I purchased two pallets of castlewall blocks to build a two foot high
retaining wall to replace a railroad tie wall that had gotten rotted and
ugly. I then found that removing the ties was a major problem and was
wondering if I could successfully build the wall just in front of the ties,
which would require the base course be on the concrete driveway. That would
entail chiseling the lips off that base course. Has anyone had any
experience in laying these blocks on a concrete base rather than sand?
As Always Thanks,
Bob T