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The project is at Duke University. The floor opening goes from level 0 to level 5M. the stair is only on the left hand side of the opening. there is no riser on the steps, there is about a 6" gap in between. I don't see how it would even collect heat to activate a sprinkler.

revised. please see the attachmenthttp://files.engineering.com/getfile.aspx?folder=43ab2aa6-a38e-4856-9a10-8aad076756c2&file=stair.pdf

please see the attached stair detail. the stairs have open risers, how would it collect heat? I have coverage on the landings adjacent to each level.

There is a job that I worked on back in 2011, the engineer is saying that we are required to protect under the open stair on each level. we have sprinkler protection around the floor opening. the stair case is off to the far side of the opening. the heads around the opening are not obstructed...

I had a question about the ground being oiled prior to a water tank being filled. is this to stop the water from seeping into the ground? and where in 22 is this located? Thanks

Thank you. Yeah, i do have hydrants down stream of the pump.

I am looking in the book for the duration of the system supply. I see that the duration varies form what I can see it goes from 60-150 minutes. we are working with the 2002 edition of NFPA 13. I have a Class IV commodity and according to 12.2.1.2 it says i need 150 min supply. I just want to...

I am wanting to know if i include my 500 hose in the calculations if i am going to be using a fire pump and tank. i am just running a calc to make sure what the system demand is. I don't want to give the pump guy a false figure. I know we will need a tank on this project and from what i...

When extending the coverage from the higher hazard 15' into the lower hazard, how do you separate the two systems? And am I allowed to use diferent k-factors in the lower hazard area? I have a warehouse with rack storage attached to an OH GP 2. Is there a way that I can avoid spacing into the...

*an*

is this a ESFR calc?

I have a system that requires 500 gpm for my hose. it is an high piled area with ESFR heads. I also have to add 250 for the hydrants on the loop by the tank. where does it reference in NFPA 13 2002 the duration of water? My overall system demand is 2,198 gpm. If we were to hire an FPE, do you...

when trying to figure out the pressure rating for a pump and not wanting to exceed 175 psi, do I included the city supply + the psi of my pump rating? I want to give them the most bang for their buck without having pressure relief valves. The tank itself doesn't provide pressure, just for the...

do you still have to take the city pressures in account when using a water tank?

what determines the fire pump shut off pressure? from doing all of my calculations i have came up with 2198 gpm @ 102.46 psi. I have it figured out that a 1500 gpm pump will supply me with the required rated flow at 150% which is 1465. I am trying to avoid 175 psi for pressure relief valves. I...

I am not designing the hydrants or the layout of them. The ESFR & OH will be in two different buildings, so fighting the fire one at a time shouldn't be an issue. With that being said, a combined standpipe and fire sprinkler system with a .20 shouldn't be as demanding as the ESFR correct? I have...

I have a campus that I am designing a fire pump and tank for. I have an ESFR system along with various OH GP 1 & 2 systems. The hose requirement for the ESFR is 500 gpm. Do I have to add the hose for the 750 gpm standpipe system thats going to be installed in the OH building? Or would you think...