The Structural Engineer > Archive > Volume 70 (1992) > Issues > Issue 1 > Tests on Composite Beams with Large Web Openings to Justify Existing Design Methods
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Tests on Composite Beams with Large Web Openings to Justify Existing Design Methods

The paper summarises the results of three load tests on composite beams of 1Om span, comprising one control composite beam (i.e. without opening) and five rectangular openings of various sizes and locations. The tests were carried out under simulated uniform load and were taken to failure of the beam at each opening. The results of the tests have been compared with existing guidance in the SCI/CIRIA publication Design for openings in the webs of composite beams. The overall model factor, representing the margin between the tests and the design method (eliminating partial safety factors and using measured properties) was in the range of 1.04 to 1.47. Reasons for this apparent conservatism are given. The control composite beam was also tested to failure without the presence of openings, and the results were compared with the method of BS59.50: Part 3. This gave a model factor of 1.04. R.M. Lawson, K.F. Chung and A.M. Price

Author(s): Lawson, R M;Chung, K F;Price, A M

Keywords: load tests;composite;beams;holes;webs;design;codes of practice;comparing;axial loads