180-metre chalk cliff face in Greenhithe, Dartford had significant vegetation growth on a large proportion of its surface with 5 locations across the cliff identified as cause for concern due to the presence of trees, major fractures in the rock and a high degree of weathering on the face.
Three main access points were established to facilitate operative access to the cliff face for removal of vegetation by professional tree surgeons accompanied by an ecologist to ensure no wildlife was disturbed. A 50-tonne mobile crane was deployed to transport materials up and down the cliff.
Once the vegetation was cleared, a geotechnical specialist was required to inspect and complete a detailed assessment to inform the scope and design of remedial measures to ensure the safety of the residents living adjacent. Debris netting was installed with 4m long dowels/anchors grouted into pre-drilled holes formed with specialist's drifter drilling equipment and methods to the cliff face.