. Details of riveted railroad truss bridges . ■P- p_ p__oo o o o o o oo o o o o o o o o o o o o o o o o , The sketch shows the position of the^etail and its relation to the post. The floor-heam consists of a simple built-up section without any end angles. This floor-beam is riveted into place and field riveted to the truss. One of the angles shown is to be field riveted. This makes it necessary to place a row of field rivets in the vertical and horizontal legs the of the angles. In order to accomplish like arrangement -10- is left open until the floor-l)eam is in place
. Details of riveted railroad truss bridges . ■P- p_ p__oo o o o o o oo o o o o o o o o o o o o o o o o , The sketch shows the position of the^etail and its relation to the post. The floor-heam consists of a simple built-up section without any end angles. This floor-beam is riveted into place and field riveted to the truss. One of the angles shown is to be field riveted. This makes it necessary to place a row of field rivets in the vertical and horizontal legs the of the angles. In order to accomplish like arrangement -10- is left open until the floor-l)eam is in place and then a metalplate is holted to the box. The main objection to the detail isthe field riveting that is The standard detail of the end floor-beam used on theNew York Central and Hudson River Railroad is shown in account of the projecting angles of the lower chord, it isnecessary to make a notch in the floor-beam in order to extendthe web below the chord. As considerable weight and shock comeson the end floor-beam, it is necessary to extend a gusset plateabove the intersection of the bottom chord and end post to makea solid connectoin. ITo serious objection can be seen to thisconnection. The American Bridge Company use a simple means offastening the floor-beam. This consists of letting the lowerflange of the floor-beam rest on the bearings and plate is then riveted to the floor-beam and bent so as to -11- fasten on the cover plate of the end post in order to stiffenthe floor-lDeam and keep it from rotating about its lower detail is shown in Fig,14.
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Keywords: ., bookcentury1900, bookdecade1900, bookiddetails, booksubjecttheses
