Civil Engineering November 2022 | Vol 30 No 10

Q Q 225 m 2 of gunite walls, comprising 100 mm thick 25 Mp gunite and one layer of 395 mesh. Q Q 204 structural piles suitable to carry axial loads of up to 5 500 kN and bending moments of 1 240 kN. BRIDGES ON NATIONAL ROUTE R510 The two bridges that formed part of this piling project are located on the same road, and in close proximity, however the in-situ substrata conditions were very different. Piling to the first bridge consisted of thirty-six 600 mm diameter continuous flight auger piles to an average depth of 11 m, and socketed 2.5 m into R2 soft rock. Piling to the second bridge consisted of twenty-four 750 mm diameter temporary cased oscillator cast-in-situ piles that were installed to an average depth of 29 m and socketed into the hard rock formation. INSTALLATION OF VERTICAL DRAINS, EVERGLADES This installation project of approximately 106 000 m of prefabricated vertical drains across roughly 15 000 positions, in a square configuration and over an area of 75 000 m 2 , required the drains to be in- stalled in stiff, silty and sandy clay ground, up to 12 m deep. These drains will act as a drainage path to take pore water out of the soft compressible soils in order to consolidate the soil. PILING TO NEW DATA CENTRE The group is participating in a number of fast-track data centre construction projects in the Western Cape region, and the Geotechnical Discipline welcomed the opportunity to participate in a Gauteng-based data centre develop- ment. The 12-day project comprised 241 auger cast-in-situ piles installed to an average depth of 10 m. The piles ranged between 450 mm and 1 000 mm diam- eters. Due to the timeframe, Stefanutti Stocks utilised three piling rigs on the contract. “Our site and management teams offer vast experience, with many of them having worked in the industry for well over two decades. Our company-owned geotechnical fleet also supports our agility to mobilise quickly and plays a key role in our ability to be responsive and cost-effective in delivering our services and solutions to various infrastructure sectors within the built environment,” says Erasmus. For more information If you have a geotechnical and lateral support project and would like to discuss designs, budgets, materials, and installation methods, please contact: Tiaan Erasmus Stefanutti Stocks Geotechnical Commercial Director tiaan.erasmus@stefstocks.com +27 (0)11 571 4483 The CTS Brochem Plant Extension consisted of 436 piles of 450 diameter Geotechnical work was performed at two bridges on National Route R510 in very different substrata conditions Civil Engineering  November 2022 5