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
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