It's a pad for a cruise missile. 6000 PSI Heat resistant, post tensioned.6000 psi concrete for a shed? Is your dad related to kevin?
The bare minimum is usually between 2,000 and 3,000 psi for fill and simple surfaces (e.g., patios or sidewalks). ACI sets 2,500 psi as the structural concrete minimum. Pavement, slabs, and footings can be up to 4,000 psi. Suspended slabs, beams, and girders (typically found in bridges) might be 5,000 psi.Jun 14, 2022
High strength concrete is more work as well. Are you planning to vibrate?
4" is OK
How Thick Should a Concrete Sidewalk Be Poured?
The thickness of your concrete is an important element in the endurance of your sidewalk. Proper thickness can help avoid early concrete repair needs.
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