Design of Lean to Roof Steel Trusses with Hollow Circular tube using IS 875 (part-III):2015 & IS 800:2007

Mahesh B. Prajapati, V. R. Panchal, Amit Suthar

Abstract


At present, SP-38:1987 is available which provides design for lean to roof type trusses and pitch roof trusses. The design of lean to roof truss has been carried out as per IS 800:1984 & IS 875 (Part-III):1964. Afterwards IS 800:1984 is revised in 2007, which is based on limit state method. Also, IS 875 (Part-III) is updated in 1987 and then in 2015 considering climate changes and economical parameters. Accordingly, study has been done to revise the design of trusses given in SP-38:1987. In the present study, design and comparison of lean to roof type truss with steel circular hollow tube section have been carried out using IS 875 (Part-III):2015 and IS 800:2007 limit state method using STAAD Pro. and their results compared with SP-38:1987 results. This study includes lean to roof truss system considering different parameters like span, spacing of truss, slope of roof and wind zones with all cases of wind load. At the end, a compiled report will be prepared, which will be helpful to design engineers to provide economic, easier, faster approach for designing of steel trusses.


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References


SP-38, “Handbook of typified designs for structures with steel roof trusses (with and without cranes), Bureau of Indian standards, New Delhi,1987.

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