Very odd punching shear situation (see attached), with 2 questions below. We do understand what the conservative/ safe routes are, but the question of “can you refine?” is being asked of us.
Looking to assess in a logical manner, I was hopeful to employ mechanical models of punching shear...
I'm evaluating an existing condition, with a very lightly reinforced 2-way slab system.
We were trying to eek out capacity by considering compression steel at a support, but noticed that the neutral axis was very small. The "compression" steel was actually in tension at the ultimate limit...