Comparative study on Optimization of Pratt, Howe and Warren Steel Truss
Shraddha Nilesh Rahane, Supriya Kiran Nalawade, Dr. Navanath Vishwanath Khadake
Truss design, Structural Efficiency, Models, Analyses, Truss Arrangement, Steel take-off, lesser weight, Truss optimization.
The purpose of this project is to design, analyse industrial roof truss and to determine the impacts of trusses geometry in the design of plane truss for increasing structural efficiency with different configurations by using channel, angle and beam shape section. This study is need as sometimes there is difficulty or time consuming to choose the most successful or optimum shape of designed roof truss. Two trusses (Pratt truss, Warren and Howe trusses) which can be compared closely are chosen. The form and configuration of the truss rely upon the span of trusses and total other different factors. The height of truss is kept 10m from the ground and designed span of 10m, 12m and 14 m with rise of 2m, 2.5m and 3m and analysis is done. It shows comparison of trusses between post optimisation values of steel take-off and span keeping height constant. We considered self-weight, dead load and wind load and other load combinations details on STAAD Pro V8i software. The overall designed load was distributed to the joints thus no moment was opposed by the members. The STAAD Pro method is employed for the calculation of the steel take-off in unit KN wherever the truss with least value of steel take-off is taken into account as most economical as it gives a light weight structure with cutting the material cost of construction also member are optimised to desired sections thereby making the structure most efficient & economical in use. Pratt, Howe & warren trusses were compared for every span with same rise. For same span, Pratt truss geometry looks to be the fore most suitable configuration with more savings of weight when put next to other trusses.
Article Details
Unique Paper ID: 155085

Publication Volume & Issue: Volume 8, Issue 12

Page(s): 1304 - 1315
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