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ORDINANCE NO. NS- 1598 <br />Page Ten <br /> <br />(3) <br /> <br />Shear bolts and shear dowels embedded <br />a minimum of 8 inches into unreinforced <br />masonry walls. Bolt centered in a 2 1/2 <br />inch diameter hole with dry-pack or non- <br />shrink grout around circumference of <br />bolt or dowel. (1) <br /> <br />Same as value given <br />for solid masonry in <br />U.B.C. Table 24-G. <br />Max. 750 lbs. <br /> <br />(4) <br /> <br />Tension bolts and tension dowels ex- <br />tending entirely through unreinforced <br />masonry walls secured with bearing plates <br />on far side of wall with at least 30 <br />square inches of area.(2) <br /> <br />1200 lbs. per bolt. <br /> <br />(5) <br /> <br />Reinforced masonry infilled openings in <br />existing unreinforced masonry walls with <br />dowels to match reinforcing. <br /> <br />Same value as for un- <br />reinforced masonry <br />walls. <br /> <br />(6) <br /> <br />Masonry piers and walls reinforced per <br />U.B.C. Section 2418 and designed for <br />tributary loads. <br /> <br />Same values as speci- <br />fied in U.B.C. Table <br />24-H. <br /> <br />(7) <br /> <br />Concrete footings, walls and piers <br />reinforced as specified in <br />Chapter 26 and designed for <br />tributary loads. <br /> <br />Same values as speci- <br />fied in U.B.C. <br />Chapter 26. <br /> <br />(8) <br /> <br />Foundation pressures for <br />structures exhibiting no <br />evidence of settlement. <br /> <br />Calculated existing <br />foundation pressure <br />due to max dead load <br />plus live load may be <br />increased 25% for dead <br />load, and may be in- <br />creased 50% for dead <br />load plus seismic load. <br /> <br />FOOTNOTES: <br /> <br /> (1) Bolts and dowels to be tested as specified in <br />Section 8-2006. <br /> <br /> (2) Bolts and dowels to be one-half (1/2) inch minimum <br />in diameter. <br /> <br /> (d) ALTERNATE MATERIALS. Alternate materials, designs <br />and methods of construction may be approved by the department <br />in accordance with the provisions of Section 106 of the <br />Uniform Building Code. <br /> <br />(e) MINIMUM ACCEPTABLE QUALITY OF EXISTING UNREINFORCED <br /> <br />MASONRY WALLS. <br /> <br /> (1) GENERAL PROVISIONS. Ail unreinforced masonry <br />walls utilized to carry vertical loads and seismic forces <br />parallel and perpendicular to the wall plans shall be tested <br />as specified in this section. All masonry quality shall <br />equal or exceed the minimum standards established herein or <br />shall be removed and replaced by new materials. Alternate <br />methods of testing approved by the department may be used. <br />Nothing shall prevent point with cement mortar of all the <br />masonry wall joints before the tests are first made. If the <br />exterior joints are pointed then the inside face must also <br />be pointed. Prior to any pointing, the wall surface must be <br />sand or water blasted to remove loose and deteriorating <br />mortar. All preparation and cement mortar pointing shall be <br />done under the continuous inspection of the director with a <br />subsequent written report to the department. All testing <br />shall be performed by an approved testing agency in accordance <br />with the requirements specified in this subsection. <br /> <br /> <br />