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Home My WebLink AboutWater System ReportWater System Report for Castlegate II Subdivision, Section 204 College Station, Texas September, 2013 Prepared By. Schultz Engineering, LLC TBPE Firm Registration No.12327 2730 Longmire, Suite A College Station, Texas 77845 979.764.3900 , F-12327 SCHULTZ ENdNEEMNG, LLc: General Information Location: The Castlegate H Subdivision, Section 204 is a 18.848-acre residential subdivision being developed immediately southeast of the existing Castlegate H Subdivision, Section 200 in College Station. The Final Plat shows a total of 41 lots in this section. General Note: An analysis was conducted on the entire Castlegate H water system to ensure its ability to serve all lots under fully developed conditions. This analysis was conducted with water line sizes of 8" or less to demonstrate that larger size lines are not necessary even though they may be required by the City for future development in the area. Refer to the report by Phillips Engineering titled " Water System Report For Castlegate 11, Section 200 College Station, Texas", revised April 2011. Two analyses were conducted for Section 204 to demonstrate that it can function as a stand-alone system using water line sizes of 8" or less and the oversized 12" water line design required by the City for future development in the area. Primary Water Supply: Castlegate water service is provided by an existing 8" line on Victoria Avenue and an 8" line that lies in an easement in Section 7 of Castlegate. Section 200 was connected to each of these lines, and both lines will be used to provide looping in all future phases of the development. Section 204 connects to existing 12" & 6" waterlines that were constructed with Castlegate H Section 200 & 202, Land Use: Single family residential Design Criteria/Analysis Primary Water Supply: Existing 12" water line along Toddington Lane, an existing 12" waterline along Tonbridge Drive and an existing 6" water line along Hadleigh Lane. Existing System Pressure Tests: Flow Hydrant - See Exhibit B Flowrate: 1,250 gpm Static Pressure: 88 psi Residual Pressure: 80 psi Exhibits: Exhibit Al — Water Layout — Minimum Required Line Sizes Exhibit A2 — Water Layout — Oversized Lines Exhibit B — College Station Utilities Flow Test Report Exhibit C — Analysis Summary w/Minimum Required Line Sizes Exhibit D — Analysis Summary w/Oversized Lines Fire Flow: 1,000 gpm for Single Family Residential Domestic Use 1.5 gpm per lot for Single Family Residential Section 204 — 41 Lots = 61.5 gpm Existing Development (Section 200) — 35 lots = 52.5 gpm Existing Development (Section 202) — 38 lots = 57.0 gpm Total Domestic Demand = 171 gpm The proposed 12", 8" & 6" water lines are in accordance with the BCS Water Design Guidelines. This report provides the results of the water system analysis under the fire flow and domestic demand requirements, (1171 gpm) which produced the lowest pressure in the system. Water System Summary of Section 204 SummaLy of Calculations w/ Minimum Required Line Sizes Domestic Demand Fire Flow Demand FH 4 Fire Flow Demand FH S Domestic Demand Fire Flow Demand FH 4 Fire Flow Demand FH 5 Conclusion Pressure Min. j 79.6 psi Velocity Max. 0.75 fps Pressure Min. 70.1 psi Velocity Max. 9.49 fps Pressure Min. 70.0 psi Velocity Max. 5.41 fps w/ Oversized Lines Pressure Min. 79.6 psi Velocity Max. 0.76 fps Pressure Min. 70.1 psi Velocity Max. 9.35 fps Pressure Min. 70.0 psi Velocity Max. 5.43 fps As shown above the system exceeds the minimum required pressures of 35 psi for domestic flow and 20 psi for fire flow in both analyses. The maximum velocity of 9.49 fps is less than the required maximum of 12 fps. The proposed 12", 6", 8", and 4" water lines meet or exceed all of the design criteria for the City of College Station. They will provide adequate water pressure, flowrate and velocity for both domestic and fire flow demands. This could also be achieved using an 8" pipe in place of the oversized 12" pipe. EXHIBIT Al WATER LAYOUT- MINIMUM REQUIRED LINE SIZES M S i i i _ z E - sin z i !Zm s K _ 29 Y D25 F n = aNm CZ �• ;. ZM zo ima C� v i Co .� - - i CZ z - mm ,. i { m i tt z - Zm ` m 1 P-7 P-g = FI^ { 1E ay aN - - Az Z I.mm mm !. Iilm m , � I 17 I Im I i I 1 y i I # # I I t fi I I I I i i 1 I i I I I I `ti � t�mw i..•M � 1 I m I I. C -.z.. CALL IAF.Ai-L AG Q EXHIBIT A2 WATER LAYOUT -OVERSIZED LINES MR. #t g a' ; V � f i m _ _ am z � I m ! 2i I z I�DI� z0 Gn z mm mm I x s 1 t� c, fr, N 0 a t C O z n mm - .� .. ., N X p CE m I I m Dy _ mm f cw j F�^ Dy - Ex m t iDzz I I Fm fill Cz if T i mm mm 1. I III mm }} 4 I I I � r 1 I I I i I 1 I I I j 11 I ° l I m` I I a I [ I I I I i I f I I I I m I I a J 1 c I O alo z i. 3 M-1 Mmi pm EXHIBIT B COLLEGE STATION UTILITIES FLOW TEST REPORT EXHIBIT B College Station Utilities Reliable, Affordable, Community Owned Date test completed Wednesday August 29, 2012 Time completed- 10:30 A.M. Test completed by Floyd Anderson Witness Justin Tamulin { FLOW HYDRANT Location Castle Gate Ph. 2 Section 201 Nozzle size 2.5 Hydrant number V-095 Picot reading in PSI 55 Flory in G.P.M. 1250 AM"' Pit ;R fif.''+y4),` l vffiLk:'2w`n, wx i��E STATIC HYDRANT Location Castle Gate Ph. 2 Section 201 Hydrant number V-096 Static PSI 88 Residual P1 8`0 !'}E Y�€i'irj71f _'.iZ'`E}t 'd"titx3'',Jti :,z!I;.i�3!77!`.,�..�'�'xail��Ua ;` "��'tv3�ju'�3f�11 Comments For Initial EXHIBIT C PIPE & JUNCTION ANALYSIS - MINIMUM REQUIRED LINE SIZES Exhibit C WaterCAD Analysis Summary w/ Minimum Required Line Sizes Pipe Analysis - Domestic Demand Pipe Number Length (ft) Size (in) Material Hazen- C Williams(gpm) Flow Velocity (ft/s) P-1 482 8 PVC 150 0 0 P-2 644 8 PVC 150 -27 0.17 P-4 44 8 PVC 150 15 0.09 P-5 229 8 PVC 150 7 0.05 P-6 314 12 PVC 150 0 0 P-7 313 8 PVC 150 2 0.01 P-8 259 8 PVC 150 -15 0.09 P-9 351 8 PVC 150 0 0 P-10 357 8 PVC 150 118 0.75 P-11 278 8 PVC 150 77 0.49 P-12 888 6 PVC 150 23 0.26 P-14 927 6 PVC 150 41 0.46 P-15 663 6 PVC 150 12 0.13 P-res 20 12 PVC 150 177 0.5 P-17 31 6 PVC 150 23 0.26 P-18 630 6 PVC 150 11 0.12 P-21 29 12 PVC 150 -59 0.17 P-22 938 12 PVC 150 -59 0.17 WaterCAD Analysis Summary w/ Minimum Required Line Sizes Junction Analysis - Domestic Demand Junction Elevation junction Demand (gpm) Pressure (psi) 1-1 324.5 0 83.7 J-2 328 12 82.1 J-3 334 18 79.6 J-4 321 18 85.2 FH5 327.S 7 82.4 1-6 326 18 83 1-7 323.5 12 84.1 J-8 323 27 84.3 J-9 328 17 82.2 1-10 333 0 80 J-11 315.5 18 87.6 1-12 319 18 86.1 _ FH4 327.91 12 82.2 FH2 333.61 0 79.7 Exhibit C WaterCAD Analysis Summary w/ Minimum Reauired Line Sizes Pipe Analysis - Fire Flow Demand (FH-4) Pipe Number Length (ft) Size (in) Material Hazen- Williams C Flow (gpm) Velocity (ft/s) P-1 482 8 PVC_ 150 0 0 P-2 644 8 PVC 150 -176 1.12 P-4 44 8 PVC 150 164 1.05 P-5 229 8 PVC 150 156 1 P-6 314 _ 12 PVC 150 -37 0.1 P-7 313 8 PVC 150 240 1.53 P-8 259 8 PVC ISO -398 _ 2.54 P-9 351 8 PVC 150 0 0 P-10 357 8 PVC 150 843 5.38 P-11 278 8 PVC 150 610 3.89 P-12 888 6 PVC _ 150 215 2.44 P-14 927 6 PVC 150 316 3.59 P-15 663 6 PVC 150 49 0.55 P-res 20 12 PVC 150 1,177 3.34 P-17 31 6 PVC 150 837 _ 9.49 P-18 630 6 PVC 150 -175 1.99 P-21 29 12 PVC 150 -592 1.68 P-22 1 938 1 12 1 PVC 150 -592 1.68 WaterCAD Analysis Summary w/ Minimum Required Line Sizes Junction Analysis - Fire Flow Demand (FH-4) Junction Elevation junction Demand (gpm) Pressure (psi) J-1 324.5 0 74.1 J-2 328 12 72.5 J-3 334 18 70.1 1-4 321 18 76 FHS 327.5 7 72.8 J-6 326 18 _ 73.4 J-7 323.5 12 _ 74.4 J-8 323 27 74.7 J-9 328 17 22.4 1-10 333 0 70.5 1-11 315.5 18 80.7 J-12 319 18 77.6 FH4 327.91 1,012 71.9 FH2 333.61 0 70.3 Exhibit C WaterCAD Analysis Summary w/ Minimum Required Line Sizes Pipe Analysis - Fire Flow Demand (FH-5) Pipe Number Length (ft) Size (in) Material Hazen- Williams C Flow (gpm) Velocity (ft/s) P-1 482 8 PVC 150 0 0 P-2 644 8 PVC 150 -571 3.65 P-4 44 8 PVC 150 559 3.57 P-5 229 8 PVC 150 -448 2.86 P-6 314 _ 12 PVC _ 150 -227 0.64 P-7 313 8 PVC 150 47 _ 0.3 P-8 259 8 PVC 150 -26 0.17 P-9 351 8 0 0 P-10 357 8 847 5.41 P-11 278 8 634 4.05 P-12 888 6 !PVCr15 195 2.21 P-14 927 6 312 3.54 P-15 663 6 239 2.71 P-res 20 12 1,177 3.34 P-17 31 6 PVC 150 252 2.85 P-18 630 6 PVC 150 240 2.72 P-21 29 12 PVC 150 -616 _ 1.75 P-22 938 12 PVC 150 -516 1.75 WaterCAD Analysis Summary w/ Minimum Required Line Sizes Junction Analysis - Fire Flow Demand (FH-5) Junction Elevation junction Demand (gpm) Pressure (psi) J-1 324.5 0 72.7 1-2 328 12 11.2 J-3 334 18 70 1-4 321 18 76 FH5 327.5 1,007 71.4 1-6 326 18 _ 72.3 J-7 323.5 12 73 4 J-8 323 27 74.8 1-9 328 17 72.6 J-10 333 0 70.4 1-11 315.5 18 80.7 J-12 319 18 77.6 FH4 327.91 12 72.6 FH2 333.61 0 70.2 PIPE & JUNCTION ANALYSIS - OVERSIZED LINES Exhibit D WaterCAD Analysis Summary w/ DVertilPfJ i inPc Pipe Analysis - Domestic Demand Pipe Number Length (ft) Size (in) Material Hazen- Williams C Flow (gpm) Velocity (ft/s) P-1 482 12 PVC 150 0 0 P-2 644 12 PVC 150 38 0.11 P-4 44 12 PVC 150 26 0.07 P-5 229 12 PVC 150 18 0.05 P-6 314 12 PVC 150 5 0.01 P-7 313 8 PVC 150 7 0.04 P-8 _ 259 8 PVC 150 -4 0.03 P-9 351 8 PVC 150 0 0 P-10 357 8 PVC 150 118 0.76 P-11 278 8 PVC 150 78 0.5 P-12 888 6 PVC 150 22 0.26 P-14 927 6 PVC 150 41 0.46 P-15 663 6 PVC 150 7 0.08 P-res 20 12 PVC 150 177 0.5 P-17 31 6 PVC 150 17 0.2 P-18 630 6 PVC 150 5 0.06 P-21 29 12 PVC 150 -60 0.17 P-22 938 12 PVC 150 -60 0.17 WaterCAD Analysis Summary w/ Oversized Lines Junction Analysis - Domestic Demand Junction Elevation junction Demand (gpm) Pressure (psi) J-1 324.5 0 83.7 J-2 328 12 82.1 J-3 334 18 79.6 J-4 321 18 85.2 FH5 327.5 7 82.4 1-6 326 18 83 J-7 323.5 12 84.1 1-8 323 27 84.3 J-9 328 17 82.2 J-10 333 0 80 1-11 315.5 18 87.6 J-12 319 18 86.1 FH4 327.91 12 82.2 FH2 333.61 0 79.7 Exhibit D WaterCAD Analysis Summary w/ Oversized Lines Pipe Analysis - Fire Flow Demand (FH-4) Pipe Number Length (ft) Size (in) Material Hazen- Williams C Flow (gpm) Velocity (ft/s) P-1 482 12 PVC 150 0 0 P-2 644 12 PVC 150 -231 0.65 P-4 44 12 PVC _ 150 219 0.62 P-5 _ 229 12 _ PVC 150 211 0.6 P-6 314 12 PVC _ 150 5 0.01 P-7 313 8 PVC _ 150 278 1.78 P-8 259 8 PVC 150 _ -350 2.24 P-9 351 8 PVC 150 0 0 P-10 357 8 PVC 150 847 5.4 P-11 278 8 PVC 150 617 3.94 P-12 888 6 PVC 150 212 2.4 P-14 927 6 PVC 150 312 3.54 PAS 663 6 PVC 150 7 0.08 P-res 20 12 PVC 150 1,177 _ 3.34 P-17 31 6 PVC _ 150 824 9.35 P-18 330 6 PVC 150 -188 2.14 P-21 29 12 PVC _ 150 -599 1.7 P-22 938 12 _ PVC 1 _ 150 -599 1.7 WaterCAD Analysis Summary w/ Oversized Lines Junction Analysis - Fire Flow Demand (FH-4) Junction Elevation junction Demand (gpm) Pressure (psi) J-1 324.5 0 74.1 J-2 328 12 72.6 J-3 334 18 00.1 14 321 18 76 FH5 327.5 7 72.8 J-6 326 18 73.5 J-7 323.5 12 74.6 J-8 323 27 74.8 J-9 328 17 72.4 J-10 333 0 70.5 J-11 315.5 18 80.7 1-12 319 18 77.6 FH4 327.91 1,012 72 FH2 333.61 0 70.2 Exhibit D WaterCAD Analysis Summary w/ 0%,Pmi,ed I in Pipe Analysis - Fire Flow Demand (FH-5) Pipe Number Number Length (ft) Size (in) Material Hazen - C Flow (gpm) Velocity (ft/s) 12 PVC 150 0 0 12 PVC 150 772 2.19 12 PVC 150 760 2.16 T------ 12 PVC 150 -247 0.7 P-6 12 PVC 150 -131 0.37 8 PVC 150 138 0.88 8 PVC 150 167 1.07 P-9 351 8 PVC 150 0 0 P-10 357 8 PVC 851 5.43 Pod 278 8 PVC _1S0 1S0 641 4.09 P-12 888 6 PVC 150 192 2.17 P-14 927 6 PVC 150 308 3.5 P-is 663 6 PVC 1S0 143 1.62 P-res 20 12 PVC 150 1177 _ 3.34 P-17 31 6 PVC 150 147 1.66 P-18 630 6 PVC 150 135 1.53 P-21 29 12 PVC 150 -623 _ 1.77 P-22 938 12 PVC 150 -623 1.77 WaterCAD Analysis Summary w/ Oversized Lines Junction Analysis - Fire Flow Demand (FH-51 Junction Elevation unc ion Demand (gpm) Pressure (psi) 1-1 324.5 0 73.8 J-2 328 12 72.2 J-3 334 18 70 J-4 321 18 75.9 FHS 327.5 1,007 72,4 J-6 326 18 73.1 1-7 323.5 12 74.2 J-8 323 27 74.8 J-9 328 17 72.6 1-10 333 0 70.4 J-11 315.5 18 80.7 J-12 319 18 77.5 FH4 327.91 12 72.6 FH2 333.61 0 70.2 College Station Utilities Reliable, Affordable, Community Owned Date test completed Thursday May 14, 2015 Time completed 10:45 A.M. Test completed by Justin Tamplin Witness Keevan Williams and H Location Nozzle size Hydrant number Pitot reading in PSI Flow in G.P.M. number PSI Castlegate 11 Sec 204 2.5 V-121 60 Castlegate 11 Sec 204 V-120 80 Residual PSI 76 Comments Initial