I have designed a pile supported slab using T-beams, the load and distance is such that the beams require a significant amount of reinforcement:
Area of reinforcement in the web = ~2700mm²
Area of reinforcement in the flange = ~5400mm²
Which leaves a total area of reinforcement of ~8100mm²...
I recently had a contractor ask to use patio blocks to hold the rebar up (3") above the bearing soil, in this circumstance I said no to it and he got pretty irritated with me. Wondering if anyone else has used patio blocks as chairs? In further thinking about it I do not see it being a big...