(A) General. Hollow unit masonry shall be laid with full face shell mortar beds and head and end joints, shall be solidly filled with mortar for a distance in from the face of the wall or unit not less than the thickness of the longitudinal face shells.
(B) Bonding. Where two or more hollow units are used to make up the thickness of a wall, the stretcher courses shall be bonded at vertical intervals not exceeding 34 inches by lapping at least four inches over the unit below or by lapping at vertical intervals not exceeding 17 inches with units which are at least 50% greater in thickness than the units below; or by bonding with corrosion-resistant metal ties conforming to the requirements for cavity walls. There shall be one metal tie for not more than each four and one-half square feet of wail area. Ties in alternate courses shall be staggered and the maximum vertical distance between ties shall not exceed 18 inches and the maximum horizontal distance shall not exceed 36 inches. Walls bonded with metal ties shall conform to the requirements for allowable stress, lateral support, thickness, height and mortar for cavity walls.
(Prior Code, § 9-115) (Ord. 94-11B, passed 4-21-1994)