How to deal with the well under the two-story foundation?

It is recommended to backfill with sand and gravel, with 50 operating points divided into one layer, and each layer shall be tamped with a tamping machine, with a tamping coefficient of not less than 0.94. Of course, there is no need to find a place for this small house, and the cost is high! Hehe, I'll help you design, excavate as a whole, two foundation pits, plus or minus 0, 2 meters down, and then backfill with sand and gravel 1 meter, each layer is divided into 30 worksites, and the coefficient is still the above one, so as to make the independent foundation, the cushion under the independent foundation is 10 worksite! This is absolutely no problem. Call me if you need anything!