Landscaping - Retaining Walls
This tutorial is designed for beginners interested in developing stone retaining walls, 3 feet in height or shorter, using a dry-walling or "dry-stack" method. Other materials that can be used for such a job consist of landscape lumbers or recovered railway connections, concrete, as well as landscape design block (such as you generally see at home improvement shops). However the step-by-step instructions given below are implied especially for walls built of stone.
Lay perforated drainage tubing at base Water-soaked soil is the worst enemy of retaining walls because it exerts enormous pressure behind the wall. Adding good drainage behind block or stone walls is crucial for long-lasting, bulge-free walls. Start by laying perforated plastic drainage tubing along the base of the wall slightly above ground level so it can drain to daylight. Slope the tubing about 1/4" per foot.