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algebraic American Bridge Company angles arch asphalt axis beam bending bolts calculated cent channels clerestory coat columns compression compression members concrete construction corrugated steel cost covered crane dead load deformation designed Engineering equal equilibrium polygon fastened Fink truss floor force polygon formula frame girders girts given glass glazing graphic gravel gutters hinged horizontal inertia iron joint knee brace laced laid layer left reaction length linseed oil louvres lower chord maximum stress method mill buildings nails paint panel pitch plank plate portal Portland cement pounds per square purlins radius of gyration red lead ribs rivets roof trusses roofing felt shear sheathing sheets shown in Fig side lap simple truss skylights slate snow load spaced span spiking strips square feet square foot square inch stress diagram stress due structure surface tension tile transverse ventilators vertical walls Warren truss weight
Page 358 - 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 354 - All pin-holes shall be re-enforced by additional material when necessary, so as not to exceed the allowed pressure on the pins. These re-enforcing plates must contain enough rivets to transfer the proportion of pressure which comes upon them, and at least one plate on each side shall extend not less than 6 inches beyond the edge of the tie plate.
Page 354 - In compression members joints with abutting faces planed shall be placed as near the panel points as possible, and must be spliced on all sides with at least two rows of rivets on each side of the joint. Joints with abutting faces not planed must be fully spliced.
Page 359 - ... required in specimen tests of the grade of steel from which they are rolled. The bars will be required to break in the body, but should a bar break in the head, but develop 10 per cent, elongation and the ultimate strength specified it shall not be cause for rejection, provided not more than one-third of the total number of bars tested break in the head ; otherwise the entire lot will be rejected.
Page 360 - All iron work before leaving the shop shall be thoroughly cleaned from all loose scale and rust, and be given one good coating of pure boiled linseed oil, well worked into all joints and open spaces.
Page 359 - Pins made of either of the above-mentioned grades of steel shall, on specimen test pieces cut from finished material, fill the requirements of the grade of steel from which they are rolled, excepting the elongation, which shall be decreased 5 per cent. from that specified.
Page 356 - The rivet heads must be of approved hemispherical shape, and of a uniform size for the same size rivets throughout the work. They must be full and neatly finished throughout the work and concentric with the rivet hole.
Page 352 - At the ends of compression members the pitch shall not exceed four diameters of the rivet, for a length equal to twice the width of the member.