Comparative Study of Conventional Steel Truss Profiles

Trusses are commonly used in supporting roof structures, industrial building, auditorium, and warehouses. Trusses may be used efficiently in long distance span with minimum amount of material used. This is due to the internal loads of the members incurring only axial forces (in the direction of the member), i.e. either compression or tension. Sometimes, it creates difficulty to decide which truss configuration, span and rise would produce the most economical truss shape with minimum weight/mass. Thus, in this paper, thirty different conventional trusses of varying spans (10 m, 15 m, 20 m, and 25 m) and rise (1.5 m, 2.0 m, and 3.0 m) combinations have been analysed and designed with circular hollow section using STAAD. Pro V8i SS5. All the trusses have been designed as per IS 800:2007 (LSM). Moreover, all trusses are also studied for their practical weight as well as for optimum weight and compared to find out the economical truss profile.