RE: Spacing ESFR-17 Sprinkler at new interior wall

I always handle these situations in this manner: If I can’t find something in the code/standard to support my position, then I’m not going to be the one signing off on it. If you have an FPE that is willing to sign off and take the liability for it, then let them make that call. If the contrac

Re: Spacing ESFR-17 Sprinkler at new interior wall

There are no obstructions to the spray pattern on the side away from the wall. Also was told the area immediately below the sprinkler in question is an 10' isle way for forklift travel with a steel guideway 2' away from the wall so the nearest possible storage is at least 8' away from the row of

RE: Spacing ESFR-17 Sprinkler at new interior wall

Just because someone “signed off” on it does not make it right. In the event that there is a fire and a high dollar commodity is consumed (IE: Corona vaccine), and the special expert comes in and immediately sees a blatant code violation….. (Then again if it is an FM property and they approved th

Re: Spacing ESFR-17 Sprinkler at new interior wall

Just talked to the salesman that sold the job. He says that this room is identical to one adjacent to it and that the previous contractor (which did the original roof installation) did exactly as I was proposing. Don't think they were right but they are a 10 times bigger company than the one I a

RE: Spacing ESFR-17 Sprinkler at new interior wall

I’m not saying it won’t work. But, there is nothing you have to hang your hat on should there ever be an issue. I always tell customers to figure moving 3-5 sprinklers on a branch line whenever you have a wall cause ESFR issues. Travis Mack, CFPS, CWBSP, RME

Spacing ESFR-17 Sprinkler at new interior wall

Have a job with existing ESFR-17 pendent sprinklers at the roof. Joist spacing is 5' oc with sprinklers centered between every other joist, thus 10' oc. The lines are on 10' centers so nice 100 sq. ft. per sprinkler. Tennent comes along and builds a room exactly 60' wide x  60' deep. Basically 1

Re: Minimum Lead-in Sizing

CPVC has been used for U/G for quite a while now. Has either the NFPA or manufacturer’s guidelines been updated to include measures for line locating? We used City engineering standards for any underground in easement along public streets to get it until local industry more or less made it stand

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 wat

Re: [EXTERNAL] MPP Floor Panels

Is there a 1 1/2” to 2” aerated concrete layer on top of the flooring? Best Sent from my iPhone > On Mar 19, 2020, at 11:35, Prahl, Craig/GVL via Sprinklerforum > wrote: > > Sounds like the flooring wouldn’t be a determining factor for sprinklers but, > what is being routed through the sub-

RE: [EXTERNAL] MPP Floor Panels

Sounds like the flooring wouldn't be a determining factor for sprinklers but, what is being routed through the sub-floor area might. Craig Prahl | Jacobs | Group Lead/SME - Fire Protection | 864.676.5252 | craig.pr...@jacobs.com | www.jacobs.com

MPP Floor Panels

Does anyone have experience with Mass Plywood Panel (MPP) flooring system? The project I'm looking at has this floor system with a non-combustible raised floor over top of it. The space is approximately 14" deep. The manufacture has done fire testing and the MPP has a 2-hour floor rating and a 1

RE: [EXTERNAL] RE: Boat and RV storage units

That (shielded fire), I believe is why FM Global requires Hazard Category 3 (HC-3) for “Highway trailers, trucks, boxcars, some mobile homes or similar metal vehicles with combustible interiors with potential for shielded fire”. HC-3 is 0.3 gpm/ft2 over 2500 sq ft for ceilings up to 30’ (wet-pipe