# Graphic Statics ; Stresses in Bridge Trusses ; Bridge Members and Details ; Bridge Tables

International Textbook Company, 1903 - Bridges
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Page 35 - Since the resultant moment of several forces about any point is equal to the moment of the resultant of the forces about...
Page 14 - The force polygon must close; for, otherwise, the vector drawn from the origin of the first vector to the end of the...
Page 18 - Rt and the resultant of the wind loads, the three external forces must meet in a point if produced. This furnishes a method for determining the reactions, where the direction and line of action of one and a point in the line of action of the other are known, providing the point of intersection of the three forces comes within the limits of the drawing board.
Page 17 - V is equal to the algebraic sum of the vertical components of the stresses in ab and Ab.
Page 18 - These floors have not been in use for a sufficient length of time to establish their suitability for this purpose.
Page 2 - A' through the truss and consider the forces acting on the part of the truss to the left of the section.
Page 15 - The maximum moment in a beam supporting two equal loads will occur under either load when the two loads are on opposite sides of the center and one of the loads is at a distance from the center equal to one-fourth the distance between the loads. 3.
Page 84 - ... the sum of the horizontal components of the stresses in the web members intersecting at that point. The results for g or h or k may be easily verified by the method of moments. Let / be the span in feet, and d the depth of a flanged beam, in feet also ; then if w is the load per foot, the flange stress at the centre, as is well known, will...
Page 32 - ... make an angle of about 45° with the axis of the member...
Page 16 - X 6", or i" bolt 6" long, would mean a bolt having a shank \" in diameter and 6" long from the under side of the head to the end of the stem, having the dimensions of the bolt shown in Fig. 62. The dimenFig.