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Roof diaphragms shall be anchored to masonry walls with 1/2 -inch-diameter (12.7 mm) bolts, 72 inches (1829 mm) o.c. or their equivalent. Bolts shall extend and be embedded at least 15 inches (381 mm) into the masonry, or be hooked or welded to not less than 0.20 square inch (0.02 m2) of bond beam reinforcement placed not less than 6 inches (152 mm) from the top of the wall.

Related Code Sections

2109.7.3.3 Masonry, Roof Diaphragms
Roof diaphragms shall be anchored to masonry walls with 1/2 -inch-diameter (12.7 mm) bolts, 72 inches (1829 mm) o.c. or their equivalent. Bolts shall ...
12.3.1.2 Diaphragms,
Floor and roof diaphragms shall have a thickness not less than that required for floor and roof elements in other parts of this Code ...
1615.3 Structural Design, Lateral Bracing
Floor and roof diaphragms or other horizontal elements shall be tied to the lateral load-resisting system ...
1616.3 Structural Design, Lateral Bracing
Floor and roof diaphragms or other horizontal elements shall be tied to the lateral load-resisting system ...