How to Pour Concrete on Sand

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Patios can turn out really well when concrete is poured over sand. With the sand properly leveled, the patio will be relatively flat, a perfect space for chairs and a small table for entertaining.

Things You'll Need

  • Concrete
  • Chalk line
  • 2x10 form boards
  • Hammer
  • Double headed nails
  • 12-inch wooden stakes
  • ½ inch rebar rods
  • Rebar wire
  • Diesel fuel
  • Water hose
  • Rake
  • Mark the boundaries of your sand area with a chalk line from a building supply store.

  • Create a concrete curb by placing the 2x10 form boards around the perimeter of the sand area, about 6 inches higher than the top of the poured concrete. The boards will help keep the concrete from escaping your sand area.

  • Hammer the stakes into the ground at equal intervals (about 12 inches) using double headed nails. The stakes should be directly against the 2x10 form boards to hold them steady.

  • Dampen your sandy area and use a rake to smooth it out. The smoother the sand is, the smoother the concrete area will be after it is poured.

  • Spray the form boards thoroughly with diesel fuel so the concrete will not adhere to the wood. The diesel fuel must be completely dry before continuing.

  • Using ½ rebar rods, construct a grid on your sand area, forming 16-inch squares inside the boundary. You will need to lay one layer vertically and then another layer horizontally.

  • Tie the rebar pieces together with rebar wire, so the squares do not shift when you pour the concrete on top of them.

  • Pour concrete onto the sandy area, keeping it inside the form boards.

  • Allow the concrete to set for three or four days, and then remove the 2x10 form boards.

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