Stresses in Beams with Circular Eccentric Web Holes

by Peter W. Chan, (A.M.ASCE), Struct. Designer; de Stein and Assoc., Consulting Engrs., Montreal, PQ, Canada,
Richard G. Redwood, Assoc. Prof. and Chmn.; Dept. of Civ. Engrg. and Appl. Mech., McGill Univ., Montreal, PQ, Canada,

Serial Information: Journal of the Structural Division, 1974, Vol. 100, Issue 1, Pg. 231-248

Document Type: Journal Paper


An approximate method of analysis for stresses in beams with circular web holes, both mid-depth and eccentric, is presented. Regions of a beam around a hole are analyzed as curved beam sections and the stresses are calculated accordingly. Methods of analysis using the theory of elasticity are also examined. Experiments are described and it is shown that the curved beam approximation is more accurate in predicting hole edge stresses for high ratios of hole diameter to beam depth and under high shear-to-moment ratio.

Subject Headings: Stress analysis | Curved beams | Web beams | Webs (structure) | Elastic analysis | Approximation methods | Shear stress

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