Hose stream allowance and Fire hose cabinets
Hose stream allowance and Fire hose cabinets
(OP)
I have a question regarding Hose stream allowance. NFPA13- Table 11.2.3.1.2 provides information about Hose Stream allowance. Please let me know what exactly is hose stream allowance. If I provide 100 gpm hose stream will it be discharged at fire hose cabinet. To my Understanding I always considered Fire hose cabinets to be a part of Standpipe system. Please make me understand how hose stream allowance is different from Standpipe System.





RE: Hose stream allowance and Fire hose cabinets
A.11.4.2
The hose stream demand required by this standard is intended to provide the fire department with the extra flow they need to conduct mop-up operations and final extinguishment of a fire at a sprinklered property. This is not the fire department manual fire flow, which is determined by other codes or standards. However, it is not the intent of this standard to require that the sprinkler demand be added to the manual fire flow demand required by other codes and standards.
That should explain pretty well what the hose stream allowance is.
Travis Mack
MFP Design, LLC
www.mfpdesign.com
RE: Hose stream allowance and Fire hose cabinets
RE: Hose stream allowance and Fire hose cabinets
RE: Hose stream allowance and Fire hose cabinets
11.1.6.4 states "Water allowance for outside hose shall be added to the sprinkler requirement at the connection to the city main or a private fire hydrant, whichever is closer to the system riser."
When the fire dept. conducts mop up operations, they will connect to the nearest fire hydrant to do it. This where the hose allowance comes in to play.
RE: Hose stream allowance and Fire hose cabinets