Construction World December 2023

AFRISAM INNOVATION AWARD FOR SUSTAINABLE CONSTRUCTION

T he Stella P1 basement structure came about as the existing lateral support wall along West Street in Sandton needed to be laterally supported due to the existing anchors having reached their expiration date. The client made the decision to support the lateral walls by constructing the future structures basement levels. The WBHO & Tiber JV was appointed to carry out the works required to make the lateral support walls safe. Due to the high-risk nature of the excavations that would need to take place and the sensitivity of the lateral support walls along West Street, specialised equipment STELLA P1 BASEMENTS

was brought in to commence with the base excavations: • This included the use of four 8-ton excavators that could be dismantled into component form and lowered into the basement area with the use of a tower crane that was erected in the centre of the works area. • All excavated material was removed by utilising a fleet of skid steers and small motorized dumpers. • All rock removed had to be broken down to a size that could be handled by the smaller earth moving equipment. • The existing stone drainage layer was removed and

90 22 nd Best Projects Awards 2023