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Started a new sprinkler design for a "FIVE BELOW", the retail store is about 8,000 SQFT 22ft top of steel, one of eight stores in a new mall. I would have used a OH2 design until I Googled five below "Images" Group A plastics on sales walls to 10 ft. and through the front retail sales area...

Thanks I new I had seen something some were, I thought the shield was to help collect the heat better because the duct work was spiral. Thanks for the HELP

I thought I read some where that the spacing under the spiral Duct work was limited to 8 Ft. spacing. The building is under 30ft. storage to 20ft. I also thought I read you need a Baffle above the sprinkler the same Dia. as the duct work for a heat shield. Sprinklers on Br Lines at roof have a...

What is the requirement for having to use multi floor control valves with valve, flow switch and drain.(Sprinkler only standpipe) Light or ordinary two-four story buildings, I know some four story building have a height requirement.

I noticed Large box warehouses, ESFR system with Fire Pumps that have remote Fire Department Connections that are run with 6" to the Storz Connection. I referenced NFPA 13, 2010 Addition and did not find a specific 4" or 6" requirement. I lookup the friction loss for 4" (1500 GPM) and its not...

I do a ESFR system about once a year, have to review notes, and read up on NFPA 13, it seems like the same water blockage as the leading edge of bar joist requirement. Working with steel Mfg. on our piping locations, and His Min. requirements on wind bracing. His min. distance piping to a joist...

2" or less

K17 ESFR Pendent

Wind bracing run 12" off ESFR branch line at bottom of bar joist run continuous is this still OK

ESFR SYSTEM 40FT building, ESFR 17 sprinklers, 100 sqft. BAYS 52FT, Heads 10Ft on center, Lines 10Ft on center. Line 12" OFF the leading edge of Truss, Truss more that 70 percent open. Is this OK.

Where would you find minimum require site fire flow. I looked thru NFPA 24 and only found reference to Master Stream (250 gpm) Chapter 9).

Drawings are still in the design phase. Our state plan review is a rubber stamp joke.....all about the money, fire marshal is AHJ with every little knowledge of fire protection design (except the ones that attended a two week course, there experts). The building is 160,000 SQFT with four ESFR...

I have a 6x4 gridded ESFR sprinkler system with 2" or 2 1/2" branch lines. The GC decided not to run the underground main around the building to the hydrant. he wants me to run the hydrant off the 4" floating main or the 6" feed main over to the incoming 6" underground that supplies the hydrant...