HANDBOOK OF TYPIFIEDD ESIGNSF OR STRUCNRES WITH STEEL ROOF TRUSSES

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HANDBOOK OF TYPIFIEDD ESIGNSF OR STRUCNRES WITH STEEL ROOF TRUSSES

Steel trusses, supported on columns, are one of the structural systems
commonly used in industrial buildings. The lateral load resistance (due to wind, earthquake, etc) of  such systems may be derived either from the cantilever action of the supporting columns fixed  at base or by the combination of horizontal wind girders at the truss tie level and vertically braced  end bays. The steel trusses have been designed as simply supported on columns and subjected to 
loads (dead, live, crane, wind and earthquake loads) applied through the purlins, girts and 
gantry girders. The columns have been designed as
 cantilevers tied together resisting wind load and 
other loads acting perpendicular to the ridge, in addition to axial load.
The steel trusses have been analyzed as simply supported on columns. The
rafter and tie members of the trusses have been adequately braced raterally thus preventing outof- plane buckling. 7 he trusses have been analyzed
assuming the connections between the members to be rigid and capable of transferring moment and shear in addition to axial force. The support at
one end is assumed to be hinged and the other end on rollers for the purpose of analysis. This is

achieved in the actual structure by the flexibility of columns.
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