footing resting on backfill
footing resting on backfill
(OP)
can we recommend that column footings may rest on compacted backfills? is it common to practice? do we need to do geotechnical tests to compute for the bearing capacity of backfill?






RE: footing resting on backfill
RE: footing resting on backfill
RE: footing resting on backfill
RE: footing resting on backfill
Professional Engineer (ME, NH, MA) Structural Engineer (IL)
American Concrete Industries
www.americanconcrete.com
RE: footing resting on backfill
RE: footing resting on backfill
RE: footing resting on backfill
If this is a problem, we often go with a CLSM (controlled low strength material) or slurry for backfill adjacent to structures.
RE: footing resting on backfill
Professional Engineer (ME, NH, MA) Structural Engineer (IL)
American Concrete Industries
www.americanconcrete.com
RE: footing resting on backfill
RE: footing resting on backfill
RE: footing resting on backfill
RE: footing resting on backfill
oldestguy, I've never thought about that. We usually ask the contractor to scarify the first eight inches and re-compact, but that does nothing for the remaining soil.
And here's a question that will blow everyone's mind; We ask for foundations to be carried down to native soil all the time. How long does it take for backfill to become native? Ten years? Fifty years? One hundred years? Geologically, everything was fill once. Maybe a glacier did the compacting, but it still was backfill.
RE: footing resting on backfill