When you are building in Alexandria, ALWAYS order a soil report. Even if you are told it’s not needed. Order it anyway.
We were ready for the inspection of the ADU footers before concrete prep started and we had to stop to check the soil. The City recommended a local company and they scheduled us within 2 days so this should be a very short delay.
Why? Alexandria is built on marine clay and that isn’t idea for stable structures. Marine clay does not absorb water well had has a lot of movement. Our reno was ok and the clay was strong enough for our house and addition without extra reinforcement.
Initial reviews by the soil engineers look good - they dug 11ft and no water! Now we wait for the report to see if we need to make the footers deeper or add additional supports.
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