hi
the maximum velocity in fire fighting piping is 20 ft/sec as NFPA 20
and 35 ft/sec in inspection,test and stationary pumps as NFPA1963
ANY QUESTION ?
I AM READY FOR HELP
you have 5 starways only one have access to the roof, NFPA14 state that "At the highest landing of stairways with stairway access to a roof, and on the roof where stairways do not access the roof."
it state stairways do not access the roof. but you have one stairway access the roof,so you will...
Why you don't consider diaphragm type flush valves to be quick closing.I consider flush valve is the major quick closing valve,and i cosider ball valve quick closing valve.
the quick closing is relation with time,that mean any valve take small time to close is quick response.
i put water hammer...
