brick, stone, or broken concrete. Be sure to keep the fill at least 4 in.
away from the side forms, the riser forms, and the top of the treads and
landing. This will assure that you get a minimum 4-in. thickness of
concrete over and around the fill material. Place a sheet of wire mesh
reinforcement in the form (Figure 8-21), holding it back from the edges
about 3 in. so that it will be completely embedded. Start pouring the
concrete in the bottom step. Fill the next step with a shovel, tamp the
concrete to fill in corners