How to Build a Retaining Wall - This Old House
https://www.thisoldhouse.com/yards/21015197/engineering-a-retaining-wall
WebSure, retaining walls look like simple stacked stone, block, or timber. But in fact, they’re carefully engineered systems that wage an ongoing battle with gravity. They restrain tons of saturated soil that would otherwise slump and slide away from a foundation or damage the surrounding landscape.
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