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Authors
Affiliations
1 Government College of Engineering, Amravati, 444604, Maharashtra, IN
Source
International Journal of Engineering Research, Vol 5, No SP 3 (2016), Pagination: 644-647
Abstract
In design of truss effect of wind forces is predominant to calculate the member forces. To achieve the economical mass production of trusses Indian government assigned some restrictions or parameters to production of industrial truss under the project of B-8. The paper presents comparative study between design of truss as per revised provisions of wind load calculations given in IS875:1987 with the design obtained as per calculations made in SP-38(S&T):1987; Handbook for typified designs for structures with steel roof trusses. The analysis is carried out on a 12 m span A-type truss and the forces are calculated with the help of ANSYS 11.0. IS875:1987(part 3) considers terrain, class of structure, topography factor, different permeability condition depending on slope of structure which are not considered in SP-38(S&T):1987; Hand book for typified designs for structures with steel roof trusses. The calculations show that there is a considerable variation of member forces as the span of truss increases. The percentage variation of member forces in 24 m span truss is nearly double that in 12 m span truss.
Keywords
ANSYS 11.0, SP 38 (S & T):1987, IS875:1987, Steel Roof Truss.
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