Strength of materials, analysis of stresses, proportioning the material, details of construction, details, bills, and estimatesInternational Textbook Company, 1899 |
Συχνά εμφανιζόμενοι όροι και φράσεις
amount angles assumed batten plate beam bearing bolt center of gravity center to center channels chords and end compression members compressive stress connecting cover-plate dead load stresses diagonal diameter dimensions distance elastic limit end post equal eye-bars factor of safety feet flange floor-beam force formula given hanger Highway Bridge horizontal joists lateral rod lateral system lattice bars lineal foot live load stresses load line load unit stress lower chord material maximum bending maximum stress Mechanical Drawing Plate medium steel metal obtained panel length panel load pin hole pin plates polygon for joint portal portion pounds per square Pratt truss R₁ radius of gyration resist rivet holes roadway screw ends sectional area required shear shearing stress shoe shown in Fig span square inch stress diagram stress sheet tensile stress tension members thickness upper chord weight per foot width wind stress wrought iron
Δημοφιλή αποσπάσματα
Σελίδα 946 - 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.
Σελίδα 649 - The bending moment at any point of a beam is the algebraic sum of the moments of all of the forces (the reaction included) acting upon the beam, on either side of that point, the point being considered as the center of moments. The expression "algebraic sum...
Σελίδα 859 - Plate girders shall be proportioned upon the supposition that the bending or chord strains are resisted entirely by the upper and lower flanges, and that the shearing or web strains are resisted entirely by the web plate; no part of the web plate shall be estimated as flange area. The distance between centers of gravity of the flange areas will be considered as the effective depth of all girders.
Σελίδα 898 - The pitch of rivets at the ends of built compression members shall not exceed four diameters of the rivets for a length equal to 1^ times the maximum width of the member. (d) Two-Angle Members. In tension members composed of two angles, a pitch of 3'-6...
Σελίδα 816 - The attachment of the lateral system to the chords shall be thoroughly efficient. If connected to suspended floor beams the latter shall be stayed against all motion.
Σελίδα 1014 - ... running between planed surfaces. The rollers shall not be less than 2 inches diameter, and shall be so proportioned that the pressure per lineal inch of rollers shall...
Σελίδα 674 - Table 30, and / = least moment of inertia of the cross-section — that is, the moment of inertia about an axis passing through the center of gravity of the cross-section and parallel to the longest side. In other words, if the...
Σελίδα 897 - Preference will be had for such details as shall be most accessible for inspection, cleaning and painting; no closed sections will be allowed.
Σελίδα 889 - M = — , (12) c in which / represents the moment of inertia of the beams crosssection, and c the distance from the center of gravity of the section to the outermost fiber.
Σελίδα 663 - ... strains are directly proportional to the horizontal stresses in each fiber, they are also directly proportional to their distances from the neutral surface, provided the elastic limit is not exceeded.