soil nail wall
soil nail wall
(OP)
Are soil nails AS EFFECTIVE when drilled into old concrete slurry fill as when drilled into the weathered bedrock we thought was there ? This is under a structure which must be supported by the soil nail wall. If the concrete/slurry is NOT competent as a foundation mat'l., it'll have a failure plane similar to, but different from, the soil nail 'least F.S.' plane. Has anyone any experience with this ?





RE: soil nail wall
RE: soil nail wall
While its almost inconceivable that the wall doesn't add something to the stability of the cutting, I would be very worried that it may have been put there because the previous contractor thought they were going to find weathered rock and actually found something significantly poorer.
My advice is to knock this one straight back to the Engineer.