Notice: sheet piling works in the Westgate Site

What we are doing

We are planning to carry out piling works at our Westgate Site in Hanger Hill from early-April 2021 for up to three weeks. These works are needed to stabilise the ground and protect the Network Rail tracks while we build a ventilation shaft at this site. We will be reducing the ground level in our site by three metres, in preparation prior to building the ventilation shaft.

Our piling method
We will be installing sheet piles at our Westgate site.  Sheet piles are commonly used for retaining walls and underground  structures to provide stability and support during excavation works. These are sections of sheet metal with interlocking edges that are pushed into the ground along an area where future excavation work will take place. When arranged side by side, the sheet piles form a wall to provide permanent or temporary earth support.

We are planning to use a pre-auger drill to loosen the ground and then push the piles into place using a vibration method. In the event that we find hard ground or obstacles, a vibro-hammer may be used for a short period of time to disturb the ground and drive the sheets through the hard areas.  You may experience a short period of increased construction noise.

Noise and vibration monitoring will be in place throughout these works. We will use water sprays to reduce dust generated by construction activities.

Our working hours
Our working hours are Mondays to Fridays from 8am to 6pm and Saturdays from 8am to 1pm.
Noise generating activities are scheduled after 8am and during our core working hours where possible. Some
works may occur outside of these hours, including concrete works and works next to the railway tracks which
must take place during a rail possession. When work is planned outside of standard hours, we will notify you
in advance.

What to expect
There will be heavy goods vehicle movements and deliveries to our Westgate site prior to the start of the
sheet piling works. During the works, you may notice large construction equipment and machinery in our site
during these works including:
 Heavy goods vehicles
 Piling and excavating machinery
 Cranes
 Lighting towers
 Concreting equipment

Download information relating to these works

• Notice: sheet piling works in the Westgate Site

If you have a question about HS2 or our works, please contact our HS2 Helpdesk team on 08081 434 434 or email [email protected]