Back riddle substance? My foundation is done, and I need fabric to backfill, and...

My foundation is done, and I need fabric to backfill, and the soil there be wet clay, so I have to remove the center of the foundation down to the four foot footing area. So presently I need to swarm up the inside as well as the outside of the foundation.

I am looking for recommendation for materials to use, trying to keep the cost down as much as possible. The center is the biggest problem, 1500 square foot, three and a half foot high, so I would close to to try to keep the cost down.

Any recommendation would be greatly appreciated.
Why are you filling the inside? 4' is a wearing clothes size crawl space if you ever needed to access the underside of the house.

Use drain tile and drain rock around the outside for the downspouts to empty into.


Any local construction going on? Any landscape clearing? Any ads or notification of free fill, even "Rubble" saturate? Have you cleared the clay hardpan, in the nouns? Can you haul any crawl? OR check out constructions that might be Ok dumping a truck load on your lot?

Just my two "sense"

By my not so great math calc. you're looking at something beneath 4700 CU FT of fill, near NO crawl space
Answers:    if its available use river rock as your bulk material