Distance from retaining wall to house wall
We are working on plans for a new house in Western Wisconsin, and have a sloping site. We are working on a plan to have all critical living spaces on the lower floor to make it easier as we age. My original thought was to have the lower level as a walk out basement, but insulating and waterproofing a below grade wall seems expensive and difficult. There is about a 6′ to 8′ difference in elevation in 30 feet of slope, so a retaining wall behind the house could be 6′ to 10 feet in height. It would probably be stepped in 2 or 3 tiers as necessary–space isn’t a problem.
My concern is the minimum distance that makes sense from the back of the house to the base of the retaining wall. I am assuming that at least 10′ to 15′ would be good so that the grade at the house can slope back to the wall to ensure drainage away from the house.
Any suggestions or concerns that I am overlooking?
Jim in western Wisconsin
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