I had one where the saw tooth roof system was used, it was actually baffles for sound but sprinklers and lines were run behind them.
The other option which may or may not work is to invoke the Sprinkler Exemption section out of the IBC. As much as we like to see buildings fully protected, there are cases where is impractical or at times creates a much greater hazard than a fire would. (yes I've had a project where a fire in the building caused less monetary damage than sprinkler discharge on the process equipment) So If you apply Exemptions (2) and (4) out of IBC 903.3.1.1.1 (using the 2012 edition here) IBC 2012 903.3.1.1.1 Exempt locations. Automatic sprinklers shall not be required in the following rooms or areas where such rooms or areas are protected with an approved automatic fire detection system in accordance with Section 907.2 that will respond to visible or invisible particles of combustion. Sprinklers shall not be omitted from any room merely because it is damp, of fire-resistance-rated construction or contains electrical equipment. 2. Any room or space where sprinklers are considered undesirable because of the nature of the contents, when approved by the fire code official. 4. Rooms or areas that are of noncombustible construction with wholly noncombustible contents. Now of course there is a trade out of smoke detection for sprinklers which in a gun range isn't going to work either. There is no real justification for sprinklers in the range areas, maybe at the trap end and maybe at the staging end but down the lanes, there is none. But if the AHJ insists on sprinklers then the owner or GC needs to provide some means of protecting the piping and the sprinklers otherwise SIPA or DIPA with dry pilot heads not smoke detection for the trigger is probably going to be the only viable choice. Craig L. Prahl Fire Protection Group Lead/SME CH2MHILL Lockwood Greene 1500 International Drive Spartanburg, SC 29303 Direct - 864.599.4102 Fax - 864.599.8439 CH2MHILL Extension 74102 [email protected] -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Michael Hill Sent: Friday, March 04, 2016 12:56 PM To: [email protected] Subject: RE: Shooting Range I have put sprinklers in several shooting ranges (Government made me do it). They were all double interlock preaction systems with piping run above the steel roof/ceiling of the range. They all used concealed type sprinklers. One of the ranges utilized a saw tooth ceiling/roof to protect the heads. Two of the systems have been hit and put into trouble (including the saw tooth one - hit by a ricochet). Luckily no water has been released. I know one system that has been hit several times and the building has turned the system off. Mike Hill -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Jay Stough Sent: Friday, March 04, 2016 12:43 PM To: Sprinkler Forum <[email protected]> Subject: Shooting Range I am looking for guidance on designing sprinklers in a shooting range. Something about little glass bulbs or solder links in an area that has high velocity projectiles, seems not right. Everything in each alley (including the separation walls) are non-combustible. The only thing combustible at the end of the range is shredded rubber used to absorb the impact after the target. The rubber is treated with flame retardant and replaced every three months. Each alley has a series of baffles below the roof that are at a 45 degree angle for sound. The designer of the facility has done many of these without sprinklers in this area of the building. He has even shot tracers to see how the flame retardant hold up and the flame goes out is less than 20 seconds. A fire marshal is saying to sprinkler everything. If you have any insight, I am listening closely. *Jay Stough* NICET IV LAYOUT NICET III ITM _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
