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Project: Knowls Lane Retaining Wall Oldham


Client: Oldham Metropolitan Borough Council


The contract involved a ground works package,

which included bulk excavations, deep drainage,

concrete works, waterproofing and backfilling to

basement structures.


The schemes involved the following work elements:


Phase 1 incorporated the road closure and bulk

earthworks to widen the lane to accommodate the extra

carriageway width and footpath. Batter stabilisation was

put in place to provide a safe working environment.

The reinforced concrete retaining wall was then cast in

stepped sequences to accommodate the new retained

heights. After placing back of wall drainage backfilling

operations were carried out to the appropriate levels.

The concrete retaining wall was then clad in imported

and reclaimed stone.


Phase 2 incorporated the installation of the carriageway

drainage and service ducts. On completion of the

carriageway drainage the road formation was excavated

and filled with compacted sub base, ready to receive

the bitmac. Environ kerbs were the preferred kerbing

system throughout the project. Bitmac was laid to the

carriageway and footpaths with white lining completing

the phase.


Phase 3 incorporated the regrading of the farmer’s field

and site compound. The opening of the new section of

carriageway and footpath allowed the removal of the

pedestrian diversion and traffic management.