JG Afrika helped design a method to construct a three-level basement for a six-storey residence at 145 Kloof Road, Cape Town.

It comprised a reinforced-concrete box system, with tension anchors rooted within the property boundaries to resist horizontal forces and conventional vertical piles that intercepted the slip-circle plane.

Work on the basement commenced by excavating and installing a conventional soil anchoring system along the rear face.

A structural steel propping system was then placed to shore the side walls during excavation.

The girders were dismantled as lateral loads were transferred to the concrete floor slabs at each level.