scenario:
820,000 square foot building
4 levels open to each other.
multiple occupancy, non-separated
more than 10,000 occupants
expected building service life: 75 years.
Type I-B (IBC) II (2 2 2) NFPA construction
Code: NFPA set
the water supply to the sprinkerl lateral is looped and redundant, but
after that, we are unique. that is, we currently have on the
design table,
1 fire pump and
1 fire lateral into the building.
My fear is not so much that the fire lateral or spool piece
will fail, which in
75 years is a possibilty with high chloride content soil,
but that some other trade will break the lateral while
digging around for their own system's maintenance.
Too conservative in the design choice of redundant
fire pump and laterals? Or is it normal and reasonable
design for this occupancy and construction
to have 1 sprinkler lead-in and 1 fire pump.
scot deal
excelsior fire engineering
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