Paper Details

-Use of high strength steel (300-350MPa) framed trusssystems is increasing in the current scenario instead ofconventional mild steel (250 MPa) truss systems as it is structurally more efficient and has less depth requirement. Also dueto development of good and efficient connection technologies,large industrialroofing systems are now using closed formtubular sections instead of traditional angles, channels and I-sections. The roof slope of the framed truss is kept in the rangeof 5o-7oas against 10o-15ofor conventional trusses thereby reducing the exposed area for wind loads. As a result of abovefactors, framed trusses proves economical as compared to conventional trusses. But on the other hand use of lighter sections,results in increased deflection which needs attention. Lack of sufficient guidelines in Indian design codes, needs investigationin design parameters of framed trusses. So to optimize the design of framed trusses, influence of design parameters such astruss depth at eave and at ridge level, roof angle and number of panels have been studied to assess their impact/influence onthe ridge deflection and self-weight of truss. It is observed that increasing the truss depth at eave proves economical incontrolling ridge deflection rather than increasing the sizes of member. The results are presented in graphical form.

Kamlesh Parihar, “Parametric Study of Framed Truss Systems forLarge Span Industrial Structures”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 11, pp. 488-494, November 2017.