The entrance channel of the Port of Durban is at present being widened and deepened to provide access for vessels up to an equivalent size of a 9 200 TEU container ship within internationally accepted navigational safety and channel availability norms. On completion, the Port of Durban - and South Africa - will occupy a favourable position on the north-south global trade route and will help to grow local and regional economies into the future.
In this article, the author attempts to describe the wear mechanism in the interface between the wheel flanges running against the side of the rail crown when a railway wagon rounds a curve in a railway line. The cost of aggressive wear in the rail-wheel interface is compared to the cost of lubrication of the railway track and methods of lubricating the rail-wheel interface are described briefly. The trajectory of points on the wheel flange against the side of the rail is described and the effect of aggressive wear between the surfaces shown. The results of measurements of rail temperatures in the wear interface are discussed, as well as the frequency of occurrence of hot wheels on the Richards Bay coal export line
A new intelligent rail stress monitoring system has been developed by Transnet Freight Rail (Technology Management). The system uses strain gauges to measure longitudinal rail forces as well as rail temperature. The system is used to manage CWR, but can also predict rail breaks and buckling, functions as a maintenance tool and can do predictions based on historical measurements and weather forecasts, thereby reducing train delays and derailments. The system comprises a valuable contribution to the high-tech world of heavy haul.
This article uses hypothetical examples to illustrate how the maintenance strategy can be optimised, measured over the life of the track. The examples are supported by relatively new research results by Professor Peter Veit from the Technical University of Graz in Austria, in his paper 'Outsourcing in track maintenance' as read at the OVG conference in September 2004
Infraset, which won the contract to supply both track and turnout sleepers against stiff international competition, is supplying a total of 190 000 sleepers manufactured to the Bombela Consortium's requirements. In addition to the 1 in 9 turnout and B70 sleepers already supplied, they will include 1 in 12 and 1 in 18,5 turnout sleepers.
Excavation of the single-track rail tunnel towards Emergency Shaft 2 in Houghton has reached approximately 310 m from the tunnel portal. Construction of the underground station box and multi-storey parkade foundation is making good progress.
The custom-designed mixed face earth pressure balance shield TBM is designed to cope with the challenging geology south of Rosebank. The tunnel borer is encountering complex conditions with a high water table passing through differing ground consisting of differing degrees of hard rock, sand and soft soil.
The Gansbaai development set along the tranquil landscape of the Atlantic Coast offers breathtaking views in an unspoilt setting. This exclusive development is situated 22 km south of the beautiful resort town of Hermanus in the Western Cape.
Transnet Port Terminals' Richards Bay multipurpose terminal team received a welcome injection into its crane fleet with the arrival of components of a brand new R38 million Liebherr LHM500 mobile harbour crane on board the Beluga Projects vessel earlier this month.
Specialist Civil and geotechnical engineering contractor Esor Limited has played a key role in regeneration projects in the Johannesburg CBD, most recently for the new Absa mega office complex, the Universal Church of the Kingdom of God and a property development for Zurich Insurance Company (formerly SA Eagle).
He has been labelled idiosyncratic, demanding, impatient, at times downright bloody-minded - exacting qualities that spring from an imaginative and inquisitive mind tirelessly searching for practical solutions to engineering problems. But he is also known as a thorough gentleman, courteous and fair, a friend and confidante who takes time to listen and who cares deeply about humankind. Throughout Dr Ross Parry-Davies' life, his muse has been his wife, Renée, who has shared his every success and setback. Lorraine Fourie met the couple at their home in Hout Bay in the Cape, where, on observing their energetic lifestyle, one hesitates to say that they live in retirement.
Tests conducted by the University of Pretoria's Civil Engineering Department reveal that the crushing strength of cellulose fibre reinforced cement (FRC) as a gravity piping material fails to meet several requirements laid down by SANS 819:2001 (Edition 3.2) for this type of gravity conduit.
Since earliest times, humans have felt the need to gather around a focal point to relax, negotiate and entertain each other, and since earliest days this has been made possible by seating arenas or amphitheatres. Today, these structures are still very popular, except that the method of construction has become easier and building material more varied and versatile.
Region looks towards Zimbabwe's power plants
Head office campus for department of Foreign Affairs
Important trends in qualifications awarded to women and black learners
Government should be More proactive in doing background Screening on employees
Annual IMESA conference call for papers
Nigeria : the desert is fast encroaching, but why?
Ecological coastal city in China evokes the Dutch Wadden Sea
Balancing graduate oversupply and the SA skills shortage
Liviero shows its Mettle on the Gautrain
Solar-powered automatic lawnmower!
Upgrading of Sandkraal Road, George