5P7 334 8 PVC 150.00 -55.1 0.35 5P8 937 6 PVC 150.00 21.4 0.24 6Pl 298 8 PVC 150.00 -90.7 0.58 6P2 455 6 PVC 150.00 -2.0 0.02 6P3 469 6 PVC 150.00 46.0 0.52 7Pl 343 8 PVC 150.00 101.7 0.65 7P2 288 8 Pvc l 150.00 -110.7 0.71 7P3 454 8 PVC' 150.00 ' -151.2 0.97 8Pl 536 6 PVC 150.00 81.4 0.92 8P2 57 1 6 PVC 150.00 -5 7.4 0.65 OS3 1199 24 PVC 150.00 2937.5 2.08 OS4 65 8 24 PVC 150.00 468.2 0.33 OS5 967 24 PVC 150.00 468.2 0.33 Exhibit D P~1ge :2 nf 2 Highest Velocity = 10.09