If there are no underground waters on the loam or clay land on the loop or clay land, then it is permissible to build vertical walls 1 or 1.2 m. And in other cases, the walls are temporarily strengthened with boards or make slopes.
If there are no underground waters on the loam or clay land on the loop or clay land, then it is permissible to build vertical walls 1 or 1.2 m. And in other cases, the walls are temporarily strengthened with boards or make slopes.
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