RC Bracket and Corbel Calculator | CSA A23.3 Strut-and-Tie
Design reinforced concrete brackets and corbels using the strut-and-tie method per CSA A23.3-14 Clause 4. The calculator models the internal load path with concrete compression struts and steel tension ties, then determines required reinforcement and checks node bearing stresses. Input corbel geometry, applied loads, and material properties for a complete design check.
Strut-and-tie models represent the internal force flow in disturbed regions of concrete members using compression struts (concrete), tension ties (reinforcement), and nodes where they meet.
When does a bracket become a corbel?
Both terms describe short cantilevers projecting from a column or wall. CSA A23.3 defines specific shear span-to-depth ratios that determine which design provisions apply.