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Bam on time for Gardenstown stabilisation work

The stabilisation of a landslip that cut off a village in Aberdeenshire has been completed on time by Bam Ritchies.

The landslip led to a road closure in November last year, which cut off part of the village. 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 has installed steel mesh netting on the slope using 6m soil nails with a compressed-air powered drill rig.



Works at the crest of the slope included the installation of 12 vertical soil nails down through between 4m and 16.5m varying depths of soil to bedrock, where 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.

In total 120 soil nails were installed - 17 vertical nails in the top row and 103 nails in the face of the slope.

11 rolls of Tecco slope stabilisation mesh were installed, covering a total area of 1200m².

The stabilisation work also included the de-vegetation and the clearing of loose debris from the slope, including 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 was also removed in preparation for the installation of the soil nails, grout and mesh.

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