DESIGN OF CASTELLATED BEAMS AND COMPARISION WITH SOLID WEB SECTIONS

Abstract

A study on the cost effective design of structure with the help of “Open Web Beams/Castellated beams” Both Plastic and Elastic method of analysis are utilized to predict the failure, deflection and behaviour of beams. Interaction diagrams predicting formation of plastic mechanism yielding of the elastic buckling analysis using the finite element method are co-related with a number of experimental test results done with the help of Ansys software. Castellation is the better option for Multi-storey structures and structure having electrical/Mechanical requirements like Duct work, cooling Pipe work etc. These additional requirements needs to be hanging from top member and it books 300 to 500 mm height of floor (increase 300 mm height per floor) .But in Open Web beams these spaces compensated by beam itself and we save 300 to 500mm spaces per floor. It means if we opt G+10 floor structure it will becomes G+11 ( 300 mm X 10 floors = Floor of 3 m height at 11th floor) in same budget.