Dozerman56: our suitable backfill would be a well graded bank run gravel.
A local contractor took it upon himself to replace the material in a utility crossing in a road constructed across a swampy area with crushed stone a few years back, and that trench is either a 6-inch speed bump or a...
Oh yea.. I spoke with the Ductile Iron Pipe Research Association (DIPRA) and they said that lime won't have any corrosion issues, (clay soils should always send up a red flag though).
The problem with overexcavation and backfill with gravel, is we end up with a trench that heaves and settles at a different rate than the existing road- giving the appearance, and same end result, of a trench failure. Idealy we would reconstruct the entire road if unsuitable material is...
I'm looking for some information on lime treatment in utility trenches- more specifically, for drying of wet soils.
When trench soils are too wet to be properly compacted back into the trench, contractors generally say drying by discing and harrowing is inefficient and costly, and want to be...
