This is two questions in one posting. A two for one deal. I'm designing a sprinkler system for a grain elevator that has been taken out of service, and now used as a museum. It will be cleaned and there will be no more grain. This building has a footprint of approx. 2000 sf. So crawlspace and main floor are 2000 sf each. The area housing the 7 grain bins is about 80 feet high and has a foot print of approx. 1000 sf (included in the main floor 2000 sf). At the very top there is a lower penthouse and upper penthouse (about 300 sf each). The building area is small, but due to sloped roofs and obstructions, requires about 110 sprinkler heads.
The first question: Although it is classified as a museum, I'm designing it for OH1 occupancy. The entire building is exposed wood construction and very dry. If there is a fire the fuel load is very high. Any comments? Now there is a crawlspace area under the bins that is combustible and not accessible. The owner does not want this area to be sprinklered. So kicks in the 3000 sf requirement. Second question: Should I include heads a diffent levels in my calcs.? The city supply (110 static pressure) is enough to supply about 30 sprinklers at different levels at the top (excluding the penthouses which are not open to the rest of the building). Should I be includng additional sprinklers from the penthouses and lower levels? If I did include additional heads, the city supply is insufficient. But the owner (who is the City) has told me that if the city supply is not enough, it will be boosted by the responding fire department and they will issue a variance to that effect. So the third question (I cheated there were three), which would apply to other buildings also that have high pressure water supply. Do I need a pressure reducing valve? The fire dept. boost is typically over 100 psi. Tony _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
