Do I need a French drain?
I have a walkout finished basement in a new residential project, and I’m curious whether it even makes sense to include a corrugated French drain. The homesite is the crest of an old glacial moraine and it’s on a combination of soil, gravel and rock with very good natural drainage (per the septic perc test). French drains are not required by code and many builders here skip them.
Would it be wise to skip the French drain and just fill the foundation excavation a foot or so with sewer rock covered with fabric to keep the footings dry, then backfill with natural materials? Of course there’s no real downside to adding a French drain, but if there’s no real significant upside I’d rather put my time/money into just laying more sewer rock around the footings.
Location is Anchorage, Alaska. Photo of the current state of the project attached.
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