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Rock Foundations - Monte Mayor Villa Renovation

Monte Mayor Villa Renovation

Rock Foundations (SL) was engaged to provide the ground engineering for a complex underpinning solution to a large property in the prestigious Monte Mayor urbanisation which was suffering from significant slope stability issues. The initial priority was to stabilise the slope which was causing structural failure to large parts of the property, to do this Rock Foundations (SL) installed a “curtain wall” of piles, comprising of 54 number 200mm drill bar piles socketed in the rock at a depth of 9m with the use of the Klemm 701 piling rig.

Having successfully stabilised the slope, work could commence on securing the property and rectifying the severe structural defects. The immediate concern was to provide a safe environment in which to carry out the extensive rebuilding of the failed elements providing structural support such as the columns and load bearing walls.

Following the installation of steel props, supports and jackets around the existing columns, the damaged walls to the basement were carefully removed. In a safe sequence a total of 78 number 200mm drill bar piles were installed to underpin the existing columns and provide support to the foundations for the new in situ concrete basement walls.

Once the micro piling had been completed and the structural grout given sufficient time to cure a ground beam was constructed incorporating all of the foundation micro piles. Finally an in situ concrete wall was constructed to complete the basement construction and provide support to the rest of the structure.

The new concrete walls were prepared for the application of two coats of sealant, an additional Sica membrane was applied prior to backfilling to ensure the newly formed basement structure remained waterproof and damp free.

The change in the property is quite remarkable. It is fair to say that any person who has had cause to enter the property over the past couple of years had done so with some degree of caution! The completed structure now leaves you with the feeling associated with a substantial structure.