Structural Engineering Volume 1

Structural Engineering Volume 1

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 edition. Excerpt: ... is governed so largely by practical considerations, that this method is to be recommended on account of its convenience. It gives safe results that agree closely with those obtained by the more cumbersome methods. ' 29. Graphic Method 01' Determining Number of Rivets in Vertical Leg or Flange Angles.--Besides the several analytical methods of determining the number of rivets through the vertical legs of the flange angles in the several panels of the plate girder, a convenient graphic method that gives approximate results sufficiently accurate for all practical purposes is illustrated in Fig. 23. In this method, a diagrammatic drawing of one-half of the plate girder with the stiffeners properly placed, is made to scale, as shown at a bra'. The number of rivets required through the vertical leg of the top flange of the plate girder, from the center line of the girder to the abutment, is next calculated by the method described in Art. 27, which consists in first calculating the bending moment, in foot-pounds, due to the uniformly distributed load and dividing by the depth of the girder, in feet, the result being the horizontal flange stress. This stress divided by the allowable resistance of _one rivet will give the number of rivets between the center of the plate girder and the abutment, or between a and b in the sketch. Having determined the number of rivets required between these points, lay off any vertical distance, as be, and through the points a and e describe a parabola by the method explained in Art. 15. Having drawn in the parabola as shown in the figure, extend upwards the center lines of the angle stiffeners on the plate girder until they intersect the parabola, as at 1', g, lz, i, and j. Through the points more

Product details

  • Paperback | 184 pages
  • 189 x 246 x 10mm | 340g
  • United States
  • English
  • black & white illustrations
  • 1236921356
  • 9781236921352