Thanks all. I was told the components of the fill were sand, cement, fly ash and water. It looks like they may have mixed some air in the fill too as it appears to have very tiny bubbles entrapped- like a dried foam material. (I was able to inspect a small sample that was spilled on site).
I...
Thanks for putting the "low strength" designation of flowable fill into perspective for me. Very sound reasoning. No one seems too concerned about placing the footings on top of fill versus directly on the bearing soils so I guess I need to take a Valium and relax. My biggest concern is what...
Thanks again. I guess what I am struggling with is the use of flowable fill between the foundation footing and the bearing soils. It seems logical that placing the footings at the bottom of the trench would have been a better approach to building the foundation. The big question is, how much...
Thanks for the advice. I decided to go with flowable fill. When digging the footings, soft/moist soils were encountered and had to be undercut, requiring extensive use of flowable fill- 32+ inches in some areas to support 10" x 24" continuous concrete footing- considerably more flowable fill...
Is flowable fill a good option to use as undercut fill for a continuous trench concrete foundation in moderate shrink-swell soil (residential construction- large house)? I wanted to use #57 stone, but the contractor insists on flowable fill (to save on labor). The trenches are 24" deep...
