where pipe pass through fire resistant structural elements, such as all shaft slabs, wall and floors designated as fire barriers, the opening made shall be sealed according to the appropriate degree of fire resistance of the walls and floor or not less than two hours fire rated.
fire barrier materials shall be based the standards of UL joints shall use in tumescent sealant, one part water based acrylic sealant.
large void in floor shall use fire stop compound, fast setting tested to provide up to a 3 hr fire rating.
plastic pipe shall use in tumescent pipe wrap to around the diameter