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.
A 6-inch-thick slab weighs only about 75 psf, and live loads â anything that is not part of the building itself, including vehiclesâtypically donât exceed 50 psf in a garage. That means that the soil under a typical garage slab only has to be able to support 125 psf.