Fill For Undermining Utility Trench
Fill For Undermining Utility Trench
(OP)
A contractor that I work with has apparently cut a 10" wide by 26" deep trench for a domestic water line, just outside of the foundation for an existing house. There's pretty much a vertical cut right beside the footing. It's obviously too late to stop them. How should they fill this trench? My initial thought was a flowable fill, but my concern is that the water content may cause the vertical cut to collapse. I'm not sure if sand is a reasonable solution, or, if it may be possible to do a sand/portland cement mix, and place that in the trench dry? Any thoughts?





RE: Fill For Undermining Utility Trench
RE: Fill For Undermining Utility Trench
RE: Fill For Undermining Utility Trench
RE: Fill For Undermining Utility Trench
RE: Fill For Undermining Utility Trench
I would be comfortable with oldestguy's response. Some form of compactable fill (depending on area crushed limestone works well) and the jumping jack style compactor. Those jumping jacks do a great job of compacting it however you might want to consider doing it in lifts because if you ran it on 26" thick of loose fill it would bury itself in the first two jumps.
RE: Fill For Undermining Utility Trench
RE: Fill For Undermining Utility Trench
RE: Fill For Undermining Utility Trench
RE: Fill For Undermining Utility Trench
RE: Fill For Undermining Utility Trench
RE: Fill For Undermining Utility Trench
Bob