1 A retired Regular officer who also is employed by the federal government and is subject to the dual compensation statutes may have that reduction reduced because of the waiver of retired pay to receive VA benefits.
If they don't, then 4 thick is usually standard for a patio slab, how large or small it is doesn't really matter. The most important part is the sub-base. Make sure you have a good gravel base. I would recommend at least 12 inches of compacted gravel. I like gravel where the aggregate (rocks) are no larger than 1.
Detailed Instructions for Building a Concrete Patio. 1  Building concrete patios requires some planning. Buy materials and tools ahead of time, and rent an automatic cement mixer. 2  Excavate with a garden shovel. In the North, go down to a depth of 6 inches.