Has anyone designed a sprinkler system for a parking garage with high denisty vehicle storage, aka car stackers? My feeling is that unlike an Ordinary Hazard occupancy of a typical garage, car stackers would need to be protected in accordance to the Storage and Commodities chapters of NFPA 13...
Does anyone have an opinion on what Occupany Hazard a beauty salon would be? I would normally refer to the Annexes in NFPA 13, Chapter 5 for the closest match, but nothing seems similar (maybe mercantile?). My feeling is that the fire loading is very low, and it could be considered Light...
All,
In NFPA 20, editions 2007 and after, the requirement for strainers on the suction of vertical inline pumps was deleted. Does anyone know the reason for the deletiion? Was it a pump performance issue? Or was it cost driven by owners/contractors?
In other words, if I still call for a...
All,
Is there somewhere in NPFA 13 that states that if incidental storage is limited to 8 feet in a Light Hazard Occupancy, the design criteria can remain for LH, and not have to meet the criteria for Miscellaneous Storage (up to 12 feet)? Our senior guy seems to think that it is somewhere in...
Forum,
What are requirements for having a sprinkler inside a gas storage cabinet, such as the type found in a laboratory? The room itself is fully sprinklered. I could not find anything specific in NFPA 45, 30 or 55 that requires a sprinkler.
Thanks.
Forum,
Is it a code requirement for sprinkler zones to match smoke zones in a hospital (NFPA 13, NFPA 101, AIA Guidelines, JCAHO, IFC?)? Or is it just common design practice?
Forum,
I am designing a combined sprinkler standpipe system with pressures in excess of 175 psi, but below 300 psi. As such, there will be pressure regulating valves on the hose connections to limit the static and residual pressures. I was planning on having PRV's on the sprinkler floor control...
Does anyone know how to calculate the K-factor (orifice opening) on a 2-inch main drain? I am trying to determine the water flow from the main drain at any given (static) pressure. I figured using the sprinkler formula Q=k*p^1/2 would be a close approximation. It is not for hydraulic...
