I am working on a project which is a retail store being renovated for a new
tenant. The previous retail tenant had been in the space for at least 20 years.
The existing sprinklers below the ceiling (to remain) are spaced at 10 ft in
one direction and alternate 10 ft and 14 ft (10-14-10-14…) in the other. I made
the comment that the sprinkler spacing exceeds the 130 max requirement of NFPA
13 and it needs to be modified. The architect (and his “value engineer”)
decided that 1/2 the distance on one side is 7 ft and on the other side is 5
ft, which equals 12, times 10 ft in the other direction equals 120 sqft and all
is fine. The Fire Marshal is kind of buys into it because he is new and his
department blew it 20 years ago. Unfortunately 13 doesn’t address their being
to possibility of different spacings between sprinklers (such as ‘maximum’
distance between sprinklers when determining S and L). Any thoughts, ideas or
references I am missing as I walk into this battle?
Todd G Williams, PE
Fire Protection Design/Consulting
Stonington, CT
860-535-2080 (tel:860-535-2080) (ofc)
860-554-7054 (tel:860-554-7054) (fax)
860-608-4559 (tel:860-608-4559) (cell)
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