How to build a 2' retaining wall?
by
Karen
Looking to build a two foot high retaining wall, 64 feet long. Will I need a footer or a tamped bed of gravel? What is the best block to use? Was thinking cinder block, two high with the 4" cap. Not sure how to proceed for such a low wall. Thank you
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You need at least one full block buried below grade level on top a few inches of compacted base material. (We use what's called crushed bank: a mixture of crushed stone and stone dust.) You also need to use drainage rock behind the wall. Even though it is only 2 feet it high and can become unstable and topple over time. If you use cinder block you will need to fill the voids with gravel.
You would need at least 1/2 of a block below ground level not a full block. Use tamped down crushed gravel or pea gravel for the base. Back fill with soil and tamp down firmly. If you use cinder block you will need to mortar them in. If you use landscape block you can use concrete/landscape block construction adhesive in caulk tubes. If you go higher you will need to install perforated drain pipe behind the wall covered with gravel for drainage.