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707.8 Joints.
Joints made in or between fire barriers, and joints made at the intersection of fire barriers with underside of a fire-resistance-rated floor or roof sheathing, slab or deck above, and the exterior vertical wall intersection shall comply with Section 715.
707.9 Voids at intersections.
The voids created at the intersection of a fire barrier and a nonfire-resistance-rated roof assembly or a nonfire-resistance-rated exterior wall assembly shall be filled. An approved material or system, or a material consistent with the construction requirements of the fire barrier, shall be used to fill the void, and shall be securely installed in or on the intersection for its entire length so as not to dislodge, loosen or otherwise impair its ability to accommodate expected building movements and to retard the passage of fire and hot gases.
707.10 Ducts and air transfer openings.
Penetrations in a fire barrier by ducts and air transfer openings shall comply with Section 717.
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