For the residential trench we usually hand dig the 6" trench. over the years we found there were more costs involved with the trencher, machine problems, roots, buried bricks, clay, sprinkler pipes, cable lines, and setting up, so for 6" trench hand dig just goes fine, and we get a line mark for every dig, if we can't dig it our hands we have it line marked, the cable company has runs as little as 4" and another great find is gas lines going to pool heaters and back yard grills, the fine here in Jersey is steep, and many EC's still have accidents even with the line mark.
Oh ya, famous last words, it's the backyard, and i looked and there is nothing there, just dig the thing, get it done.
[This message has been edited by LK (edited 06-04-2005).]
