One 
doesn’t automatically think of concrete as something that can be sawed, but we do it all the time in the plumbing trade. In this photo you see me sawing a path through a driveway. We removed a 24″ swath, excavated beneath it, and laid a 3″ drain pipe.
This isn’t easy work. It takes a few hours to cut that much concrete, get it out, and haul it away. The circle saw blade you see in use here costs $350. We used up about 1/4 of its cutting edge on this job, including some cuts to the brick and sidewalk behind the house.