Add a 2-3 inch layer of gravel or crushed stone at the bottom of the excavated step area, behind the retaining timbers. Compact this layer thoroughly using a hand tamper or plate compactor to create a stable base.
Step 4 · Compact Base Material
Add a 2-3 inch layer of gravel or crushed stone at the bottom of the excavated step area, behind the retaining timbers. Compact this layer thoroughly using a hand tamper or plate compactor to create a stable base.
