Auger Boring and Pipe Ramming

Auger boring rotates an auger inside advancing steel casing and removes spoil as the casing progresses. Pipe ramming uses percussion to drive an open-ended steel casing, then removes the soil plug. Harrowgate selects and executes the specified method based on diameter, length, ground, alignment tolerance, obstruction, and crossing-owner requirements.

Accuracy depends on drive length, casing diameter, soil, launch setup, steering provisions, and the tolerance shown on the engineered profile. Harrowgate establishes survey control, builds a rigid track, verifies the lead casing, and checks progress during the drive. The accepted line and grade are the contract values, not a generic tolerance.

Send the plan and profile, casing and carrier-pipe schedules, crossing length, geotechnical report, utility information, shaft limits, access constraints, traffic requirements, restoration limits, and crossing-owner specifications. Harrowgate reviews the complete work area, including launch and receiving shafts, spoil handling, groundwater control, monitoring, tie-ins, and reinstatement.

Harrowgate coordinates valid locate information, reviews records, daylighting requirements, crossing clearances, and owner restrictions before excavation or casing advance. Critical conflicts are exposed where required. Survey control, exclusion zones, monitoring, and a defined stop-work response remain active throughout the crossing, shaft construction, and final tie-in work.

No. Auger boring and pipe ramming reduce excavation across the obstruction, but launch and receiving shafts, carrier-pipe tie-ins, and access still require planned excavation. Harrowgate self-performs and manages shaft support, groundwater control, casing installation, tie-ins, backfill, pavement or landscape restoration, and closeout documentation as one coordinated scope.

Settlement control starts with the engineered method, ground data, casing size, stable launch alignment, and disciplined spoil removal. Harrowgate avoids over-excavation ahead of casing, observes surface and asset monitoring points, records movement against action levels, controls groundwater, and pauses work when a trigger requires review before advance resumes.

Yes. Harrowgate self-performs and manages the crossing as a complete heavy-civil package, including shafts, steel casing, carrier-pipe installation, spacers, specified annular treatment, tie-ins, granular backfill, density testing, pavement, grading, and landscape restoration across the GTA and Ontario, with documented closeout records.