Abstract
In this study an evaluation of empirical formula is carried out for effective flange width with and without web openings based on previous experimental results. The results of empirical equation were compared with the codes of practice formulas such as ACI 318M-14, BS8110, AS 3600 and CSA. Also, three researchers’ equations without the effect of web opening are used to compare with the results of the present study. Square and circular web openings with different size and locations are studied. The effect of compressive strength (), flange reinforcement (ρf ), flexural reinforcement (ρw ), shear reinforcement (ρv ), thickness of flange (hf ) and clear span (ln ) are investigated and included in the suggested formula. Finally, the previous researcher’s equations are modified to include the effect of web openings on effective flange width.
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