The Q&A Archives: Constructing Hillside Garden

Question: I am planning a hillside garden on a new property. Is there a formula for figuring how many terraces to construct so it won't end up pushing the retaining wall over?

Answer: It sounds like you are looking at a major project. You might look at some books about landscape construction to get a general idea of the issues involved. In any case, the construction requires secure footers reaching well below the frost line, a drainage system behind the wall to avoid excess water pressure, and other measures to ensure safety and durability. Needless to say, this is very heavy work. Retaining wall construction can be very complex even for small ones. You might want to consult with a landscape architect or contractor about your plans to make sure they are safe. Building permits may also be required, so you'll need to check the building code, too. Good luck with your project!

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