I-civili Enjeneering October 2006 Vol 14 No 10 I-civili Enjeneering October 2006 Vol 14 No 10 IsiXhosa ON THE COVER ON THE cover Downstream view of the crump gauging weir/fishway at Lake Mzingazi, Richards Bay, showing fish chutes and baffles. A fishway can be broadly described as any Fishway first of its kind in South Africa 4 natural or artificial device that enables fish to overcome obstructions in streams in their migratory or other movements (see article OPINION on page 4) Of attitudes, ethics, and education 3 WESTERN CAPE Phase 1 of the Potsdam Road Interchange on the N7 now under construction 22 New lease on life for strategic landfill 24 Innovative bearing replacement techniques for Black River Parkway viaduct 26 Prestigious mixed land use developments October 2006 Vol 14 No 10 in the Western Cape 28 PUBLISHED BY SAICE/SAISI Meeting Cape Town’s housing needs 29 Block 19, Thornhill Office Park, Bekker Street, Vorna Valley, Midrand Private Bag X200, Halfway House, 1685 Rehabilitation of Trunk Road 9 Section 1 3 Tel 011-805-5947/48, Fax 011-805-5971 http://www.civils.org.za
[email protected] EDITOR SoutHern CAPE Sarie Moolman Reconstruction of the road from George
[email protected] Tel 012-804-2754, Cell 082-376-2652 to the Outeniqua Pass 33 EDITORIAL PANEL Elsabé Kearsley (chair), Irvin Luker (vice-chair), Sam Amod (president), Wally Burdzik, Johan de Koker, Huibrecht Kop, Jeffrey Mahachi, Jones Moloisane, Eben URBAN AND RURAL TRANSPORTATION Rust, Marco van Dijk, Michelle Theron, Sarie Moolman (editor), Barbara Spence