Excavate trench 200 mm (8 inch's} deep and 400 mm (16 inches wide}. Place and compact gravel to 100 mm (4 inches} depth.
First Course
Place only standard units on gravel base. Ensure units are level from front to back and from side to side.
Stack Units
Stack units along wall. Coping units can be used in the wall, but should not be stacked on other coping units without adhesive.
Finish Wall
Place a line of adhesive in front of and behind the tongue on the second last course. Position coping stones on top. Fill with compacted soil to top of the wall.
