• Compact Sub Base to 95% Standard Proctor Density or greater
• Remove any poor soils in the Sub Base and replace with proper fill materials before compacting

• Compact crushed stone leveling pad to 95% Standard Proctor Density or greater
• Ensure pad is level and smooth to allow placement of blocks

First Course Procedure

• Lay perforated drain pipe in center of leveling pad
• Place first course of block directly on leveling pad over the drain pipe

• Fill all voids with clean crushed stone
• Sweep off excess crushed stone in preparation for next course

• As required, place Geotextile filter fabric between blocks and compacted backfill
• Compact backfill behind blocks in lifts no more than 12″ high
• Lay second course of blocks on top of the first course
• Continue to fill voids with crushed stone for proper drainage

• Lay geogrid strips over top of each courses of blocks
• Overlap adjacent cources ~2 inches

• Continue compacting backfill material in lifts every 12″ as subsequent block course are placed
• Continue to lay block course until the top row is completed

• Ensure that final grading is done on top and bottom of the wall
• Make sure to protect newly placed planting soil from erosion during heavy rains or surface runoff