1613.4.3 Covers wider than 5 inches (127 mm).
BC § 1613.4.3
When a building separation wider than 5 inches (127 mm) is created pursuant to Section 1613.4, such separation, at the roof level of the proposed new building, or at the roof level of an existing adjoining building where if that building is lower than the proposed new building, shall have a horizontal cover/closure that conforms with the following: 1. The cover/closure material shall be non-combustible; and Exception: The cover/closure material used shall be permitted to be combustible material in accordance with Section 1510.9 if all the material on the appropriate roof conforms to the limitations therein, there are no masonry openings in either wall abutting the building separation, and both buildings are non-combustible.
2.The cover/closure shall be capable of withstanding the roof live load of 30 psf (1.43 kPa), securely fastened to the new building, and be of a type that would be capable of preventing unauthorized or accidental access to the space.
