. Details of riveted railroad truss bridges . The latter detail is hetter on account of the additionalstrength gained hy not cutting the flange. The out side measur-ments can remain the same. The one objection to turning theangles in ^ is the difficulty found in riveting the lattice hars. ^ere greater area is required than can he readilysecured hy means of two channels alone, a detail shown in employed. Here an addition to the area is secured h:-^ rivetingtwo plates as shown. These plates can be riveted on the insideor outside but the inside is preferable. Wher
. Details of riveted railroad truss bridges . The latter detail is hetter on account of the additionalstrength gained hy not cutting the flange. The out side measur-ments can remain the same. The one objection to turning theangles in ^ is the difficulty found in riveting the lattice hars. ^ere greater area is required than can he readilysecured hy means of two channels alone, a detail shown in employed. Here an addition to the area is secured h:-^ rivetingtwo plates as shown. These plates can be riveted on the insideor outside but the inside is preferable. Where a still largersection is required the post may be built up as shown in thefigures below. These figures all show built-up sections usedin large bridges. is built up of four angles and latticebars. As the lattice bars take no stress the only thing to begained is an increase in the radius of gyration. and 53 -31- are the same details as and 49 except that these arebuilt up. TTeither would Toe used except in large An unusual detail for intermediate post is shown in
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Keywords: ., bookcentury1900, bookdecade1900, bookiddetails, booksubjecttheses
