. Details of riveted railroad truss bridges . o o o o o o o o o o o oo o o o o o o o o o o o o o o o \o o o o o o o o o o 0 o o o o o o o o o J L In most types of bridges where very long stringersare used, a system of bracing is used independent of the bottom lateral system of the truss. The most common system is theplain Warren szstem shown in Pig. 10. This same system withverticals is also used in some case^^see Ploor Beams. The floor beams of a bridge are placed perpendicularto the stringers and join the two trusses of the bridge at their
. Details of riveted railroad truss bridges . o o o o o o o o o o o oo o o o o o o o o o o o o o o o \o o o o o o o o o o 0 o o o o o o o o o J L In most types of bridges where very long stringersare used, a system of bracing is used independent of the bottom lateral system of the truss. The most common system is theplain Warren szstem shown in Pig. 10. This same system withverticals is also used in some case^^see Ploor Beams. The floor beams of a bridge are placed perpendicularto the stringers and join the two trusses of the bridge at theirpanel points. On account of the weight which is brought on thismember, only built up sections can be used; and on a,ccount of thesize of these sections, some difficulty is found in fasteningthe floor beam to the bridge truss. The floor beams are used throughout the length of thelength of the bridge and may be divided into two general typeson account of their position, namely: end-floor beams and inter-mediate floor-beams. -9 Much difficulty is found in fastening the end floor-beam, because of the inclination of the end post. showsa simple method of fastening the end floor-heam. This particulardetail is taken from a bridge designed by the Phoenix BridgeCompany. Here the weight on the end floor-heam comes directlyupon the pin and bearing. lo o o o o o o o o o o o o 0 o o o o o o o
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