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abutment allowed ballast base beams bearings bed plates bolts bottom flanges bracing bridge carry cast cent clear concrete connected continuous correspond cover plates curve dead load deck spans deep depth designed diagonal diameter distance edges engage engineer extend field-riveted fillers fixed flange angles floor floorbeams force four frames gusset holes horizontal I-beams inches intermediate joints lateral length less lines live load longitudinal lower flanges masonry material maximum opposite pairs panel pedestals pieces placed planed plate girders points proportioned rail Railroad Railway reamed reinforced rivets rollers rows seated secured shear shoes short side single sole plates solid spaced spans Specification spliced square standard steel stiffeners strain stress stringers structures surface TABLE thickness top and bottom top flanges track transverse troughs uniform unit upper vertical web-stiffener angles webs weight wide width
Page 61 - The tensile strength, limit of elasticity, and ductility shall be determined from a standard test piece cut from the finished material.
Page 62 - Material which is to be used without annealing or further treatment shall be tested in the condition in which it comes from the rolls.
Page 51 - Chemical determinations of the percentages of carbon, phosphorus, sulphur and manganese shall be made by the manufacturer from a test ingot taken at the time of the pouring of each melt of steel, and a correct copy of such analysis shall be furnished to the engineer or his inspector. Check analyses shall be made from finished material, if called for by the purchaser, in which case an excess of 25 per cent. above the required limits will be allowed.
Page 52 - ... flanges of girders. Where tight fits are called for, the ends of the Stiffeners shall be faced and shall be brought to a true contact bearing with the flange angles.
Page 206 - In calculating shearing strains and bearing strains on web rivets of plate girders, the whole of the shear acting on the side of the panel next the abutment is to be considered as being transferred into the flange angles in a distance equal to the depth of the girder.
Page 50 - The stiffeners at ends and at points of concentrated loads shall be proportioned by the formula of paragraph 16, the effective length being assumed as one-half the depth of girders. End stiffeners and those under concentrated loads shall be on fillers and have their outstanding legs as wide as the flange angles will allow and shall fit tightly against them. Intermediate stiffencrs may be offset or on fillers, and their outstanding legs shall be not less than one-thirtieth of the depth of girder plus...
Page 72 - Sample pieces, one inch square, cast from the same heat of metal in sand moulds, shall be capable of sustaining on a clear span of 4 feet 8 inches a central load of 500 pounds when tested in the rough bar.
Page 22 - Wind Pressure. — The wind pressure shall be assumed acting in either direction horizontally: First. At 30 pounds per square foot on the exposed surface of all trusses and the floor as seen in elevation, in addition to a train of 10 feet average height, beginning...
Page 47 - Structures located on curves shall be designed for the centrifugal force of the live load applied at the top of the high rail. The centrifugal force shall be considered as live load and be derived from the speed in miles per hour given by the expression 60 — 2}4D, where "D