Re: Questions about FDC's

2019-05-28 Thread John Denhardt
In a 13 system, the FDC is considered a supplementary supply. 4” for a land based system, 6” if a fire boat can supply it. The FDC is not sized pee 14 unless a standpipe is involved. The committee clarified this several editions ago. John John August Denhardt, P.E. Strickland Fire Protection

Re: Questions about FDC's

2019-05-28 Thread Matthew J Willis
I thought that was one of the unwritten understoods.. It was just settled that 250 was minimum accepted? R/ Matt On the road Original message From: Steve Leyton Date: 5/28/19 6:51 PM (GMT-07:00) To: sprinklerforum@lists.firesprinkler.org Subject: Re: Questions about FDC's

Re: Questions about FDC's

2019-05-28 Thread Steve Leyton
Remember too that the number of inlets and the flow rate are only marginally related. One of our main concerns on 14 is that one or more inlets could be damaged or obstructed so a requirement that you put 4 on a building doesn't exactly correlate to 1,000 GPM. In fact the NFPA Research Foundati

Re: Questions about FDC's

2019-05-28 Thread Matthew J Willis
Correct. No flow requirements for 13. 14 is 250 per 2,5" inlet the number to meet Standpipe demand. R/ Matt On the road Original message From: "Travis Mack, SET, CFPS, CWBSP, RME-G" Date: 5/28/19 6:30 PM (GMT-07:00) To: sprinklerforum@lists.firesprinkler.org Subject: RE: Qu

RE: Questions about FDC's

2019-05-28 Thread Travis Mack, SET, CFPS, CWBSP, RME-G
The FDC is to supplement, not replace in a fire sprinkler system. There is no requirement to upsize per NFPA 13. NFPA 14 has different requirements. Check that standard for inlet number. You may need bigger size to accommodate flows. Travis Mack, CFPS, CWBSP, R

Questions about FDC's

2019-05-28 Thread jvankolken
We were having some discussions about FDC What is demand for a typical FDC (4x2-1/2x2-1/2) 500 gpm or sprinkler system demand? NFPA 13 says the min. pipe is 4", when do I need to upsize the piping for a FDC. If the system demand is 1500+ gpm should I be putting in a larger FDC?

RE: [EXTERNAL] RE: Pump & Tank Fed From a Well

2019-05-28 Thread Prahl, Craig/GVL
When doing a thumbnail estimate like this, I use Density X Design Area X 1.25 to estimate a flow rate. So 0.10 X 1500 X 1.25 = 187.5 gpm. Rounding up, 190 GPM (since we're just estimating) X 30 minutes = 5700 gallons. For a pump I'd pick something around a 150 gpm rate for this. Your results