Civil Engineering November 2022

South African Institution of Civil Engineering Civil Engineering November 2022 SiviliEnjeneereng November2022 Vol30No10 ON THE COVER Stefanutti Stocks Geotechnical is an invaluable construction partner, with almost two decades of experience in this niche discipline. The business offers the full spectrum of geotechnical contracting services, boasting almost two decades of successfully completing technically challenging and pioneering piling and lateral support projects. SiviliEnjeneereng November2022 Vol29No10 SANRALSAICE2022NATIONAL AWARDSWINNERSANDFINALISTS BALLOTONPROPOSEDREVISIONS TOTHESAICECONSTITUTION Sivili Enjeneereng = Sesotho Published by SAICE Block 19, Thornhill Office Park, Bekker Street, Vorna Valley, Midrand Private Bag X200, Halfway House, 1685 Tel +27 11 805 5947/8 | Fax +27 11 805 5971 http://www.saice.org.za | civilinfo@saice.org.za Editor Danielle Petterson danielle@saice.org.za Tel +27 11 805 5947 | Cell +27 83 226 5614 Editorial Panel MarcovanDijk (chairman), IrvinLuker (vice‑chairman), MarianneVanderschuren (president),AndileGqaji, JeffreyMahachi,AviMenon,PriscaMhlongo, JonesMoloisane,BeateScharfetter, DaniellePetterson (editor),VerelenedeKoker (journaleditor), BarbaraSpence (advertising) Annual subscription rate R730.00 (VAT included) Advertising Barbara Spence, Avenue Advertising barbara@avenue.co.za Tel +27 11 463 7940 | Cell +27 82 881 3454 Design and reproduction Marketing Support Services, Ashlea Gardens, Pretoria The South African Institution of Civil Engineering accepts no responsibility for any statements made or opinions expressed in this publication, and all information is provided without prejudice. Consequently nobody connected with the publication of the magazine, in particular the proprietors, the publishers and the editors, will be liable for any loss or damage sustained by any reader as a result of his or her action upon any statement or opinion published in this magazine. ISSN 1021-2000 FROM THE PRESIDENT’S DESK Engineering excellence and commitment to civil engineering in SA �� 1 ON THE COVER Stefanutti Stocks Geotechnical thrives on technical challenges �� 4 QUIZ SAICE Know Your Sector Competition �� 6 LETTER FROM THE EDITOR Manila’s privatisation success story �� 7 SANRAL SAICE 2022 National Awards Sustaining the future of the civil engineering industry �� 8 Projects: Technical Excellence Category Sani Pass Phase 2 – Roadworks (km 13.6 to km 25.0) �� 12 RMB 8 Merchant Place �� 15 Construction of the Decommissioning Works for the Plettenberg Bay Landfill �� 18 Grade separated interchange at Karino �� 20 The Rehabilitation of 13.4 km of Trunk Road 31/2 from Ashton to Montagu through Cogmanskloof including the New Ashton Arch Bridge �� 22 Retreat Low Lift Sewer Pump Station and Refurbishment of Existing Bulk Outfall Gravity Sewer �� 24 Sky City (Watervalspruit) Mega Housing Development Node 3 & 4 �� 26 Stellenbosch Decanting Facility and Silvertrees Parking �� 28 The Realignment of National Route 2 Section 27 from Umhlali River Bridge (km 15.37 to km 15.98) and from Umvoti River Bridge (km 26.4 to km 27.14) �� 29 oN THE cOVER P4 Piling installations underway at the CTS Brochem Plant Extension where the geology required two drilling modes. The open hole auger drilling mode was used to punch through the thick, medium-hard rock hardpan ferricrete layer, after which continuous flight auger piling was used to deal with the side wall collapse and water

Civil Engineering November 2022 | Vol 30 No 10