Steel in Construction: Convenient Rules, Formulæ and Tables for the Strength of Steel Shapes Used as Beams, Struts, Shafts, Etc., Made by the Pencoyd Iron Works, A. & P. Roberts Company, Philadelphia ... |
Other editions - View all
Steel in Construction: Convenient Rules, Formulae and Tables for the ... Pencoyd Iron Works No preview available - 2015 |
Common terms and phrases
allow one-half angles Area in square Axis Axis Axis bars Beams for Distributed centre load Centres of Beams channels Coefficient of Strength Deflection for centre deflection is excessive Diam Diameter Distance in Feet Distributed Load elastic limit factors of safety Feet Between Centres figures in small Flange width Flat formulæ girder given in pounds Greatest Distance Greatest safe load Hinged inch of section iron least radius Length of Span lineal foot load in middle load in net load in pounds middle of beam modulus of elasticity moments of inertia PENCOYD pins Pounds 125 Pounds Pounds 150 Pounds pounds per foot pounds per square radii radius of gyration rivets Safe Load Deflection Section Number shafts shearing small type deflection Span in Feet Spruce or Pine Square Cube Root square foot Square per Square struts tables tabular deflection tabular load tensile strength tons uniformly distributed weights given width Web thickness Yellow Pine
Popular passages
Page 275 - The tensile strength, limit of elasticity, and ductility shall be determined from a standard test piece cut from the finished material. The standard shape of the...
Page 270 - All parts of the structure shall be so proportioned that the sum of the maximum loads, together with the impact, shall not cause the tensile strain to exceed — On soft steel, 15,000 pounds per square inch.
Page 275 - Pin-holes shall be bored truly parallel with one another and at right angles to the axis of the member unless otherwise shown in drawings ; and in pieces not adjustable for length, no variation of more than ^j of an inch will be allowed in the length between centres of pin-poles.
Page 277 - 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 275 - Eye-bars which are to be placed side by side in the structure shall be bored so accurately that, upon being placed together, the pins will pass through the holes at both ends at the same time without driving.
Page 271 - The web shall have stiffeners riveted on both sides, with a close bearing against upper and lower flange angles at the ends and inner edges of bearing plates, and at all points of local and concentrated loads, and also, when the thickness of the web is less than...
Page 275 - Material must be free from injurious seams, flaws, or cracks, and have a workmanlike finish.
Page 276 - ... to 70,000 pounds per square inch, an elastic limit of not less than one-half of its ultimate strength, and a percentage of elongation in eight inches equal to 22 per centum.
Page 273 - Works specifications for railroad bridges gives the following in regard to tie plates: "All segments of compression members, connected by latticing only, shall have tie plates placed as near the ends as practicable. They shall have a length of not less than the greatest depth or width of the member, and a thickness not less than one-fiftieth of the distance between the rivets connecting them to the compression members ". Chas.
Page 270 - In case the maximum strains in chords of bridges, or posts of trestle towers, due to wind and centrifugal force, added to the maximum strains due to vertical loading, (including impact), shall exceed the following limits : On soft steel, 19,000 pounds per square inch. On medium steel, 21,000 pounds per square inch, properly reduced for compression, addition must be made to such members until these limits are not exceeded.