Structural EngineeringMyron C. Clark publishing Company, 1914 - 669 σελίδες |
Άλλες εκδόσεις - Προβολή όλων
Structural Engineering (Classic Reprint) John Edward Kirkham Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
Συχνά εμφανιζόμενοι όροι και φράσεις
area of cross-section assumed average unit load axis bottom chord bridges center of gravity column compressive stress considered cover plate dead load dead-load stress deflection designing determined diagonal cD distance drawing end post equal equation equilibrium polygon flange angles floor beam forces P1 formula hence holes I-beam impact inch lbs influence line joint left of section length line of action main girders maximum bending maximum live-load stress maximum shear maximum stress moment of inertia multiplying neutral axis number of rivets obtain ordinate panel load panel points parallel plate girder plate girder bridges purlins radius of gyration reaction readily seen represent shearing stress shop drawings shown in Fig span splice square inch steel stiffeners stress in diagonal stress in top stress sheet stringers structure strut taking moments tensile stress tension thickness uniform live load uniform load vertical component weight wind load
Δημοφιλή αποσπάσματα
Σελίδα 539 - Rivets shall look neat and finished, with heads of approved shape, full and of equal size. They shall be central on shank and grip the assembled pieces firmly. Recupping and calking will not be allowed. Loose, burned or otherwise defective rivets shall be cut out and replaced. In cutting out rivets great care shall be taken not to injure the adjacent metal. If necessary they shall be drilled out.
Σελίδα 537 - In main members the end tie-plates shall have a length not less than the distance between the lines of rivets connecting them to the flanges, and intermediate ones not less...
Σελίδα 537 - The pitch of rivets at the ends of built compression members shall not exceed four diameters of the rivet for a distance equal to one and one-half times the maximum width of the member.
Σελίδα 236 - The flanges of plate girders shall be connected to the web with a sufficient number of rivets to transfer the total shear at any point in a distance equal to the effective depth of the girder at that point combined with any load that is applied directly on the flange. The wheel loads where the ties rest on the flanges shall be assumed to be distributed over three ties.
Σελίδα 537 - The inclination of lattice bars with the axis of the member shall be not less than 45 degrees, and when the distance between rivet lines in the flanges is more than 15 in., if single rivet bar is used, the lattice shall be double and riveted at the intersection.
Σελίδα 539 - Eye-bars shall be straight and true to size, and shall be free from twists, folds in the neck or head, or any other defect. Heads shall be made by upsetting, rolling, or forging. Welding will not be allowed. The form of...
Σελίδα 50 - Steiner. is true for bath a plane laminar body and a thin three-dimensional body, and states that the moment of inertia of a body about any axis is equal to its moment of inertia about a parallel axis through its...
Σελίδα 303 - Ibs. per linear ft. of structure applied 7 ft. above the rail for assumed wind force on train, when the structure is either fully loaded or loaded on either track with empty cars assumed to weigh 1,200 Ibs.
Σελίδα 536 - Plate girders shall be proportioned either by the moment of. inertia of their net section; or by assuming that the flanges are concentrated at their centers of gravity; in which case one-eighth of the gross section of the web, if properly spliced, may be used as flange section.
Σελίδα 539 - Pin holes shall be in the center line of bars and in the center of heads. Bars of the same length shall be bored so accurately that, when placed together, pins...