Nowadays box pushing technology is mostly used when compared to other methods. This method is used as it is safe for construction in major traffic areas and busy junctions. In this technique, RCC boxes separated in segments are cast outside and pushed through heavy embankments of rail or road by jacking system.

To construct opening below the ground the box pushing is done by providing precast units, without disturbing surrounding like traffic and structures. The thrust bed is made up of thin film of grease and thick gauge plastic sheet and the bottom of box is avoiding frictional resistance.

To form horizontal opening below ground pushing of box is done by providing precast units underground without disturbing overhead amenities like structures & traffic. A thin film of grease and thick gauge plastic sheets is provided between top of the thrust bed and bottom of the box to avoid frictional resistance.