Mine is 3-4", and was cut accidently during sprinkler installation as a result. It's supposed to be 8" or more.
My neighbor's phone line is buried one shovel width below the surface (around 8") because when it was being replaced, I told the electrical contractors I couldn't deal with anymore digging up of my lawn (I had just finished fixing it after they dug down 4 feet to lay electrical conduit). So, they obliged and hand-dug it in, but didn't go real deep. Also, parts of my sprinkler tubing are only 3.5" deep because I couldn't tell the contractor for sure how deep the gutter pipes were buried, so in one section, he went very shallow (the rest is 8" deep). I can't ever aerate that area...unless I can come up with a way to put the pipe deeper.
My neighbor's phone line is buried one shovel width below the surface (around 8") because when it was being replaced, I told the electrical contractors I couldn't deal with anymore digging up of my lawn (I had just finished fixing it after they dug down 4 feet to lay electrical conduit). So, they obliged and hand-dug it in, but didn't go real deep. Also, parts of my sprinkler tubing are only 3.5" deep because I couldn't tell the contractor for sure how deep the gutter pipes were buried, so in one section, he went very shallow (the rest is 8" deep). I can't ever aerate that area...unless I can come up with a way to put the pipe deeper.
