How to build a concrete patio slab?
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1. Begin by leveling the ground where the patio will be located. Make sure the area is level and free of debris and vegetation.
2. Calculate the amount of concrete you need based on the size and depth of the slab.
3. Install forms for the slab. Place 2×6 boards around the area to create a form. This will act as a guide for the concrete pour.
4. Build the footings for the patio slab. These should be at least 12 inches in diameter and deep enough to reach below the frost line. Mix and pour the concrete.
5. Reinforce the concrete slab. To do this, use metal reinforcing bars (rebar) or wire mesh. The reinforcement should be laid out in a grid pattern inside the form before you pour the concrete.
6. Pour the concrete into the forms. Use a hand trowel or rake to spread the concrete evenly and level the surface.
7. Smooth out any rough spots with a hand float or trowel. Allow the concrete to dry for 24 hours before removing the forms.
8. Remove the forms once the concrete has cured. You can then finish off the edges of the patio using a power trowel or edger.