Granite Construction Box-jacking 4K Time-lapse

Granite Construction was one of the first to hit a major construction breakthrough in the US, captured in this 4K time-lapse-jacking a precast concrete box under an Orlando roadway in a matter of months. In this short movie you see hydraulic jacks push two precast concrete boxes, measuring 146-feet and 126-feet long respectively with 42-ft side walls, while an excavator digs out a path from inside the box and from the opposite side.

Видео Granite Construction Box-jacking 4K Time-lapse канала EarthCam