When larger diameter pipe needs to be installed under roadways, small waterways, railroads or other permanent structure the solution is the horizontal jack and bore method. Most water transmission and distribution specifications require a steel casing to be installed to shield the material carrier pipe. In order to install this type of casing two large excavations must be made to accommodate a small track, similar to a railroad track for the auger engine to drive on. The other excavation is the receiving pit where workers will connect cap the casing and connect the carrier pipe to fittings to bring it back up to a less deep more workable depth. In most installations the launch pit where the auger engine operates must be almost 30' long and a depth 2' below casing invert elevation. Casing must be cut down to 10' lengths to get in between shoring unless a bench or slope cut excavation is made where there is no shoring required. A typical jack & bore operation takes special planning and at some point as the bore diameter size increases an OSHA tunneling and mining permit is required. All work is inspected with approved pipeline inspection methods.

If you are in the need of our jack & bore services please contact our office to arrange delivery of project specifications Click here.