3B Public Hearing 2010 1115 - Laserfiche WebLink

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Section 7 -5 -865 INFORMATION REOUIRED ON PLANS (a) General In addition to the seismic analysis required elsewhere in this Article, the licensed engineer responsible for the seismic analysis of the building shall determine and record the information required by this section on the approved plans. (b) Construction Details. The following requirements with appropriate construction details shall be made part of the approved plans: (1) All unreinforced masonry walls shall be anchored at the roof level by tension bolts through the wall as specified in Table Al -E of Appendix A or by approved equivalent at a maximum anchor spacing of six feet. All unreinforced masonry walls shall be anchored at all floors with tension bolts through the wall or by existing rod anchors at the maximum anchor spacing of six feet. All existing rod anchors shall be secured to the joists to develop the required forces. The Building Official may require testing to verify the adequacy of the embedded ends of existing rod anchors. Tests when required shall conform to Section 7 -5- 1155A(h). When access to the exterior face of the masonry wall is prevented by proximity of an existing building, wall anchors conforming Table Al -E may be used. Alternative devices to be used in lieu of tension bolts for masonry wall anchorage shall be tested as specified in Section 7 -5 -860. (2) Diaphragm chord stresses of horizontal diaphragms shall be developed in existing materials or by addition of new materials. (3) Where trusses and beams other than rafters or joists are supported on masonry, ledgers or columns shall be installed to support vertical loads of the roof or floor members. (4) Parapets and exterior wall appendages not capable of resisting the forces specified in this Article shall be removed, stabilized or braced to insure that the parapets and appendages remain in their original position. (5) All deteriorated mortar joints in unreinforced masonry walls shall be pointed with Type S or N mortar (Masonry cements shall not be used). Prior to any pointing, the wall surface must be raked and cleaned to remove loose and deteriorated mortar. All preparation and pointing shall be done under the continuous inspection of a special inspector certified to inspect masonry or concrete. At the conclusion of the project, the inspector shall submit a written report to the Building Official setting forth the portion of work inspected. (6) Repair details shall be prepared for any cracked or damaged unreinforced masonry wall required to resist forces specified in Appendix A. ORDINANCE NO. 2010-018 9