HomeMy WebLinkAboutSP2025-000013 Fire Flow Analysis
Fire Flow Analysis Report
for
Brazos Valley Endodontic Associates
College Station, Texas
March 2025
Developer/Owner:
Eilers Holdings, LLC
2901 E 29th Street
Suite 117
College Station, Texas
Prepared By:
Schultz Engineering, LLC
TBPE Firm #12327
911 Southwest Parkway East
College Station, Texas 77840
979.764.3900
SE Job No. 24-188 D03/04/2024
Contents
1 General Information……………………………………………………………………………………1
1.1 Location……….…………………………..……………………………………….………………1
1.2 Primary Water Supply...………………..……………………………………….……………….1
2 Design Criteria…………………………………………………………………………….……………1
2.1 Pipe Selection……………………………...………………..…………………….……………….1
2.2 Existing System Pressure Tests……………..………………………………………..……………1
2.3 Demand – Domestic Use...………………………………………………...………………………2
2.4 Maximum Lengths for Water Mains………………………………………..……………………..1
3 Design………………………………………………..…………………………………………………2
3.1 Fire Flows…………………………………………………………...........……………….……….2
3.2 Domestic Design……..…………………………………………………………………………….2
3.3 Water System Summary.……………... …………………………………………………………..2
3.4 Design Results……………...………………………………………………………...……………2
4 Conclusion……………………………………………………………………………….……………..3
Exhibits
A Vicinity Map
B Water System Overall Layout
C Flow Test Report
D Pipe & Junction Analysis Summary – Domestic flow
E Pipe & Junction Analysis Summary – Fire Flow
Brazos Valley Endodontic Associates
March 2025
1
1 General Information
1.1 Location
The Brazos Valley Endodontic Associates is a 2.017 acre commercial development located in College
Station. This project will be designed to meet the requirements of City of College Station. For
location of the project site, refer to Exhibit A – Vicinity Map.
1.2 Primary Water Supply
Brazos Valley Endodontic Associates water service is provided by an existing 6” line Corsair Drive.
2 Design Criteria
2.1 Pipe Selection
2.1.1 Pipe Materials
Design Constraints:
• Polyvinyl chloride pipe (PVC) shall be DR14 (meeting current AWWA C-900 standards) for
sizes 4 through 12 inches; and DR 14 (meeting current AWWA C-905 standards) for sizes
greater than 12 inches.
• Type ‘K’ soft copper tubing shall be used for all service lines 2 inches and smaller.
2.1.2 Pipe Size
Design Constraints:
• The standard pipe sizes for water distribution mains are 4, 6, 8, 12, 16, and 18 inches in
diameter.
• Standard service lines within the right of way shall be 1, 1.5, or 2 inch.
2.2 Existing System Pressure Tests
Flow Hydrant - See Exhibit C
Flowrate: 1250 gpm
Static Pressure: 80 psi
Residual Pressure: 60 psi
2.3 Demand - Domestic Use
Commercial
Avg. Flow (Fixture Units): 6 gpm
Peaking Factor: 4
Peak Flow: 24 gpm
Brazos Valley Endodontic Associates
March 2025
2
2.4 Maximum Lengths for Water Mains
A 4-inch line may be allowed for permanent dead-end mains not exceeding 500 feet. A 6-inch main
may be allowed up to a maximum of 1500 feet in length and must connect at each end to an 8 inch
or larger main and shall have no more than 2 fire hydrants or flushing points.
3 Design
3.1 Fire Flows
The minimum required fire flow for a Commercial Building IBC Type V-B of 3,620 sf is 1750
gallons per minute
3.2 Domestic Design
Total Domestic Demand = 24 gpm
The proposed 8” waterlines are in accordance with the Bryan/College Station Unified Design
Guidelines – Domestic Water. This report provides the results of the water system analysis under the
fire flow and domestic demand requirements, (1774 gpm) which produced the lowest pressure in the
system.
3.3 Water System Summary
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 11.76 fps is less than the
required maximum of 12 fps.
3.4 Design Results
Full design results shown in the following exhibits:
Exhibit A – Vicinity Map
Exhibit B – Water System Overall Layout
Exhibit C – Flow Test Report
Exhibit D – Pipe & Junction Analysis Summary – Domestic Flow
Exhibit E – Pipe & Junction Analysis Summary – Fire Flow
Summary of Calculations
with Minimum Required Line Sizes
Domestic Demand
Pressure Min. 77.9 psi
Velocity Max. 0.16 fps
Fire Flow Demand FH Pressure Min. 29.4 psi
Velocity Max. 11.76 fps
Brazos Valley Endodontic Associates
March 2025
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4 Conclusion
The proposed water lines and fire hydrants provide the required fire flow. The proposed 8”
waterlines meet or exceed all of the design criteria for the Bryan/College Station Unified Design
Guidelines – Domestic Water. They will provide adequate water pressure, flowrate and velocity for
domestic demands and fire flow.
EXHIBIT A
VICINITY MAP
VICINITY MAP
NOT TO SCALECORSAIR DRIVESEBESTA ROADEMERALD PARKWA
Y
F
O
X
F
I
R
E
D
R
I
V
E
EXHIBIT A
EXHIBIT B
WATER SYSTEM OVERALL LAYOUT
CORSAIR
DR
IVE
LOT 11R
2.017 AC.
S C A L E
PL O TTIN G S C ALE :
1"=150'
V E RTI C AL
H O RIZ O N TAL
FILE NA M E:
SURV E YE D
R C F
D E SIG N ED
R C F
DRAW N APPR O V E D
J P S
J O B N O .D ATE 1:1
24-23624-236 J A N U A RY 2025
BWATER SYSTEM
OVERALL LAYOUT
E X H I B IT
CAMWEST CROSSING II
COLLEGE STATION, TX
K E RR
911 Southwest Pkwy E.
College Station, TX 77840
979.764.3900
TBPE NO. 12327
N/A
EXHIBIT C
FLOW TEST REPORT
Date test completed
Time completed
Test completed by
Witness
FLOW HYDRANT
Location
Nozzle size
Hydrant number
Pitot reading in PSI
Flow in G.P.M.
STATIC HYDRANT
Location
Hydrant number
Static PSI
Residual PSI
Requested By:
Comments
1-23-25
Eric Macias
Paul S
3109 CORSAIR DR
2.5
I-076
55
1250
1601 Harvey RD
I-077
80
60
EXHIBIT D
PIPE & JUNCTION ANALYSIS SUMMARY
DOMESTIC FLOW
Pipe
Number Length (ft) Size (in) Material
Hazen-
Williams C
Flow
(gpm)
Velocity
(ft/s)
P-1 173 6 PVC 110 14 0.16
P-2 90 8 PVC 110 24 0.15
P-RES1 32 6 PVC 110 14 0.16
P-3 9 8 PVC 110 0 0
P-4 356 6 PVC 110 -10 0.11
P-RES2 29 6 PVC 110 10 0.11
Junction Elevation
Junction
Demand
(gpm)
Pressure
(psi)
J-1 282.53
0 79.8
J-2 281.84
0 80.1
J-3 281.6
24 80.2
FH-1 281.58
0 80.2
J-4 287 0 77.9
Exhibit D
WaterCAD Analysis Summary
Pipe Analysis - Domestic Demand
WaterCAD Analysis Summary
Junction Analysis - Domestic Demand
EXHIBIT E
PIPE AND JUNCTION ANALYSIS SUMMARY
FIRE FLOW
Pipe
Number Length (ft) Size (in) Material
Hazen-
Williams C
Flow
(gpm)
Velocity
(ft/s)
P-1 173 6 PVC 110 1,037 11.76
P-2 90 8 PVC 110 1,774 11.32
P-RES1 32 6 PVC 110 1,037 11.76
P-3 9 8 PVC 110 -1,750 11.17
P-4 356 6 PVC 110 -737 8.37
P-RES2 29 6 PVC 110 737 8.37
Junction Elevation
Junction
Demand
(gpm)
Pressure
(psi)
J-1 282.53 0 40.2
J-2 281.84 0 32.4
J-3 281.6 24 29.7
FH-1 281.58 1,750 29.4
J-6 287 0 39
Junction Analysis - Fire Flow Demand (FH-1)
Exhibit E
WaterCAD Analysis Summary
Pipe Analysis - Fire Flow Demand (FH-1)
WaterCAD Analysis Summary