My son and I did a tile repair job last week. It was an old 18" concrete line that had blown out. I recommended putting an inlet in when fixing it so that it had a relief so that it was less likely to blow out again. I was glad I did, because once we started digging we found out that it had already been repaired years ago and there were multiple places where the concrete had already been replaced with plastic. We replaced a good chunk with new dual wall plastic. The old plastic they had patched with was single wall and it came apart like a slinky as I dug it up. I was wondering if anyone had ever seen anything like this before. I also included a picture of my son carrying the new 18" T. He said it was the easiest way for him to carry it.

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(tile carrier (3) (full).jpg)

bad tile (3) (full).jpg (326KB - 179 downloads)

tile carrier (3) (full).jpg (238KB - 236 downloads)