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Specifications for Railroad Drawspans
General Specifications Governing the Designing of Steel
Specifications for Highway Drawspans
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adjustable allowable angles applied assumed bars bearing bending bolts bottom chords bracing bridges carried cast cent centre channels CLASS close columns combination concentrated connected considered Contractor dead depth designing DETAILS determined diagonals diameter direct distance draw draw-spans drum effect employed ends Engineer entire equal equivalent exceed excepting eye-bars feet fixed flanges floor foot four girders given greatest half highway hips hold horizontal hundred impact inch inclined inner lacing lateral system least length less limit live load longitudinal lower material metal Method outer panel permit pins placed planed plate-girder plates points portion posts pounds practicable properly proportioning rigid rivets rods rolled rollers single spaced span Specifications Specifications for Railroad splices square steel stiffeners strength stresses stringers structure struts TABLE taken tension tests thickness top chords tower track transverse trusses turned uniform upper vertical weight wind load