|London - M25
For this bay, the earthworks solution was a sheet-piled retaining structure. This supports the new bay where the adjoining embankment slopes away sharply.
Site space was restricted in order not to disturb nesting birds.
The scope of the project included:
- Temporary works design
- Vegetation clearance and tree stump removal
- Installation of piling platforms
- Pre-auger 170m length to prepare for the sheet piles
We installed 120 individual sheet piles to between 6.5m and 13.5m in depth. Initially using vibratory methods until refusal, and then impact hammering the piles a further 1-8 metres.
We installed drainage, NRTS communications ducting and infrastructure, electrical lighting infrastructure, and the sub-base of the carriageway.
We also carried out surface drainage installation of combined kerb and drainage units and pre-cast concrete slot drainage.
“The measures put in place by the teams for M25 COFA and renewals relating to the COVID risk are good. Quality of workmanship on site very good.
The continuation of the works throughout the restrictions has been managed very well by the teams, and the measures put in place seem to be well managed and sustainable.”
Skanska operations director, Jun 2020