By that logic, the slab of my garage floor should be about five feet thick at
one corner. Instead, a reinforced concrete stem wall constrains engineered
backfill that was placed in 6 inch lifts and beat down to two inches with a
six-inch reinforced concrete slab on top. Compacted backfill is perfectly
fine. If the soil is collapsing already, "natural compaction" isn't so great to
start with.
Wes N7WS
On 2/3/2017 4:26 PM, Matt Lovewell wrote:
Just overpour the concrete. You'll never get the soil back to natural
compaction. No forms in the hole, just fill the void with concrete.
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