HomeMy WebLinkAboutFire Flow Report(4k College Station Utilities
Reliable, A#ordable, Community Owned
Date test completed Wednesday November 19, 2014
Time completed 11:00 A.M.
Test completed by Howard Mitchell, Eugene Marshall
Witness
Location La Quinta
le size
2.5
ant number
Q-209 Q-210
reading in PSI
75 and 82.5
in G.P.M.
1455 and 15;
Location
1842 Graham
Hydrant number
Q-121
Static PSI
100
Residual PSI
96
Comments
Initial
December 17, 2013
Erika Bridges, E.I.T.
Graduate Civil Engineer
City of College Station
Planning & Development Services
1101 Texas Avenue South
College Station, Texas 77842
Re: La Quinta Inn & Suites - Water and Fire Flow Report- Lot 5R-2,
Graham road, College Station, Texas 77842
Dear Erika,
There is sufficient capacity in the existing water distribution system and sanitary sewer
collection system to support the above reference development and the associated proposed
improvements. The proposed improvements and projected demands for both water and sanitary
sewer are summarized below.
WATER SYSTEM IMPROVEMENTS;
This property has accessibility to existing public water for both domestic and fire use at
the following locations;
• An existing 12" C900 public water line located within the easement of the La
Quinta property along Graham road.
• Flow tests where obtained from two existing hydrants. The existing fire hydrant Q
-121 located at Private Driveway near Popeye property with a yield flow of 1,455
gpm, from the 2.5" nozzle with a residual pressure of 75 psi and a static pressure
of 101 psi. The static pressure was obtained from the existing fire hydrant Q-151
located near State Highway 6 (see attached Flow Test Report of COCS).
• Fire flow will be accommodated from the proposed two (2) fire hydrants located
in the La Quinta property. The new fire hydrant #: 1 will be placed on the
proposed 6" PVC water line. This 6" PVC water line will be tapped for a 2"
private domestic water service line which will accommodate water services to the
hotel development. The same 6" water line will be tapped for fire protection (see
attached C2 on site Utility Plan).
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Projected daily water demands are as follows (peaking factor of 4.0)
• The hotel development is anticipated to have an average water demand of 22 gpm
and a peak demand of 85 gpm. (see attached Cla).
• At average demand the proposed 2" domestic water line would experience an
approximate velocity of 2.17 ft/sec. with a pressure loss of approximately 0.1 psi.
At peak demand the proposed 2" domestic water service line would experience an
approximate velocity of 8.68 psi with a pressure loss of approximately 6.0 psi.
Both pressure losses will allow the distribution system to remain above the
minimum TCEQ domestic pressure requirements of 35 psi.
• The computed fire flow requirement was determined to be 4,000 gpm with a
building construction type of V-A and a gross square -footage of 49,728. With this
development an automatic sprinkler system will be installed as per the 2012
International Fire Code. Therefore the required fire flow will be reduced by 50%
to 2,000 gpm. It is anticipated that the automatic sprinkler system will require a
flow rate of approximately 250 gpm. As reported earlier the flow test conducted
by COCS illustrate that the minimum require comprehensive fire flow of 2,335
gpm can be achieved;
Peak Flow = 85 gpm
Automatic Sprinkler System = 250 gpm
Fire Flow Coverage = 2,000 gpm
( 85 + 250 + 2,000 ) / 2 F.H.=1,167.50 gpm
Note: 1,455 gpm was achieved during the flow test with acceptable residual
pressure.
2
OLD
October 28, 2013
Erika Bridges, E.I.T.
Graduate Civil Engineer
City of College Station
Planning & Development Services
1101 Texas Avenue South
College Station, Texas 77842
Re: La Quinta Inn & Suites - Water and Fire Flow Report- Lot 5R-2,
Graham road, College Station, Texas 77842
Dear Erika,
There is sufficient capacity in the existing water distribution system and sanitary sewer
collection system to support the above reference development and the associated proposed
improvements. The existing and proposed improvements and projected demands for both water
and sanitary sewer are summarized below.
WATER SYSTEM IMPROVEMENTS;
This property has accessibility to existing public water for both domestic and fire use at
the following locations;
• An existing 12" C900 public water line located within the easement of the La
Quinta property along Graham road.
• Flow tests where obtained from two existing hydrants. The exisitng fire hydrant Q
-121 located Graham road corner Brazos Valley Bank property near State
highway 6, yield a flow of 1,455 gpm, from the 2.5" nozzle with a residual
pressure of 75 psi and a static pressure of 101 psi. The static pressure was obtain
from the existing fire hydrant Q-151 (see attached Flow Test Re ort of CO01
• Fire flow will be accommodated from the existing fire hydran Q-121, Q-151In
d
the proposed fire hydrant placed on the 6" PVC water line ana
Quinta property. The proposed existing 6" PVC water line wi be tapped fora 2"
private domestic water service line which will accommodat water services to the
hotel development. The same 6" water line will be tapped f r fire protection (see
attached C2 on site Utility Plan). �� are- t0 r
� oe hti5ed
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Projected daily water demands are as follows (peaking factor of 4.0)
• The hotel development is anticipated to have an average water demand of 21.25
gpm and a peak demand of 85 gpm. (see attached PI).
• At average demand the proposed 2" domestic water line would experience an
approximate velocity of 2.17 ft/sec. with a pressure loss of approximately 0.1 psi.
At peak demand the proposed 2" domestic water service line would experience an
approximate velocity of 8.68 psi with a pressure loss of approximately 6.0 psi.
Both pressure losses will allow the distribution system to remain above the
minimum TCEQ domestic pressure requirements of 35 psi.
• B/CS UDGM requires that all commercial development provides a minimum fire
coverage of 3,000 gpm. It is anticipated that the automatic sprinkler system will
require a flow rate of approximately 400 gpm. As reported earlier the flow test
conducted by COCS illustrate that the minimum require comprehensive fire flow
of 3,515 gpm can be achieved;
Peak Flow = 85 gpm
Automatic Sprinkler System = 400 gpm
Fire Flow Coverage = 3,000 gpm
( 85 + 400 + 3,000 ) / 3 F.H. = 1,161 gpm
Note: 1,455 gpm was achieved during the flow test with acceptable residual
pressure.
2