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HomeMy WebLinkAbout02-00500273- 00075422 00- 5c..lc'i 9*.5 SA -w■ 1 0 D5 RABON METCALF CALF ENGINEERING (979) 690 -0329 - HOME POST OFFICE BOX 9253 (979) 690-0329 FAX • COLLEGE STATION, TEXAS 77842 (979) 219 -4174 - CF71, EMAIL BMENGINEER @JUNO.COM January 27, 2003 Brett McCully, P.E. Assistant City Engineer City of College Station 1101 Texas Avenue South College Station, TX 77842 RE: Aggieland Carpet One — Water Line Improvements — Hydraulic Analysis Lot 1, Block One, Harley Subdivision RME No. 127 -0150 Dear Brett: Please find attached the following findings and calculations for the above referenced project's minimal water line improvements. As shown on the City of College Station Capital Improvements Plan a 18" water line is proposed and will be installed. This hydraulic analysis and the supporting design methods were performed in accordance with the City of College Station's development standards and specifications for oversize participation purposes. Information used for the design and the resulting calculations, for the water line improvements, are as follows: ❖ A -1: COCS Public Utilities — Flow Test Report ❖ A -2: Hazen- Williams Evaluation ❖ A -3: Water Line Schematic Hydraulic Analysis The 4.00 -acre tract, currently platted as Lot 1, Block One of the Harley subdivision, is anticipated to be developed into a commercial plaza. The office plaza will consist of three (3) building and five (5) at full development. For domestic and fire services a water line will be extended across the front of this property with fire hydrants placed at strategic locations and line extensions placed for fire sprinkler service. This water line will tie into an existing 18" water line that ends in front of the Harley Davidson Dealership. The proposed water line's domestic and fire flow demands will be based from this proposed data at full development of the commercial plaza. w3):30)yr Filename: CD1 -127- 0150 -L01 Page - 1 Domestic Demand: Building One — Two -Story: Gross: 277,00 ft — Approx. Peak Demand = 35 gpm Building Two & Three — One Story: Gross: 3,000 ft — Approx. Peak Demand = 20 gpm Building Four — One Story: Gross: 116,00 ft — Approx. Peak Demand = 30 gpm Total Domestic Demand = 85 gpm Fire Flow Demand: As prescribed in Appendix B of the 2000 International Fire Code the minimum fire flows will be as designated in Table B105.1. The fire flow requirement is based on the variable of construction type and fire area. The improvements for this development shall be of Type IV construction. Fire flow determinations for each building are as follows in Table #1. TABLE #1 - INITIAL FIRE FLOW Sprinkler Building Fire Area Fire Flow Reduction I.D. (ft) (gpm) (gpm) 1 27,700 3,000 1,500 2 & 3 3,000 750 1,500 4 11,600 5,000 1,500 ❖ The 2000 IFC allows for a 50% reduction for buildings with automatic sprinkler systems; ❖ The minimum fire flow to any building shall be 1,500 gpm. Design Results: Using the calculated domestic and fire flow conditions and existing water pressures in the area, the water line improvements were appropriately sized. A summary of results for each condition is shown below in Table #2. The results illustrate the residual pressure when the coefficient of friction is equal to 100, therefore using the more conservative figures. ❖ Domestic Flow — This condition illustrates the hydraulic conditions of the water system improvements with full development conditions at peak demand; ❖ Fire Flow Condition #1 — This analysis illustrates the results of fire flow conditions for fire protection at Building One. The required fire flow will be a evenly split between the two (2) proposed fire hydrants; ❖ Fire Flow Condition #2 — This scenario reports the fire flow demands and hydraulic results for the fire service to Building Two. The required fire flow will be served only by Hydrant #1; ❖ Fire Flow Condition #3 — This analysis is for the fire protection of Building Three. The required fire flow will only be served by Hydrant #2; ❖ Fire Flow Condition #4 — This analysis illustrates the fire flow demands and hydraulic results for the fire service to Building Four. The required fire flow will only be served by Hydrant #2. Filename: CD1- 127 -0150 -L01 Page - 2 , TABLE #2 - WATER LINE DESIGN SUMMARY 8" Segment One 8" Segment Two Demand Velocity Pressure Demand Velocity Pressure Scenerio (gpm) (fps) (psi) (gpm) (fps) (psi) Domestic Flow 85 0.54 99.10 85 0.54 99.04 Fire Flow Condition #1 1500 9.59 81.53 750 4.79 78.73 Fire Flow Condition #2 1500 9.59 81.53 0 0.00 81.10 Fire Flow Condition #3 & #4 1500 9.59 81.53 1500 9.59 72.55 The attached engineering calculations are issued for the before stated water line improvements and are issued by me and are applicable to this project. Please call should you have any questions or require assistance. I Sincerely, IllErlArk ,,4.-.. 1 . Rabon A. Metcalf, P.E. _ ,� Is' - ik; • • t 111111 METC , APO 9e 8 583 cr F • Filename: CD1- 127 -0150 -L01 Page - 3 ut 14:5d 1 .I 979 784 341 COLLEGE STATIt3N Pty -tTL. 1JO03,6u1 Ofpaterislffe ' f QoIIege StUt o_ {` t l t es C r r+U•lgr fw..•a PUBLIC 'UTILITIES DEPARTMENT 1601 GRAHAM ROAD COLLEGE STATION TEAS 77845 Date: 22 January, 2003 Number pages including cover sheet - 1 Fax to: 690-0329 Attention: RABIN METCALF Company: From: Butch Willis Water Wastewater Division Phone: 979 - 764 -3435 Fax: 979 - 764 -3452 FLOW TEST REPORT Location: 4101 HWY 6 (HARLEY DAVIDSON) Flow hydrant number: T-003 Pitot reading: 85 (GPM): 1550 Static hydrant number: T-010 Static PSI: 100 Residual PSI: 85 AGGIELAND CARPET ONE WATER LINE IMPROVEMENTS Hazen- Williams DOMESTIC FLOW HEAD FRICTION STATIC RESIDUAL FLOW FLOW DIST. ID C LOSS LOSS VELOCITY HEAD TDH PRESSURE (gpm) (cfs) (ft) (in) VALUE (ft/100) (ft) (fps) (ft) (ft) (psi) 85.0 0.19 420 8 140 0.02 0.07 0.54 2.00 2.07 99.10 86.0 0.19 420 8 100 0.03 0.13 0.55 2.00 2.13 99.04 Static Pressure (psi) = 100.00 FIRE FLOW CONDITION #1 HEAD FRICTION STATIC RESIDUAL FLOW FLOW DIST. ID C LOSS LOSS VELOCITY HEAD TDH PRESSURE (gpm) (cfs) (ft) (in) VALUE (ft/100) (ft) (fps) (ft) (ft) (psi) 1500.0 3.34 110 8 140 3.41 3.75 9.59 1.00 4.75 82.94 750.0 1.67 310 8 140 0.95 2.94 4.79 2.00 4.94 81.23 1500.0 3.34 110 8 100 6.36 7.00 9.59 1.00 8.00 81.53 750.0 1.67 310 8 100 1.76 5.47 4.79 2.00 7.47 78.73 Residual Pressure (psi) = 85.00 FIRE FLOW CONDITION #2 HEAD FRICTION STATIC RESIDUAL FLOW FLOW DIST. ID C LOSS LOSS VELOCITY HEAD TDH PRESSURE (gpm) (cfs) (ft) (in) VALUE (ft/100) (ft) (fps) (ft) (ft) (psi) 1500.0 3.34 110 8 140 3.41 3.75 9.59 1.00 4.75 82.94 0.0 0.00 310 8 140 0.00 0.00 0.00 2.00 2.00 82.51 1500.0 3.34 110 8 100 6.36 7.00 9.59 1.00 8.00 81.53 0.0 0.00 310 8 100 0.00 0.00 0.00 2.00 2.00 81.10 Residual Pressure (psi) = 85.00 FIRE FLOW CONDITION #3 & #4 HEAD FRICTION STATIC RESIDUAL FLOW FLOW DIST. ID C LOSS LOSS VELOCITY HEAD TDH PRESSURE (gpm) (cfs) (ft) (in) VALUE (ft/100) (ft) (fps) (ft) (ft) (psi) 1500.0 3.34 110 8 140 3.41 3.75 9.59 1.00 4.75 82.94 1500.0 3.34 310 8 140 3.41 10.58 9.59 2.00 12.58 77.92 1500.0 3.34 110 8 100 6.36 7.00 9.59 1.00 8.00 81.53 1500.0 3.34 310 8 100 6.36 19.72 9.59 2.00 21.72 72.55 Residual Pressure (psi) = 85.00 127 -0150 Hydraulic Anaylsis $ mo w : 1 P' ' I ' 13 6 II ■ m � 1 . L b FIRE HYDRANT #2 • I NE 1111 r • 1 I ` m I I M 8" PVC WATER \,. LINE — SEGMENT • 1 I 7 1 1 lk 11,1 ..........: . \ , , , , , \ \ „.... 11 h `\` y. 1 a< :I::: ' , , , , \ , t li AI • m III I\ z. • 1I1 11 ti. i Ii.er iiitili:. \ ' \ , - :•••• • FIRE HYDRANT #1 ::::: >::: >;:: \ � ; P' 8" PVC WATER \ J INNTl \\ RABON WATER LINE SCHEMATIC DATE: 1/24/03 SHEET NO METCALF 0150X1RA MTCALF ; AGGIELAND CARPET ONE SCALE: 1 " =50' POST OFFICE BOX 9253 H AR LE Y DAVIDSON COUECE STATION. TEXAS 77842 EMAIL.: r (9796 0329 OFFICE ( 690 -0329 DRAWN BY: RAM - 3 CELL - ( (979) 21 0 94174 RME NO. 127 -0150 CHK BY: RAM ENGINEER'S COST ESTIMATE WATER LINE IMPROVEMENTS (OVERSIZE PARTICIPATION - 8" LINE - ON -SITE) AGGIELAND CARPET ONE HARLEY SUBDIVISION COLLEGE STATION, BRAZOS COUNTY, TEXAS TOL UNIT NO. I DESCRIPTION I QUANTITY I UNIT I COST I COST 1 Mobilization & Trench Safety 1 LS $950.00 $950.00 2 8" PVC (C900 - DR 14 - Class 200) Water Line 420 LF $18.00 $7,560.00 w/Type "B" Backfill 3 8" DIP (Class 52) Water Line w/Type "B" Backfill 20 LF $24.00 $480.00 4 6" PVC (C900 - DR 14 - Class 200) Water Line 254 LF $15.00 $3,810.00 w/Type "B" Backfill 5 8" (MJ) Gate Valve & Box 3 EA $700.00 $2,100.00 6 6" (MJ) Gate Valve & Box 4 EA $500.00 $2,000.00 7 2" (MJ) Blow -Off Valve 1 EA $800.00 $800.00 8 Ductile Iron Fittings (Class 350) 1 LS $2,125.00 $2,125.00 9 Standard Fire Hydrant (Type 2) & Appurtenances 2 EA $2,150.00 $4,300.00 10 Domestic & Irrigation Water Service Connections 1 LS $1,000.00 $1,000.00 11 Cement Stabilized Sand Backfill 155 LF $25.00 $3,875.00 SUB -TOTAL = $29,000.00 This Engineer's Cost Estimate was prepared in this office, at the date shown, and is r -leased for the purpose of Cture cost o ections. �,�":;2 T ,•••. NEM -- 1 )2;1 o w , se 0000000000000 00• Rabo A. Metcalf, P.E \ Date . A: * . ET F # ,. . ,yam r RABON METCALF ENGINEERING ,77/ '' c i = POST OFFICE BOX 9253 ' � id ji \ COT,T.FGE STATION, TEXAS 77842 t i I L-1' CL: L,: (979) 219-4174 4 nN MET GAG FAX: (979) 690 -0329 4 A 'CfNFERI 4 E- MAIL: RMENGINEER @JUNO.COM CD1 -127- 0150 -E02 1 of 1 ENGINEER'S COST ESTIMATE WATER LINE IMPROVEMENTS (OVERSIZE PARTICIPATION - 18" LINE - ON & OFF SITE) AGGIELAND CARPET ONE HARLEY SUBDIVISION COLLEGE STATION, BRAZOS COUNTY, TEXAS UNIT T I NO. I DESCRIPTION I QUANTITY I UNIT I COST I CO T 1 Mobilization & Trench Safety 1 LS $1,145.00 $1,145.00 2 18" DIP (AWWA C151/A21.51) Water Line w/Type 543 LF $40.00 $21,720.00 "B" Backfill 3 6" PVC (C900 - DR 14 - Class 200) Water Line 254 LF $15.00 $3,810.00 w/Type "B" Backfill 4 18" Butterfly Valve 2 EA $1,500.00 $3,000.00 5 6" (MJ) Gate Valve & Box 4 EA $500.00 $2,000.00 6 2" (MJ) Blow -Off Valve 1 EA $800.00 $800.00 7 Ductile Iron Fittings (Class 350) 1 LS $6,000.00 $6,000.00 8 Standard Fire Hydrant (Type 2) & Appurtenances 2 EA $2,200.00 $4,400.00 9 Domestic & Irrigation Water Service Connections 1 LS $1,000.00 $1,000.00 10 Cement Stabilized Sand Backfill 205 LF $25.00 $5,125.00 SUB -TOTAL = $49,000.00 This Engineer's Cost Estimate was prepared in this office, at the date shown, and is r `• ased for the purpose of • • • e cost p • jections. �+4.'"�i'U -.—= pT O F T� 2r1 cr) , "*.• • '• Rabo A. Metcalf, P.E Date •RggO q • ••"' •• t METCA • r _ _ R ABON ME TCALF ENGINEERING •' • - O Y ? POST OFFICE BOX 9253 9 •! 8 "�i 4 '— N S. 1 COT .T,FGE STATION, TEXAS 77842 Ss� • • • • �� i_ CELL 1979) 219 -4174 , I dAI N j ns „' 4 V F�Q MET P 'G FAX: (979) 690 -0329 �`� INE ER I N E -MAIL RMENGINEER @JUtNO.COM CD1- 127- 0150-E01 1 of 1 / `\ ON METCALF ENGINEERING =— (979) 690 -0329 - HOME 7 POST OFFICE BOX 9253 (9791 690 -0329 - FAX ' COLLEGE STATION. TEXAS 77842 19791219 -4174 - CELL / EMAIL RMENGINEERQa JUNO.COM February 10, 2003 Brett McCully, P.E. Assistant City Engineer City of College Station 1101 Texas Avenue South College Station, TX 77842 RE: Aggieland Carpet One — Water Line Improvements — Hydraulic Analysis - Revised Lot 1, Block One, Harley Subdivision RME No. 127 -0150 Dear Brett: Please find attached the following findings and calculations for the above referenced project's minimal water line improvements. As shown on the City of College Station Capital Improvements Plan a 18" water line is proposed and will be installed. This hydraulic analysis and the supporting design methods were performed in accordance with the City of College Station's development standards and specifications for oversize participation purposes. Information used for the design and the resulting calculations, for the water line improvements, are as follows: ❖ A -1: COCS Public Utilities — Flow Test Report ❖ A -2: Hazen- Williams Evaluation ❖ A -3: Water Line Schematic Hydraulic Analysis The 4.00 -acre tract, currently platted as Lot 1, Block One of the Harley subdivision, is anticipated to be developed into a commercial plaza. The office plaza will consist of three (3) building and five (5) at full development. For domestic and fire services a water line will be extended across the front of this property with fire hydrants placed at strategic locations and line extensions placed for fire sprinkler service. This water line will tie into an existing 18" water line that ends in front of the Harley Davidson Dealership. The proposed water line's domestic and fire flow demands will be based from this proposed data at full development of the commercial plaza. Filename: CD1 -127- 0150 -L02 Page - 1 Domestic Demand: Building One — Two -Story: Gross: 277,000 ft — Approx. Peak Demand = 35 gpm Building Two & Three — One Story: Gross: 3,000 ft — Approx. Peak Demand = 20 gpm Building Four — One Story: Gross: 116,000 ft — Approx. Peak Demand = 30 gpm Total Domestic Demand = 85 gpm Fire Flow Demand: As prescribed in Appendix B of the 2000 International Fire Code the minimum fire flows will be as designated in Table B105.1. The fire flow requirement is based on the variable of construction type and fire area. The improvements for this development shall be of Type IV construction. Fire flow determinations for each building are as follows in Table #1. TABLE #1 - INITIAL FIRE FLOW Sprinkler Building Fire Area Fire Flow Reduction I.D. () (gPm) (gpm) 1 27,700 3,000 1,500 2 & 3 3,000 1,500 1,500 4 11,600 2,000 2,000 • The 2000 ITC allows for a 50% reduction for buildings with automatic sprinkler systems; • The minimum fire flow to any building shall be 1,500 gpm; • 750 gpm will be delivered to Building 1 fire sprinkler system. Design Results: Using the calculated domestic and fire flow conditions and existing water pressures in the area, the water line improvements were appropriately sized. A summary of results for each condition is shown below in Table #2. The results illustrate the residual pressure when the coefficient of friction is equal to 100, therefore using the more conservative figures. • Domestic Flow — This condition illustrates the hydraulic conditions of the water system improvements with full development conditions at peak demand; • Fire Flow Condition #1 — This analysis illustrates the results of fire flow conditions for fire protection at Building One. The required fire flow will be an evenly split between the two (2) proposed fire hydrants. An additional 750 gpm will be delivered to the internal fire sprinkler system; • Fire Flow Condition #2 — This scenario reports the fire flow demands and hydraulic results for the fire service to Building Two. The required fire flow will be served only by Hydrant #1; • Fire Flow Condition #3 — This analysis is for the fire protection of Building Three. The required fire flow will only be served by Hydrant #2; • Fire Flow Condition #4 — This analysis illustrates the fire flow demands and hydraulic results for the fire service to Building Four. The required fire flow will only be served by Hydrant #2. Filename: CD1- 127 - 0150 -L02 Page - 2 TABLE #2 - WATER LINE DESIGN SUMMARY 8" Segment One 8" Segment Two Demand Velocity Pressure Demand Velocity Pressure Scenerio (gpm) (fps) (psi) (gpm) (fps) (psi) Domestic Flow 85 0.54 99.10 85 0.54 99.04 Fire Flow Condition #1 2250 14.38 78.14 750 4.79 78.73 Fire Flow Condition #2 1500 9.59 81.53 0 0.00 81.10 Fire Flow Condition #3 & #4 2000 12.78 79.40 2000 12.78 64.41 The attached engineering calculations are issued for the before stated water line improvements and are issued by me and are applicable to this project. Please call should you have any questions or require assistance. Sincerely, Ilk \ �-1 Rabo A. Metcalf, P.E. � ; �1 'Ai.•••• •• •••• *•t M CALF S • • k Filename: CD1- 127 -0150 -L02 Page - 3 14:30 FAI 379 764 Y4 COLLEGE STATION PL'L TL. 0001,150i (V F- Watenilife fewerk &gag Ealleg Station Mattg GGTITaURhs Ow. o PUBLIC € MIITIES DEPARTMENT 1601 GRAHAM ROAD eOT J icE STATION TEXAS 77545 Date: 22 January, 2003 Number pages including cover sheet - 1 Fax to: 690 -0329 Attention: RABIN METCALF Company From: Butch Willis Water Wastewater Division Phone: 979- 764 -3435 Fax: 979 -764 -3452 FLOW TEST REPORT Location: 4101 HWY 6 MEIARLE'Y DAVIDSON) Flow hydrant number: T-003 P tot reading: 83 (GPM): 1550 Static hydrant number: T -010 Static PSI: .1E00 Residual PSI: 8S AGGIELAND CARPET ONE WATER LINE IMPROVEMENTS Hazen- Williams DOMESTIC FLOW HEAD FRICTION STATIC RESIDUAL FLOW FLOW DIST. ID C LOSS LOSS VELOCITY HEAD TDH PRESSURE (gpm) (cfs) (ft) (in) VALUE (ft/100) (ft) (fps) (ft) (ft) (psi) 85.0 0.19 420 8 140 0.02 0.07 0.54 2.00 2.07 99.10 86.0 0.19 420 8 100 0.03 0.13 0.55 2.00 2.13 99.04 Static Pressure (psi) = 100.00 FIRE FLOW CONDITION #1 HEAD FRICTION STATIC RESIDUAL FLOW FLOW DIST. ID C LOSS LOSS VELOCITY HEAD TDH PRESSURE (gpm) (cfs) (ft) (in) VALUE (ft/100) (ft) (fps) (ft) (ft) (psi) 2250.0 5.01 110 8 140 7.23 7.95 14.38 1.00 8.95 81.12 750.0 1.67 310 8 140 0.95 2.94 4.79 2.00 4.94 79.41 2250.0 5.01 110 8 100 13.47 14.81 14.38 1.00 15.81 78.14 750.0 1.67 310 8 100 1.76 5.47 4.79 2.00 7.47 75.34 Residual Pressure (psi) = 85.00 FIRE FLOW CONDITION #2 HEAD FRICTION STATIC RESIDUAL FLOW FLOW DIST. ID C LOSS LOSS VELOCITY HEAD TDH PRESSURE (gpm) (cfs) (ft) (in) VALUE (ft/100) (ft) (fps) (ft) (ft) (psi) 1500.0 3.34 110 8 140 3.41 3.75 9.59 1.00 4.75 82.94 0.0 0.00 310 8 140 0.00 0.00 0.00 2.00 2.00 82.51 1500.0 3.34 110 8 100 6.36 7.00 9.59 1.00 8.00 81.53 0.0 0.00 310 8 100 0.00 0.00 0.00 2.00 2.00 81.10 Residual Pressure (psi) = 85.00 FIRE FLOW CONDITION #3 & #4 HEAD FRICTION STATIC RESIDUAL FLOW FLOW DIST. ID C LOSS LOSS VELOCITY HEAD TDH PRESSURE (gpm) (cfs) (ft) (in) VALUE (ft/100) (ft) (fps) (ft) (ft) (psi) 2000.0 4.46 110 8 140 5.81 6.39 12.78 1.00 7.39 81.80 2000.0 4.46 310 8 140 5.81 18.02 12.78 2.00 20.02 73.55 2000.0 4.46 110 8 100 10.83 11.91 12.78 1.00 12.91 79.40 2000.0 4.46 310 8 100 10.83 33.58 12.78 2.00 35.58 64.41 Residual Pressure (psi) = 85.00 127 -0150 Hydraulic Anaylsis Ili ' I b 0 b rC ' rnl I 1 ll I k b I FIRE HYDRANT #2 '...".. ::...;::,......::::.:":.:\ 7 '. rn ' RE I kVA 11 ( V FliI I 8" PVC WATER m t LINE — SEGMENT th .\ \ \ ' IN \ t 1 ,Ile 41 I I m \\ \\ ... :!!!...‘, ,\‘' . • ii II r I I 1 iiiiii iii: \ ' \\\\ \ ;'.::, ( m Al \ ‘, ' \.\\ FIRE HYDRANT #1 Alitlow 8" PVC WATER LINE — SEGMENT 1 \ RABON I. ' Z DArE: 1/24/03 SHEET METCALF SCALE: 1 " =50' ENGINEERING POST OFFICE BOX 9253 H A R LE Y DAVIDSON COLLEGE STATION, TEXAS 77842 EMAIL: rmengineerOjuno. OFFICE — 9) 6 —0329 29 DRAWN BY: RAM e FAX — ( (979) 6 2 119-4174 RME NO. 127 -0150 !-1 CHK BY: RAM Jun 1 7 03 11:43a Rabon Metcalf' Engineering 9796900329 p . 1 RABON MEICALE ENGINEERING 1979) -0329 690 - HOME 0; POST OFFICE BOX 9253 (9791 690-0329 COLLEGE STATION. TEXAS "n812 1979) 219-4E74 - CELL EMAIL: RMENGINEERWUNO.COM FACSIMILE TRANSMITTAL SHEET To: ROM Carroll Cotter Rabon Metcalf, P.E. COMPANY: COCS 6/17/03 FAX NUMBER: TOTAL NO. OE PAGES INCLUDING COVER: 764-3496 2 puoN I; NUMBER: CC: Rlr CC FAX NUMBER: Aggieland Catpet One — Water Line 0 URGENT IA FOR REVIEW D PLEASE COMMENT IZI PLEASE REPLY 0 FOR YOUR RECORDS NOTES/COMMENTS: Fire hydrant adjustment that we discussed Thursday. Let me know if this will work and I will submit As-Builts once the changes have been made. The information contained in this fax is confidential and is exclusively for the use of thc previously addressed party. Please call the above number to correct any difficulties with the transmission of this fax. 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