Backfilling Trench with GW
Backfilling Trench with GW
(OP)
Can anyboby can give me some idea how to backfill a 10 feet deep 1000 feet long trench to 90% compaction with import but the trench is fulled with 5 feet groundwater(100 gal/min). I know that you will suggest flooding or 2-sack slurry them, but what if these solutions can NOT be the options. Anyone, please?





RE: Backfilling Trench with GW
RE: Backfilling Trench with GW
RE: Backfilling Trench with GW
RE: Backfilling Trench with GW
Another option would be to put in coarse to medium sand and then temporarily drop the water table to the excavation bottom. That should tighten the material fairly well.
RE: Backfilling Trench with GW
Your comment definitely can help my situation here and save me big bucks. By the way, if I may ask, since that we all know that it is impossible to get a max on the pea gravel in the lab, also, the gravel seems compacted pretty good with few passes by the vibrate-drum. How can I convince the inspector and other authorities that my trench has been well compacted with pea gravel? Thanks first!!
RE: Backfilling Trench with GW
Now take the cylinder mold and hold it up against the vibratory drum for a couple of seconds. Add aggregate to overfill then hold against drum again. Screed the top and weigh. You'll likely find your "vibrated" weight to meet or exceed your dry rodded weight (the "standard").
RE: Backfilling Trench with GW
What more can I say? Ron, are you sure that you are a structurl engineer? Thanks again!!
RE: Backfilling Trench with GW
RE: Backfilling Trench with GW
RE: Backfilling Trench with GW
RE: Backfilling Trench with GW