Slope Stabilisation

Contract Details

Cumnor Construction Ltd carried out the role of Works Contractor and PSCS for this project.

The work consisted of embankment reconstruction, netting, shotcreting, soil nailing and installing ground anchors as well as the construction of reinforced concrete retaining walls and gabion retaining walls. Soil nails were installed to reinforce the sea wall. A reinforced concrete retaining wall was constructed at the base of the wall and anchored into the rock using ground anchors. These soil nails/ anchors were grouted and tested. Records of these results were tabulated and submitted to the client. A large steel frame was constructed to the seawall, bolted on concrete reinforced pads, and anchored into the rock.

All of this work was scheduled to coincide with low tides. A safe means of access to the base of the wall had to be provided as the waters encroached onto the working area at high tide.

The area was environmentally sensitive. Adequate protection measures were put in place during the construction period.

Traffic Management measures were place for the duration of the works.   Access points maintained to private dwellings. The traffic management plans were drafted and submitted to Cork County Council and An Garda Síochána prior to works commencing.

Contract Details

Cumnor Construction Ltd. carried out the role of Works Contractor and PSCS for this project.

The contract involved the stabilisation of cliffs using netting, shotcreting horizontal drainage systems and the installation of 142 Soil Nails. A concrete toe was installed at the base of the shotcrete in order to support the shotcrete above.

The works were located below, within and immediately adjacent to the inter-tidal zone. A safe working platform was specifically designed and built to cater for tidal effects. The existing cliff face was cleared of all vegetation and removed off site . Great care was taken to ensure the waters below were not contaminated.

Traffic management measures were designed in-house and implemented in order to undertake the work.

Contract Details

Cumnor Construction Ltd. carried out the role of Works Contractor and PSCS for this project.

The contract comprised of the stabilisation of an embankment. A total of 135 Soil Nails were installed and grouted into the embankment. Remedial works were carried out to an existing stone wall. This work included installing new foundations and rebuilding the wall. Other sections of the wall were repaired, rebuilt and repointed as required. The road was resurfaced. Rotting trees were removed from the embankment. General vegetation clearance of the area was also carried out. Environmental measures were implemented to ensure that the River Clyda was protected from pollution whilst the work were being completed.

Traffic management measures were in place throughout the contract duration. These measures were designed in-house and approved by Cork County Council.

Contract Details

Cumnor Construction Ltd. carried out the role of Works Contractor and PSCS for this project.

The project involved the installation of stone filled gabion retaining wall baskets over a length of 95m to protect an embankment previously damaged by a flooding event.

The works were carried out within a busy car park. The existing watercourse was diverted for the duration of the works in liaison with the Inland Fisheries and local authorities. The water bed was prepared for installation of Gabion Baskets. Stone Filled Gabion Baskets and Reno Mattress Gabion Baskets were installed and formed to match existing profile. Back-filling behind the Gabion Baskets with suitable stone was carried out. Drainage pipework was installed through the newly formed retaining wall as well as a Geotech layer and topsoil was added.

Additional work included the construction of earthen berms, the reinstatement of  tarmac to the car park and the diverting of the water back to its original route.