In this video we show you how to pour your basic 16 x 12 Concrete Slab! We go over all the necessary steps for your concrete slab to come out perfect! We show you how to form the slab, put rebar in at 2ft x 2ft centers, rod it, bull float it, put joints in, edge it, use the fresno/Big Blue and broom it.
image/text credit: Odell Complete Concrete
Mark the edge of the area with a spade, cutting down into the grass. Dig down to the required depth recommended by your local code department. Include slab depth and crushed stone in your calculations.Level pegs around the site to the depth of the concrete pad plus foundations.
image credit: Odell Complete Concrete
Nail boards into the pegs. Insert further level pegs and boards to divide the slab into manageable strips. This wooden frame is known as the formwork.
Pour foundation concrete into the first section. Use a screed board in a chopping motion to compact it, then level the surface. Use a float to smooth the surface of the concrete. For large areas, consider renting a power float or screed.
Your concrete slab will last longer, with less cracking and movement, if it’s built on solid, well-drained soil. If you have sandy soil, you’re in luck. Just scrape off the sod and topsoil and add gravel fill if needed. If you have clay or loam soil, you should remove enough to allow a 6- to 8-in. layer of compacted gravel under the new concrete.