Can anyone suggest what material should be used to replace? One local gentleman suggested plastic piping from the local hardware store, but that I may need to cut it myself. I'm not sure if I understood 100%, but I think he's just talking about some ABS plastic and cutting it into half-cylinders myself.
As much fun as digging the ditch was, I would prefer to not do it again any time soon. :) Can anyone suggest if such an approach would be a good solution, or if not can you recommend what kind of supplier to pursue these replacement tiles from?
The area surrounding the pipes is currently a mixture of dirt and gravel. I expected to find just gravel, but probably this has migrated around over the last 40 years. I assume I should resurround this bit of pipe with fresh gravel while I'm in here. Any suggestion on what size to use, how wide of a channel to fill with it, or other relevant specifications?