I worked with an old-timer who use to tell me about garden hose in concrete slabs. I guess they would plug both ends and fill it with water and pour around. Then they would let the water out and pull the hose out of the concrete creating a nice round raceway.
I guess it was either red-neck or cheap.
"If common sense was common, everyone would have it"-not sure, someone here
Top this guys.... Not too long ago I was part of a conversation where one of the participants (not me) was bragging about using black plastic lawn irrigation pipe to run natural gas from his house to the garage. I kept my mouth shut as the guy was busy justifying how and why he did it and how much money he saved
I used to work for a combined electric and gas utility company, and it wasn't uncommon in the ghetto areas, to find plain old cheap garden hose used to pipe gas, especially from a customer who was still PAYING for gas service, to all the neighboring deadbeats who were stealing his service.