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 ,
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Filename: CD1- 127 -0150 -L01 Page - 3
ut 14:5d 1 .I 979 784 341 COLLEGE STATIt3N Pty -tTL. 1JO03,6u1
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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
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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
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4 nN MET GAG FAX: (979) 690 -0329
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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
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Rabo A. Metcalf, P.E Date •RggO q • ••"' •• t
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�`� 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
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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
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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.
Jun 17 03 11:43a Rabon Metcalf Engineering 9796900329 p.2
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