You shouldn't need a roof hydrant if you are under 200' from your last fire hose valve to the furthest point on the roof, but you do need to put the fire hose valve at the highest landing to the roof hatch. NFPA 14 2010 7.3.2 Class I systems shall be provided with 2½" hose connections in the following locations..... (5) At the highest landing of stairways with stairway access to a roof, or on roofs with a slope of less than 4/12 where stairways do not access the roof.
-----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, March 24, 2015 12:06 PM To: [email protected] Subject: Roof Hydrant Valves - Multi-Story Building We are having some differences of opinion with a local fire marshall requesting the installation of roof hydrant valve. We are protecting a 4-story building that will be fully sprinklered utilizing a Class 1 - combination standpipe in the north stairwell and south stairwells. Two standpipe stacks were provided to get the 200' travel distance across the building. Hose valves are located on intermediate landings. Near the center of the building on the top floor there is a permanent ladder leading to a roof hatch. The owner does not intend to utilize the roof for any type of occupancy, only service for MEP. Since the owner does not intend to use the roof for occupancy, our travel distance from our standpipe through the roof hatch is approx. 180'-0", and our roof slope is less than 4/12 we were not planning on installing any additional hose valves / roof hydrant valves in the small room where the roof hatch is located. Were we right by leaving out the hose valve in this roof on the original design? Thank you _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
