How to calculate the water delivery time in dry standpipe system

[Kcann88]

I need to provide a calculation showing the water delivery time in a dry standpipe system for a marina dock. Does anyone know what the calculation is? I cannot find anything on this topic anywhere.

Thanks

 

[stookeyfpe]

Is it an automatic or manual standpipe? Second question: why? I can't recall any instance where NFPA 14 requires a water delivery time.

 

[Kcann88]

Manual. The town is requiring it for some reason.

 

[skdesigner]

NFPA 14-2010 defines a manual dry standpipe system as "A standpipe system with no permanently attached water supply that relies exclusively on the fire department connection to supply the system demand." No matter what mathematical method you elect, the answer will always be "it depends what fire truck is pumping into the other end".

Were it an automatic dry standpipe system in excess of 750 gal, NFPA 14 5.2.1.2.2 would require that water be delivered to the most remote hose connection within 3 minutes.

Perhaps the AHJ is confusing manual and automatic standpipes?

R M Arsenault Engineering Inc.

http://www.rmae.ca

 

[chicopee]

If the system is built, test it by flowing the inspector test connection placed at the most remote point of the sprinkler system. Insurance companies have requirements so contact them, perhaps their specialist can help.

 

[Kcann88]

Its not built its in design. Thanks for the help I will check out the insurance thing

 

[TravisMack]

Viking has a generic fluid delivery calculation program. It is not as accurate as the Tyco FDT program, but should suffice for something like this. Just go to

http://www.vikingcorp.com/

and search for it.

Travis Mack
MFP Design, LLC

http://www.mfpdesign.com