assemble

Step-by-Step

Fasten a 2x4 kicker plate to the concrete footing using masonry nails. Drill holes for the cross-ties in 3/4-inch plywood, in the pattern recommended by the retailer. For speed, stack the sheets and drill holes through several at once. Insert the ties from the inside of the form and hang the clamps on the ties. Set 2x4 whalers in place and tighten the clamps by tapping them with a hammer. Reinforce corners with 2x4s and plywood.

pour concrete

Brush or spray old motor oil on the inside of the forms. Enlist a helper or two. While one person aims the chute into the form, the other consolidates the concrete (see caution box on page 1). Begin by pouring a few inches of concrete inside the entire form. Then fill 1-1/2 feet at a time to avoid abrupt pressure on the forms. Don't let concrete harden between passes or the wall won't seal out water. Strike off the top with a steel finishing trowel.