34+ Concrete Slab Thickness For Carport Background. A concrete slab makes a good foundation for a storage shed. Knowing the thickness of a concrete slab can be important for several reasons.
Laying a concrete slab could be the most challenging part of building a garden shed. There are many rule of thumb estimates of slab and beam thicknesses and sizes. Slab thickness tolerances has long been a point of contention between contractors and specifiers.
Most residential concrete slabs are about 4 thick.
Most residential concrete slabs are about 4 thick. For an office space, you require a 2 hour fire rating, which means you require a 4.5 nw concrete or 3.25 lw concrete over a 2 deck. I just build a 26x11 carport, poured a 12'x12'x12' footer with rebar, used wire in. One of the most common reasons is for moisture testing.