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ORDIN~/qCE NO. NS-15'18 Page Nine 4e Se Tension bolts and tension dowels ex- tending entirely through unreinforced masonry walls secured with bearing plates on far side of wall with at least 30 sq. inches of area.(2) 1200 lbs. per bolt. Reinforced masonry infilled openings in existing unreinforced masonry walls with dowels to match reinforcing. Same value as for un- reinforced masonry walls. e e Masonry piers and walls reinforced per U.B.C. SectiOn 2418 and designed for tributary loads. Concrete footings, walls and piers reinforced as specified in Chapter 26 and designed for tributary loads. Foundation pressures for structures exhibiting no evidence of settlement. FOOTNOTES: in Section 8-2006. minimum in diameter. (1) Bolts and dowels to be tested as (2) Same values as speci- fied in U.B.C. Table 24-H. same values as speci, fied in U.B.C. Chapter 26. Calculated existing foundation pressure due to max dead load plus live load may be increased 25% for dead load, and may be in- creased 50% for dead ~ load plus seismic load. specified Bolts and dowels to be 1/2 inch D. ALTERNATE MATERIALS. Alternate materials and methods of construction may be approved by the Department in accordance with the provisions of Section 106 of the Uniform Building Code. ("U.B.C.") E. MINIMUM ACCEPTABLE QUALITY OF EXISTING UNREINFORCED MASONRY WALLS. (1) GENERAL PROVISIONS. Ail unreinforced masonry walls utilized to carry vertical loads and seismic forces parallel and perpendicular to the wall plans shall be tested as specified in this Section. All masonry quality shall equal or exceed the minimum standards established herein or shall be removed and replaced by new materials. Alternate methods of testing approved by the Department may be used. Nothing shall prevent point with cement mortar of all the masonry wall joints before the tests are first made. If the exterior joints are pointed then the inside face must also be pointed. Prior to any pointing, the wall surface must be sand or water blasted to remove loose and deteriorating mortar. All preparation and cement mortar pointing shall be done under the continuous inspection of the Director with a subsequent written report to the Department. All testing shall be performed by an approved testing agency in accordance with the requirements specified in this Subsection. EXCEPTION: Unreinforced masonry walls which carry no design horizontal or vertical loads other than their own weight may be considered as veneer if they are adequately anchored to new supporting elements. (2) NUMBER AND LOCATION OF TESTS. The quality of mortar in all masonry walls shall be determined by performing in place shear tests or by testing eight inch diameter