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2,0 APPLICABLE CODES AND STANDARDS <br />2.1 Governing Specifications <br />Bridge(s) shall be designed in compliance with the LRFD Bridge Specifications, latest edition, by <br />AASHTO. Calculations shall be in accordance with this document, and formulas shall reference the <br />appropriate sections. <br />2.2 Other Reference Codes, Specifications and Standards <br />AISC, Steel Construction Manual, Latest Edition <br />American Welding Society, Bridge Welding Code, D1.5, Latest Edition <br />ASCE/SEI 7 Minimum Design Loads for Buildings and Other Structures, Latest Edition <br />National Design Specification for Wood Construction, ANSI NDS -Latest Edition <br />3.0 BRIDGE GEOMETRY <br />3.1 Span Length <br />The bridge span length shall be 40'-00" (straight line dimension) and measured from end to end of the <br />bridge structure. <br />3.2 Width <br />The bridge width shall be 16-00" and shall be as measured from the inside face to inside face of rail. <br />3.3 Lower Steel Clearance <br />The bridge manufacturer shall determine the distance from the top of the deck (measured from the highest <br />point of the deck) to the bottom of any steel member. <br />3.4 Rail Height <br />Top of rail shall be a minimum 2'-7" above the top of the wearing surface for vehicular traffic only. <br />3.5 Camber <br />A single simple -span bridge shall have a vertical camber dimension at the mid -span equal to 100% of the <br />anticipated full dead load deflection. If beam mill camber is adequate to accommodate full dead load <br />deflection, then indicate so on drawings. <br />3.6 Elevation Difference <br />The top of the decks at each end of the bridge shall be constructed with a vertical elevation difference to <br />produce an equivalent to a 4.01% grade slope. <br />3.7 Expansion Joint <br />Steel galvanized angle shall be attached to top flange of girders to cover open joint between girders and <br />concrete backwall (backwall provided by others). <br />