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kumskip
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Join Date: Apr 2008
Posts: 15

Fire Water Storage

02/21/2009 9:59 AM

NFPA 13 specifies that the volume of fire water storage shall be computed based on 30 to 60 mins duration. My question is: what flow rate shall I consider in my computation of storage volume? should it be the rated flow of the fire pump? Please note that our fire pump is designed to provide water to separate buildings in our manufacturing plant complex.
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ozzb
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#1

Re: Fire Water Storage

02/21/2009 10:43 AM

Rated flow thru sprinkler head at pump pressure. Times the number of heads.

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TexasCharley
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#2
In reply to #1

Re: Fire Water Storage

02/21/2009 7:53 PM

there's a GA.

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benbenben
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Join Date: Feb 2009
Location: florida
Posts: 72
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#4
In reply to #2

Re: Fire Water Storage

02/22/2009 4:12 PM

yes, of course, there's a GA....

Wait, you mean GA as in:

General Agreement?

Gibberellic Acid?

Glutaraldehyde?

Gay Asian?

Gallium?

Tabun?

Graphics Adapter?

Granuloma Annulare?

Ground Antenna?

Globus Alliance?

Genetic Anomaly?

Guano Apes?

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Age > IQ
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Join Date: May 2008
Posts: 39
Good Answers: 1
#6
In reply to #4

Re: Fire Water Storage

02/23/2009 1:29 PM

Fire water = Good Alcohol

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ShoeShineBoy
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Join Date: Feb 2009
Posts: 47
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#3

Re: Fire Water Storage

02/22/2009 10:05 AM

That puddle is deeper than it looks..please consult a licensed fire protection specialist for the proper calculations.This is a life-or-death situation, and you are exposing yourself to untold liability if you get it wrong.If you cannot afford to lose, don't gamble.

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Old Coal Man
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Engineering Fields - Civil Engineering - Member Engineering Fields - Construction Engineering - Member Engineering Fields - Mining Engineering - Member United States - Member - Member Popular Science - Weaponology - Member Hobbies - Target Shooting - Member Hobbies - Car Customizing - Member

Join Date: May 2008
Location: Cary, NC, USA
Posts: 131
Good Answers: 7
#5

Re: Fire Water Storage

02/23/2009 8:10 AM

This is mostly dependent upon the municipality. We require 500 gpm for residential. Also, don't forget to include safety factor. Call up your local muni and ask to speak to someone in the Inspections or Permits Department. Likely, they will give you what you are looking for. Otherwise search google for governmenatl requirements/codes.

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RunsDownHill
Active Contributor

Join Date: Jan 2009
Location: Washington State, USA - the Soggy half
Posts: 15
Good Answers: 1
#7

Re: Fire Water Storage

02/23/2009 3:25 PM

Each municipality and each structure has a different fire flow requirement. Be careful of just assuming that the 30-60 minute duration is the final answer. Depanding on the location and structure, the fire flow may range from 500-4000 gpm and the duration may be as high as 4 hrs. I've seen clever designers change the construction type (Wood to Steel etc) for their structure to reduce the fire flow required for the site. The reduced cost of storage more than offset the change in cost for the construction. Lots of different ways to get to the real issue, a local fire protection specialist will know what works in the local jurisdiction of the top of his head. Might be worth an hour of consultation.
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Age > IQ (1); benbenben (1); Old Coal Man (1); ozzb (1); RunsDownHill (1); ShoeShineBoy (1); TexasCharley (1)

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