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Faunsdale, AL | That would get expensive!
Friend of mine had a 6" ? pneumatic "hog" that they used a lot. He said he needed to go under the abutment of a highway overpass in the city he worked for. I think it took almost a day to get through, but it did come out. Of course something like that probably has a uniform type of fill, compacted uniformly, etc.
At our place we got someone in to put a pipe 30-40' under a county road and their small hog kept wanting to come up in the center of the road! These old roads were graded up with the chalk subsoil and a thin sand/gravel fill was on top for many years before they were paved. The hog must have been hitting the different layers and glancing off. He tried a couple places before he got it to run right.
Edited by ccjersey 2/4/2012 10:15
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Pipe under roadway - questions arise
