Flat slab punching shear design ensures slab resistance to concentrated loads, with punching shear reinforcement calculated to prevent failure, and punching shear stress being the stress around columns that can lead to shear failure if unreinforced. https://civildigital.com/punching-shear-design-punching-shear-forces/https://civildigital.com/punching-shear-design-punching-shear-forces/