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Bam on target at Gardenstown

gardenstown 2

Work at Gardenstown continues as Bam Ritchies completes first part of the work to stabilise the landslip that led to the road closure in November last year.

The road was reopened full time at the end of April while Bam delivered the preferred interim solution, designed by Atkins, to stabilise the slip, protecting the road and properties below.

Bam is installing steel mesh netting on the slope using 6m soil nails with a compressed-air powered drill rig.

Works at the crest of the slope have now been completed with the installation of 12 vertical soil nails down through between 4m and 12m varying depths of soil to bedrock.

Upon reaching bedrock the boreholes were continued to a minimum depth of 4m into competent rock, with the nails bonded into the resultant bores with grout.

Works for the remainder of the project will now focus on the installation of approximately 140 soil anchors in the slope face to tension the mesh.

De-vegetation and the clearing of loose debris from the slope has also been completed. This included the removal of a large tree at the base of the slope and two from the hill crest.

Around 40t of loose rock and soil has been removed in preparation for the installation of the soil nails, grout and mesh.

Further road closures may be necessary to accommodate works on site which pose a potential risk, such as the movement of large rocks or plant. These closures are governed by a bespoke traffic light system, which will also operate should movement of the slope above pose a risk to traffic.

Road users have been advised to obey any red light until an inspection is carried out by site staff and the traffic light system reset. Once the mesh work has been completed the lights will be removed.

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