fixing busted sprinkler lines?

[tgrebis]

As a was enlarging a customers bed in a new development I proceeded to bust three sprinkler lines that were at best 3" under. I fixed then with metal pipe,teflon tape and those screw strap thing a-ma-giggers. I wanted to know the correct the way to fix these lines and is it typical for sprinker companies to run lines less than ten feet from the house.

Thanks.