Punching Shear in Spread Footings to CSA A23.3
Size a spread footing for punching shear to CSA A23.3-24: the size effect factor, the 2d footing exemption, the depth quadratic and a one-way check.
Read Article →Size a spread footing for punching shear to CSA A23.3-24: the size effect factor, the 2d footing exemption, the depth quadratic and a one-way check.
Read Article →CSA A23.3-24 renamed the K-factors and added a grade factor, so a 25M top bar in 500W steel needs 1501 mm, 39 % more than in 400W. See which factors move.
Design a reinforced masonry beam for flexure to CSA S304-24: grouted f'm, the balanced limit as rho_b and K_b, course depths and an 85 kNm lintel worked out.
CSA A23.3-24 rewrote the hooked bar equation: a 25M hook at 30 MPa grows from 460 to 721 mm. See how the cover and tie factors win the length back.
Size a masonry lintel with arching: the 45 degree triangle, the 203 mm rule, and why the CSA S304 point load spread moves the moment more than arching does.
Calculate bolt shear, bearing, tear-out and tension resistance to CSA S16-19 Cl. 13.12, with a per-bolt table and a worked four-bolt lap splice.
Size shear friction dowels to CSA A23.3-24 Cl. 11.5: pick c and mu for your joint, solve for the steel, and see what roughening saves at a slab-to-wall joint.