I am wondering when a fire watch becomes required. I have always gone with if the sprinkler system is out of service for 4 or more hours in a 24 hour period, a fire watch is required because that is what the local AHJ requires. Now we're doing work out of town and I can't seem to find this...
Has anyone dealt with pressure reducing valves? This is the first time I've had to deal with them. I'm in the process of upgrading a system to a new fire pump. The AHJ requires that the pump be able to fully supply the standpipe system (which the old pump didn't do), resulting in pressures...
When using a lake or pond as a water source for a sprinkler system, what is the best way to go about doing it. This is my first project where city water is not available.
The lake is lower than the buildings, and according to NFPA 20 6.1.2 Centrifugal pumps shall not be used whre a static...
Are there any exceptions in NFPA 13 that would allow for a draft stop to be eliminated from an opening in a floor where a water curtain is required. I know about the large opening exception and it doesn't apply to this situation. What we have is a 2 story lobby open to the floor above with the...
Anyone have any thoughts on installing a test header for a 1000gpm pump inside the building where the hoses will need to be run into a corridor, and out a door to get to the exterior? I personally think it's an awful idea, but I can't find any code that actually prohibits it.
What are the advantages/disadvantages of a dry pipe system vs an antifreeze system? The existing building I'm working with has 2 seperate unheated combustible concealed spaces on each end of the building one 1300 sf and the other 950 sf. It also has an exterior overhang that will require an...
