Bolton Retaining Wall
The scheme compromised of the removal and replacement of a 280m long, 3m high, failed existing mass masonry retaining wall. The project was completed between an existing reservoir and busy carriageway. Traffic disruption was kept to a minimum allowing two way traffic through 90% of the construction phase and was completed within time and budget.
The schemes involved the following work elements:
- Installation of temporary works which allowed for the drilling of the carriageway to depths of 9 metres using a lorry mounted augur.
- Placing of King Post I Beams up to 9 metres long with a concrete surround.
- Installation of MGF Panels which retained the carriageway during the demolition and construction phase.
- Demolition and excavation of the existing failed mass masonry wall.
- Construction of reinforced concrete retaining wall including reinforcement steel pan shutters and concreting.
- Masonry walling to retaining wall.
- Installation of back of wall drainage.
- Masonry walling to reinforced concrete stem with a mass masonry parapet.
- A manufactured coping to match the existing half round type.