Things You'll Need
Instructions
Select a level location for your swing set. Make certain swings have clearance for safe movement, so that nothing will be hit by the swing.
Dig two holes 3 feet 6 inches apart. The holes should be at least 24 inches deep. Dig two more holes the same depth and also parallel to the first two. Place the 4-inch by 4-inch pressure-treated timbers in the four holes and fill around the posts with Portland cement. Level the posts using the level. Wet the cement so it will set up. Hold the posts level while the cement sets up.
Cut the 2-inch by 4-inch by 8-foot pressure-treated timbers in half.
Drill two holes in the top of the 2-inch by 6-inch by 8-foot pressure-treated timbers. Holes should be drilled at least 2 inches from the edge of the timber. Bolt these pressure-treated timbers to the top of the 4-inch by 4-inch posts.
Cut one 2-inch by 4-inch by 8-foot pressure-treated timbers into four pieces, each 2 feet long.
Drill holes in each end of the 2-inch by 4-inch by 2-foot pieces. Bolt these pieces to the sides of the swing set in the 4-inch by 4-inch posts. This will support the swing set.
Screw 4-inch swing hangers with lag screws into the 2-inch by 6-inch cross beams to hang the swings.