Civil Engineering August 2022

South African Institution of Civil Engineering Civil Engineering August 2022 August2022 Vol30No7 ON THE COVER Mukona Group is an accredited Level 1 B-BBEE South African-owned engineering company providing turnkey tailings and geotechnical engineering services to the mining, public and private sectors. August2022 Vol30No7 TheeraofsmarT, susTainable,and slickbuildings PPPsfor infrasTrucTure ProjecTs inafrica sa’sPlansfor asusTainable energyfuTure 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 Transport, the environment and gender inclusion �� 1 SAICE meets with SANRAL Board �� 2 LETTER TO THE EDITOR Beyond Day Zero �� 3 ON THE COVER Leading turnkey geotechnical solutions �� 6 QUIZ SAICE Know Your Sector Competition �� 8 ENVIRONMENTAL ENGINEERING NEMLA IV will tighten rectification processes �� 10 Land outlook study presents insights for SADC �� 12 Embracing the era of smart, sustainable, and slick buildings �� 14 World’s tallest building constructed with hempcrete �� 16 Quality ‘cascade’ can optimise water treatment on mines �� 18 Construction of the Nhlangano Wastewater Treatment Plant �� 20 INDUSTRY PERSPECTIVE Understanding the use of PPPs for infrastructure projects in Africa �� 24 B-BBEE not enough to measure infrastructure performance �� 27 oN THE cOVER P6 Mukona Group offers complete geotechnical turnkey solutions through its various divisions, ensuring the most suitable and cost-effective solutions

Civil Engineering August 2022 | Vol 30 No 7