The construction of a Pisa II, Roman Pisa & Pisa Stone retaining wall is easy. Just follow these seven simple.
Remove soil to create a trench 12" deep and 24" wide. Shape the slope to allow for 12" of drainage material behind the wall.
2. Prepare Base
Place filter cloth in trench with well graded angular gravel and compact to a depth of 6'. Instructions
3. Level First Course
Position a level string line to mark the location of the first course. Place units in center of prepared base and ensure unit is level from front to back and side to side. Instructions
4. Stack Units
Sweep units and place next course of units on top in a running bond pattern. The edge of the unit should be at the middle of the unit below. Instructions
5. Backfill Place
Drain tile and free draining soil behind wall. Place gravel in front of wall to cover the first course. Compact all soil. Alternate between backfilling and placing units. Instructions
6. Secure Coping
Use approved adhesive to attach coping to the top of the wall. Use a line of adhesive near the front and back of the unit. Instructions
7. Finish Grading
Pull filter cloth towards top of wall and cover with soil. Ensure water will run away from the wall.