Transcription of Chapter 2 Design for Shear - Engineering
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Chapter 2 Design for Shear - Engineering
Chapter 2 Design for Shear By Richard W. Furlong Introduction Shear is the term assigned to forces that act perpendicular to the longitudinal axis of structural elements. Shear forces on beams are largest at the supports, and the Shear force at any distance x from a support decreases by the amount of load between the support and the distance x. Under uniform loading, the slope of the Shear diagram equals the magnitude of the unit uniform load. Shear forces exist only with bending forces. concrete beams are expected to crack in flexure, with such cracks forming perpendicular to longitudinal tension reinforcement, , perpendicular also to a free edge.
The nominal strength of a rectangular section is the sum of concrete strength Vc and reinforcement strength V s to give V n = K fc K vc + K vs ( A v /s ). SHEAR 3 is a design aid for use if Grade 60 stirrups larger than #5 are to be used, and sections must be
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