How deep need EMT be under a cememt walk? Or, can the walk itself act as 'running boards' to protect it?
Also- does the extensive rusting of the EMT where the elbow enters the ground perhaps suggest that EMT might not be appropriate at all?
There was no grout- to expose the pipe, I simply needed to use a broom. Nor was the walk completely cut- it appears that someone simply put an abrasive blade in a circular saw, and made several passes, as deep as the saw would go.
From most of the illustrations I've seen, they always placed the piping at least under the actual slab, not just a few inches from the top. It looks like dirt under there, I'd say remove as much as you can and get as deep as you can, then run it.
#121921 - 09/02/0501:36 AMRe: EMT- Burial Depth Necessary Near Sidewalk?
Interesting picture John. Putting metal conduit in damp soil is just asking for trouble. Over here, we have a rule that states no underground cables, pipes or wires shall be buried less than 600mm (2ft) below grade. With a plastic marking strip at half trench depth.
#121922 - 09/02/0502:27 AMRe: EMT- Burial Depth Necessary Near Sidewalk?