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What is the highest permissible height or elevation from the floor when installing an upright/pendent sprinkler (standard coverage k=5.6).

Is there a need for a pump to privide fexible expansion coupling in suction and its discharge. What are the parameters should I consider in providing this flexible coupling.Tnx

yes 3cio is correct, normally upright sprinklers are used in area's that is normally public and have no false ceiling such as carpark, mechanical room and etc. Pendent are used especialy if there's a false ceiling, thus it normally depends upon the architectural plan.

The minimum requirement of NFPA 14 for a single standpipe riser shall be 500 gpm at a minimum residual pressure of 100 psi (maximum of 175 psi), so if you have 2 riser it should be at 750 gpm capacity and again the remotest shall be 100 psi minimum. If you calculate this set the "remotest" at...

ok but if the only means to purge the agent is to use a ventilator, what is the design air change I need to use. Also what do you mean that once its goes off there's other problem to deal with?can you elaborate much clearly.thanks

thanks, but is there any section in ASHRAE or other related code that will give formula to calculate the airflow needed to purge the agent after the discharge? For example, if the door is open after the fire dissipates, how much time is needed to get back safely in the area or what if I turn on...

I have a room protected by FM200, since this is a clean agent and not harmful to the health is it really need to provide ventilation after the discharge, because we are mandate to provide ventilation and compute for the time needed to exhaust the discharge agent.please help.thanks.