you will need to check the CBC for amendments but the model - IBC code
allows trade-ups in residential occupancies for almost all aspects
except for area increase and when the passive fire rating is reduced.
If memory serves me right, when reducing the fire rating with a 13
system, you don't get ANY OTHER trade-ups. So things like maximum
allowed travel distance is increased and minimum flame spread rating
is reduced.
Roland
On Sep 15, 2010, at 4:13 PM, Gregg Fontes wrote:
What if any section in CBC allows trade-offs when using a 13R system
in
Group R occupancy (Apartment Buildings)? Or if trade-off are
taken, then
the system must be per 13? 2007 CBC state in Chapter 5 that
trade-offs/increases are allowed with when a fire sprinkler system is
installed per 903.3.1.1, which is NFPA 13 sprinkler systems.
903.3.1.2 is
NFPA 13R sprinkler systems.
Thanks,
Gregg Fontes
Cen-Cal Fire Systems, Inc.
209-334-9119
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