Simultaneous fires in an industrial building and/or warehouse, plus
in an airport hanger could add up to a large demand. Or even two
hangers. Any domestic or other draw off this system besides fire?
What you are trying to design is similar to a municipal water system
and those demand would be large compared to what we usually deal with.
At 06:46 AM 9/20/2010, you wrote:
Fire water mains of a propritary large development shall serve
multiple sprinklered buildings spaced well apart. Envision an
industrial plant, an airport or a university campus including
laboratories. The fire water mains shall also serve fire brigade hydrants.
In such cases we comply with a number of standards within NFPA (such
as 1, 13, 24, 14, 101 and the occupancy specific standards) or
similar. Add to this national regulations. Add to this hose
allowance. Even add to this stakeholder demand to cope with two
simultaneous fires.
In complying to all requirements, water demand tends to increase by
method of addition to seemingly unrealistic proportion. Each
standard incorporate a kind of safety factor, so in lack of a
systematic approach (like probability risk analysis) water demand is
unduly increased.
Any suggestion to a guide or a standard that addresses this?
Any experience on determining the demand at such large proprietary
fire water mains?
I am not asking about the water mains design. My concern is
assessment of water demand only.
Geir Jensen
COWI Fire
Technical Director
[email protected]<mailto:%[email protected]>
www.cowi.com
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Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, CT
860.535.2080
www.fpdc.com
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