Smoke and Heat Vents. Smoke and heat vents should be provided in
buildings where a high rate of heat release is anticipated during a fire.
When required in buildings without automatic sprinklers, smoke and heat vents
shall be arranged to operate automatically in accordance with NFPA 204M, Smoke
and Heat Venting. When required in buildings with automatic sprinkler
protection, smoke and heat vents shall be arranged to operate in the manual
mode only. In buildings with automatic sprinkler protection, skylights are
the preferred method of providing manual smoke and heat vents.
Plastic Pipe and Conduit
Penetrations. Penetrations by plastic pipe or conduit through fire-
rated walls, partitions, shafts, and floors shall be fire-stopped by an
approved or listed method in accordance with ASTM E814 or UL 1479, Safety Fire
Tests of Through-Penetration Firestops.
Prohibited Locations. Plastic pipe and conduit shall not be
installed in exit stair enclosures, or in air plenum spaces unless
specifically listed for that application.
Fire Retardant Treated (FRT) Plywood
New Construction. Use of FRT plywood is prohibited, except as
permitted by the UBC. FRT plywood shall not be used in any part of the roof
or roofing system.
Existing Construction. FRT plywood installations should be
regularly inspected for structural integrity. Replacement of damaged FRT
plywood may require additional fire protection measures if FRT plywood is
replaced with more combustible materials.