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Home My WebLink AboutFire Flow ReportJosh Norton, EIT City of College Station Planning & Development Services P.O. Box 9960 College Station, TX 77840 MITCHELL MM MORGAN RE: Culpepper Plaza Redevelopment Fireflow Report Dear Josh: November 10, 2006 Below is the water ana lysis for the Culpepper Plaza Redevelopment. The largest area between firewall s will be Kohl 's department store, encompassing approximately 68, 77 5 square feet. Kohl's will be equipped with an automatic sprinkler system and constructed of building type ll lB, requiring a fireflow of 2750 gpm as required by the 2000 International Fire Code with a 50% sprinkler reduction . An excerpt of the 2000 International Fire Code is provided as Exhibit 1. The updated City of College Station water system MikeNET model was checked against hydrant flow tests near Culpepper Plaza. Please see Exh ibit 2A for flow test results. At this time the exact locations of the flow and static hydrants are not know, so a comparison was made between the model results in the general vicinity and the flow tests. See Exhibit 2B for static conditions model results and Exhibit 2C for residual conditions model results. It was found that model results were similar to those found by flow test differential between static and residual conditions, but overall the model showed pressures about 20 psi higher for both conditions. Because of this discrepancy pressures under fireflow conditions will be assumed adequate over 40 psi . Us ing the updated City of College Station water system MikeNET model, flows and pressures were calculated in the adjacent li nes. Please see Exhibit 3 for model results. It was found that a new eight inch (8") waterline and hydrant as well as the existing waterlines and hydrants in the area w ill sufficiently serve the water needs of the Culpepper Plaza Redevelopment. Fireflow conditions maintained velocities below 12 fps and pressure at or above 40 psi. If you have any comments, or would like to discuss our f indings further, please feel free to contact cc: Dan Muniza S:\Proj\0553-Culpepper_Redevelopment\Docs\0553-fireflow-report-06111 O.doc 511 UNIVERSITY DRIVE EAST, SUITE 204 • COLLEGE STATIOf'J, TX 77840 • T 979.260.6963 • F 979.260.3564 CIVIL ENGINEERING • HYDRAULICS • HYDROLOGY • U11LITIES • STREETS • SITE PLANS • SUBDIVISIONS mfo@mitchellandmorgan.com • www.mitchellandmorgan.com 7TMPBIDIXB i/ . FIR&R.OW REQtMBIENT8 FOR.._.... ! ! TABLE 8105. 1 c· lllNlllUll AEQW1ED FIRE A.OW ANO FLOW DURATION FOR llUl.D9GS . : -----•-------..____..... IAelld .. llAMllllA. Far SI: I ...-e foot• ().0929· ,1.2, I plloa per ... • 3.715 U.. I ,_..per .... i11c1a • 6M5 kPa.. L 'l)lpa al co•u1cdoa me llUed ~the lrtta11.,.,,,.,,, W1t1 Calk. II. .......... 20 psi. 351 PIREP\.OW 1.sOO PLOW DURA110H 2 3 • ~ '-"l .· ( -t 2000 INTERNA110 EXHIBIT 1 07/13/2006 15:33 FAX 979 764 3452 COLLEGE STATION PUB.UTL. I# S( College Station Utilities ~ Reliable, Affordable, Community Owned 1601 GRAHAM ROAD COLLEGE STATION TEXAS 77845 Date: 13 JULY 2006 Number pages including cover sheet -3 Fax number: 260-3564 Attention: BECKY Company: MITCHELL AND MORGAN From: Butch Willis Water Services Department Phone: 979-764-3435 Fax: 979-764-3452 FLOW TEST REPORT Nozzle size: 2.5 inch Location: CULPEPPER PLAZA Flow hydrant number: D-072 Pitot reading: 85 (GPM): 1550 Static hydrant number: D-177 Static PSI: 96 Residual PSI: 96 COMMENTS: HARVEY RD NEAR EXXON ~001 EXHIBIT 2A 07/13/2006 15:35 FAX 979 764 3452 COLLEGE STATION PUB.UTL. /14( College Station Utilities ~ Re.Jiable, Affordable, Community Owned 1601 GRAHAM ROAD COLLEGE STATION TEXAS 77845 Date: 13 JULY 2006 From: Butch Willis Water Services Department Phone: 979-764-3435 Fax: 979-764-3452 FLOW TEST REPORT Nozzle size: 2.5 inch Location: CULPEPPER PLAZA Flow hydrant number: D-069 Pitot reading: 70 (GPM): 1405 Static hydrant number: D-181 Static PSI: 94 Residual PSI: 92 COMMENTS: CLOSE TO BENNEGENS !gj003 EXHIBIT 2A 07/13/2006 15:34 FAX 979 764 3452 COLLEGE STATION PUB.UTL. II;(( College Station Utilities ~ Reliable, Affordable, Community Owned 1601 GRAHAM ROAD COLLEGE STATION TEXAS 77845 Date: 13 JULY 2006 From: Butch Willis Water Services Department Phone: 979-764-3435 Fax: 979-764-3452 FLOW TEST REPORT Nozzle size: 2.5 inch Location: CULPEPPER PLAZA Flow hydrant number: D-070 Pitot reading: 83 (GPM): 1525 Static hydrant number: D-071 Static PSI: 94 Residual PSI: 92 COMMENTS: BACK OF COMPLEX WHERE FIRE SPRINKLERS ARE TIED IN ~002 EXHIBIT 2A EXHIBIT2B Analysis Type: Steady State, Average day, no additional demand for Culpepper Plaza (static conditions) -flow test comparison EXHIBIT 28 Results -Junctions Number of Junctions: I 7(Selection) Junction ID Elevation Demand Grade Pressure [ft] [gpm] [ft] [psi] 148 297.000 6.645 549.433 109.379 150 296.000 0.000 549.262 109.738 151 293.000 21 .045 549.187 111.006 153 286.000 19.167 549.260 114.071 J 154 286.000 2.658 549.267 114.073 580 286.000 14.056 549.313 114.093 ,- 15.903 581 286.000 549.286 114.082 582 1285 .000-0.000 549.25 1 114.500 -.-- 639 286.000 0.000 549.420 114.140 r---I 295.000 I 28.447 I 550.244 I 110.597 640 641 298.000 1 o.ooo 550.098 109.234 1284.000 I o.ooo I I 1218 549.249 114.933 J 2251 1290.500 1 o.ooo ~ 549.712 1 112.317 I 2252 I 291.500 I o.ooo 549.36 1 111.731 I 288.750 i 0.000 I 549.335 I 112.911 2253 ,--- I o.ooo 2254 286.000 549.351 114.110 2255 1290.000 I o.ooo i 549.351 I 11 2.3n EXHIBIT2B Results -Pipes Number of Pipes: 19(Se~n) Roughness l Pipe ID Node 1 Node2 Diameter Length Flow Velocity Headloss [in] [ft] [ millift] [gpm] [ft/s] [ft] 979 640 2251 12 .000 720.537 120.000 467.596 1.326 0.532 1085 151 582 6.000 819.825 110.000 -20.652 -0.234 0.064 r---- 1166 148 641 8.000 746.175 110.000 -163.375 -1 .043 0.665 ---r 1167 148 2252 8.000 884.531 110.000 45.233 0.289 0.072 1168 150 148 8.000 382.508 110.000 -111.497 -0 .712 0.172 ,- 1169 151 150 8.000 663.430 110.000 -53.430 -0.341 0.075 1171 154 581 8.000 116.103 110.000 -62.155 -0.397 0.019 J ~ ,--- 1172 154 153 8.000 369.776 110.000 19.167 0.122 0.006 I .--- 1553 580 2254 18.000 259.169 130.000 -583.345 -0.735 0.038 I ss1 ___, -- 1554 580 18.000 123.451 130.000 -614.521 -0.775 0.027 ,---- 1555 582 1 ss1 18.000 1243.171 . 130.000 -546.463 -0.689 0.035 _J 1641 I 640 I 364.910 I 120.000 1594 12.000 -323 .802 -0.919 0.146 j 121s j 1s4 j s.ooo j 2s9.766 ~ -r 10.<ITT _J 2255 110.000 -40.330 -0 .257 I 121 s I I I 114.754 I 130.000 I I I 0.001 2258 582 12.000 -56.349 -0.160 2651 I 22s1 I 639 I 12.000 387.820 I 120.000 I 467.596 1 1.326 0.293 I 2654 I 22s2 2253 8.000 324.416 110.000 45 .233 0.289 0.026 J 2655 j 2253 I sso 8.000 I 268.988 110.000 45.233 0.289 I 0.022 2656 I 2254 1639 18 .000 499.971 130.000 -583.345 -0.735 0.069 I I 2254 2657 I 22ss 8.000 387.730 140.000 -0.000 -0.000 I o.ooo J EXHIBIT 28 EXHIBIT2C Analysis Type: Steady State, average day conditions, flow test comparison -residual Horizontal Plan EXHIBIT2C NEAR EXXON Results -Junctions r-.-- Junction Elevation Demand Grade Pressure ID [ft] [gpm] [ft] [psi] ---r 639 286.000 0.000 537.982 109.184 ---, -,-- 2256 286.000 1550.000 537.673 109.050 NEA R BENN/GAN'S Results -Junctions Junction Elevation I Grade Pressure I ID Demand r-- [ft]l[psi] [ft] [gpm] 640 1295.000 128.447 I 539.202 I 105 .813 2257 292.750 1405 .000 538.870 106.644 BACK OF COMPLEX Results -Junctions Junction ID 2258 2261 Elevation [ft] I 289.000 1287.250 Demand Grade Pressure [gpm] [ft] [psi] I o.ooo I 525.814 1 102 .612 i 1525.000 1525.814 1 103 .370 I EXHIBIT2C EXHIBIT3 Project Description: Steady State, firetl ow multiplier (x3 .69) on average day conditions, 5500 gpm firetlow split between 2 hydrants Horizontal Plan / .,,~<)"' ..::..::.;=------~o4. EXHIBIT 3 Results -Junctions Time Level: O; 0 day 0:00 hr Number of Junctions: 19(Selection) Junction ID I Elevation Demand Grade Pressure [ft] [gpm] [ft] [psi] ...----· 148 297.000 24.520 435.572 60.043 150 296.000 0.000 434.832 T 60.156 151 293.000 77.656 434.742 . 61.4~ r-- 153 286.000 70.726 440.3 14 66.864 154 286.000 9.808 440.385 66~ 580 1286.000 51.867 441.5 12 67.383 I 581 I 286.000 21.782 440.808 67.078 I 582 285.000 0.000 439.902 67.119 639 I 286.000 I o.ooo 447.950 70.173 640 295 .000 104.969 449.466 66.930 641 298.000 0.000 447.169 64.635 I 642 300.000 0.000 446.699 63 .565 643 300.000 41.727 446.6 13 63.527 1218 284.000 0.000 439.897 67 .5 50 2251 290.500 0.000 448.488 68.456 2252 291.500 1375.000 429.557 59.820 2253 288.750 0.000 436.081 63.839 2254 286.000 0.000 443.121 68.081 2255 290.000 1375.000 431.986 61 .522 EXHIBIT 3 Results -Pipes Number of Pipes: 21 (Selection) r--,--I Velocity Pipe ID Node 1 Node2 Diameter Length Roughness Flow Headloss I .----,-_J [in] [ft] [millift] [gpm] [ ft/s] [ft] 979 640 22Sl 12.000 720.S37 120.000 649.090 l.S41 0.97S JOSS l SI SS2 6.000 Sl9.S2S 110.000 -22 1.070 -2.S09 S.160 ...------___J 1166 14S 641 S.000 746. I 7S 110.000 -762.114 -4.S64 I l .S97 J ---,.--- 1167 14S 22S2 S.000 SS4.S3 I 110.000 492.SS6 13.146 6.0IS __J I 16S I 1so 14S S.000 I 3s2.sos ~.ooo I -244.73S I -l.S62 0.740 1169 IS 1 ISO S.000 663.430 110.000 1 -s9.13S 1-0.377 0.090 1171 IS4 SSl S.000 116.103 110.000 -323 .26S I -2.063 0.42~ r I 1172 1S4 IS3 S.000 369.776 110.000 70.726 OAS I 0.071 I sso I 22S4 I 2s9.I69 1-4332.729 I ISS3 1 1s.ooo 130.000 -S.463 1.609 1SS4 I ss1 \ sso G s.ooo 123.4Sl 130.000 -339S.71 S -4.2SS FoH I ss2 I ss1 I 1s.ooo 1243.171 I 1-30S3.667 1-3 .SSO lSSS 130.000 I 1S94 641 640 12.000 364.910 120.000 -1417.190 -4.020 2.297 1S9S 1642 1641 12.000 I 309.467 I 120.000 -6SS.076 -I.SSS 0.46~ IS96 1643 1642 12.000 124.649 I 120.000 1-6SS.076 I -I.SSS I o.os7 22SS 121S 1S4 S.000 2S9.766 110.000 -242.734 -1 .S49 0.4SS 22SS I 121s 12.000 l 14.7S4 130.000 -114.011 -0.323 O.OOS 26Sl 22Sl 639 12.000 3S7.S20 120.000 649.090 1.S41 O.S3S 26S4 22S2 22S3 S.000 324.416 110.000 -SS2.144 -S.631 6.S24 26SS 22S3 sso S.000 26S.9SS 110.000 -SS2 .144 -S .631 S.430 26S6 22S4 639 IS.000 499.971 130.000 -S707.729 -7.196 4.S29 26S7 I 22s4 I 22ss S.000 I 3s7.730 140.000 137S .OOO S.776 I I. I 3S EXHIBIT 3