HomeMy WebLinkAboutFire Flow AnalysisFire Flow Analysis & Water Service Report
for
Northgate Proper Apartments
Lots 6-10, Block 2, Tauber Addition
College Station, Texas
FEBRUARY 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 ENGINEERING; U.C.
—/ 2
General Information
Location: The development includes Block 2, Lot 6-10, Tauber Addition, College Station,
Texas. The project lots are located at the northeast comer of the intersection of
Tauber Street and Cherry Street.
General Note: A 6" water line will connect to the existing 8" water line in Tauber Street and
extend across Tauber to the proposed building. The 6" water line will be used
for the fire line. Domestic and irrigation services will come off the 6" water line
to serve the building and irrigation. The three existing fire hydrants will be used
for hydrant flow.
Land Use: Residential — Multi Family
Design Criteria/Analysis
Primary Water Supply: Existing 8" water line in Tauber Street.
Domestic Demand:
Fixture Units: 350.9
Max. Demand Flow: 95 gpm - 2" Water Meter
Fire Flow: Northgate Proper Apartments is proposed to have a 26,603 sf building. The
building is proposed to be Type V-A Construction per the International Building
Code. In accordance with Table B 105.1 of the International Fire Code, the
minimum required fire hydrant flow is 3,000 gpm. The building is proposed to
have fire sprinkler system; therefore the minimum required fire flow is reduced
to 1,500 gpm.
Existing System Pressure Tests: (Representative of the Flows and Pressures in the area)
Flow Hydrant: 407 Cherry (A-051)
Flowrate: 1, 350 gpm
Static Hydrant: 308 College Main (A-075)
Static Pressure: 74 psi
Residual Pressure: 62 psi
Exhibits: Exhibit A — Normal Flow Calculations
Exhibit B - Water System Flow Test Report
Exhibit C — Water Layout Exhibit
Water System Analysis: The residual pressure in the existing water system is calculated to be 57 psi at a
fire hydrant & domestic flow of 1,595 gpm. The residual pressure under peak
domestic flow will be greater than 70 psi. The residual pressures meet the
requirements of 20 psi and 35 psi for these conditions.
Conclusion
The proposed 6" water line will provide water service to the building and the
existing fire hydrants and water system will meet or exceed all of the design
criteria for the City of College Station. It will provide adequate water pressure
and flowrate for both domestic and fire protection demands.
Exhibit A
Fixture Unit Calculations
Exhibit A
Water System
Peak Flow Calculations
Fixture Count Determination for Overall System
Fixture Unit Value
Fixture Type # of Fixtures Load Factor Fixture Units
Bathroom Group - Private
34
3.6
122.4
Kitchen Sink - Private
33
1.4
46.2
Lavatory - Private
31
0.7
211
Water Closet - Private Tank
31
2.2
68.2
Dishwashing Machine
33
1.4
46.2
Washing Machine - Private
33
1.4 I
46.2
I Total = 350.9�
Water Demand - 95 gpm
Exhibit B
Water System Flow Test Report
EXHIBIT B
Date test completed Friday August 17, 2012
Time completed 1:30 P.M.
Test completed by Justin Tamplin
Witness
FLOW HYDRANT
Location
Nozzle size
Hydrant number
Pitot reading in PSI
Flow in G.P.M.
Location
Hydrant number
Static PSI
Residual PSI
Comments
407 Cherry
2.5
A-051
65
308 College Main
A-075
74
Exhibit C
Water Layout Exhibit
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NORTHGATE PROPER SCALE EXHIBIT
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APARTMENTS WATER EXHIBIT
NORTHGATE
COLLEGE STATION, TEXAS W � 12-204
Fire Flow Analysis & Water Service Report
for
Northgate Proper Apartments
Lots 6-10, Block 2, Tauber Addition
College Station, Texas
FEBRUARY 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 ENGINEERING, LLC,
—/ 2
General Information
Location: The development includes Block 2, Lot 6-10, Tauber Addition, College Station,
Texas. The project lots are located at the northeast corner of the intersection of
Tauber Street and Cherry Street.
General Note: A 6" water line will connect to the existing 8" water line in Tauber Street and
extend across Tauber to the proposed building. The 6" water line will be used
for the fire line. Domestic and irrigation services will come off the 6" water line
to serve the building and irrigation. The three existing fire hydrants will be used
for hydrant flow.
Land Use:
Design Criteria/Analysis
Primary Water Supply:
Domestic Demand:
Fixture Units:
Max. Demand Flow:
Residential — Multi Family
Existing 8" water line in Tauber Street.
350.9
95 gpm - 2" Water Meter
Fire Flow: Northgate Proper Apartments is proposed to have a 26,603 sf building. The
building is proposed to be Type V-A Construction per the Intemational Building
Code. In accordance with Table B 105.1 of the Intemational Fire Code, the
minimum required fire hydrant flow is 3,000 gpm. The building is proposed to
have fire sprinkler system; therefore the minimum required fire flow is reduced
to 1,500 gpm.
Existing System Pressure Tests: (Representative of the Flows and Pressures in the area)
Flow Hydrant: 407 Cherry (A-051)
Flowrate: 1, 350 gpm
Static Hydrant: 308 College Main (A-075)
Static Pressure: 74 psi
Residual Pressure: 62 psi
Exhibits: Exhibit A — Normal Flow Calculations
Exhibit B - Water System Flow Test Report
Exhibit C — Water Layout Exhibit
Water System Analysis: The residual pressure in the existing water system is calculated to be 57 psi at a
fire hydrant & domestic flow of 1,595 gpm. The residual pressure under peak
domestic flow will be greater than 70 psi. The residual pressures meet the
requirements of 20 psi and 35 psi for these conditions.
Conclusion
The proposed 6" water line will provide water service to the building and the
existing fire hydrants and water system will meet or exceed all of the design
criteria for the City of College Station. It will provide adequate water pressure
and flowrate for both domestic and fire protection demands.
Exhibit A
Fixture Unit Calculations
Exhibit A
Water System
Peak Flow Calculations
Fixture Count Determination for Overall System
Fixture Unit Value
Fixture Type # of Fixtures Load Factor Fixture Units
Bathroom Group - Private
34
3.6
122.4
Kitchen Sink - Private
33
1.4
46.2
Lavatory - Private
31
0.7
21.7
Water Closet - Private Tank
31
2.2
68.2
Dishwashing Machine
33
1.4
46.2
Washing Machine - Private
33
1.4
46.2
Total = 350.9
Water Demand - 95 gpm
Exhibit B
Water System Flow Test Report
EXHIBIT B
Date test completed Friday August 17, 2012
Time completed 1:30 P.M.
Test completed by Justin Tamplin
Comments Requested
Exhibit C
Water Layout Exhibit