Re: Minimum Lead-in Sizing

Something else to consider. NFPA-13 requires that the water meter be UL listed for fire so you'll need to check with the local water dept to see if they stock a 2-inch meter that is UL listed for fire. The small UL meters are available but the water dept may not use them in their area. Some

Re: Storage Occupancy - Pipe Schedule

I think the quote about "...storage, 21-feet in height or less" is incorrect. I think it should be 12-feet or less.Many many years ago, I ran some hydraulic calculations on pipe schedule systems and found that they were capable of producing densities in the old OH2 to OH3 range of .19 and

Re: Underground Dry System Pipe Type

Since the pipe is running underground, is PVC or CPVC acceptable? Those are already used for underground piping for free-standing FDC's.Just trying to think outside the box.rick On Monday, February 19, 2018 8:06 PM, Bruce Verhei wrote:

Re: Covered Restaurant Seating Area

I have to agree with Steve.NFPA-13 requires sprinklers in all areas unless specifically allowed to be omitted. This exterior covered restaurant scenario is common in Dallas, and sprinklers are required. The only exceptions that I know of are those that were constructed without

Re: 13D with FDC

I guess the AHJ can require the FDC if he wishes, and it's part of his local ordinance. Also he may be requiring the 200-psi hydrostatic test cause 13D only requires testing to city pressure. Doesn't make sense to have the FDC if the system is not pressure tested for pumper discharge pressure.

Re: standpipes in fire separated building

Greg,I believe the intent of NFPA-14 is to include flow from all the standpipes within a building that the fire dept would connect to in a fire emergency. If the floors in the parking garage do not communicate with hallways and doors to the floors in the high-rise building, then the fire dept

Re: Pressure Relief Valve on Wet Pipe System

Brad, In response to your question why. Yes, the relief valves were first required on only the gridded systems due to the lack of trapped air in the systems. As an insurance inspector in the summertime here in Texas around the mid-1980's, we started to find existing gridded systems that were

Re: Underground Dry Pipe

what kind of pipe?...good question. Okay, I'll stick my neck out...thinking outside of the box. CPVC is not listed for dry pipe use...but why? (1) is this for just overhead piping where the water in pipe of a wet-pipe system will help keep the pipe from failing during a fire? (2) or is this

Re: Pandora's Box

Okay, since Roland mentions Dallas water dept/utilities (DWU), I thought I'd contribute to this discussion. Contrary to what Roland has inferred, DWU actually is very understanding and has tried to address the reliability of the domestic meters during high flow (fire) conditions. Prior to