In the local asphalt industry, and in particular amongst members of the Southern African Bitumen Association (SABITA), there are very few people who have not heard of the Warm Mix Asphalt (WMA) trials that are happening in Hammarsdale, eThekwini. This process started back in 2008 under the auspices of what became the Warm Mix Interest Group of South Africa and which comprises client bodies, consultants, asphalt manufacturers and contractors, technology suppliers, as well as other relevant and related parties. A lot has been written and published about the success of these trials, which are currently in the third stage of roll-out, following on the first trials at Brackenhill Road in November 2008 and the second at Leicester Road in June 2009.
Creativity and engineering are two words not generally seen together. Engineering is inherently conservative, for good reason. A civil engineer designing a bridge, or even a traffic signal plan, would risk causing death and destruction if the design were unconstrained by strict codes of practice.
In 2008 SANRAL launched the Gauteng Freeway Improvement Project (GFIP) which is a far-reaching upgrading programme for the province's major freeway networks in and around the Metropolitan Municipalities of Johannesburg, Ekurhuleni (East Rand) and Tshwane (Pretoria region). The project aims to provide a safe and reliable strategic road network and to optimise, among others, traffic flow and the movement of freight and road-based public transport.
This article focuses on current and potential developments in pavement engineering where the unique properties of nanomaterials can be used to improve the built environment. The original paper on which this article is based was chosen as Best Paper (Pavements) for 2009 by the SAICE Transportation Division.
Aurecon was responsible for the design, implementation, training, staffing, operation and maintenance of a solution that allowed the Nelson Mandela Bay Municipality (NMBM) to provide efficient public transport services and the rapid resolution of service requests across multiple municipal service sectors during 2010 FIFA World Cup events - the Nelson Mandela Bay Transport Operations Centre (TOC).
Pavement engineering has evolved over many years since the invention of the wheel to the point where it may be described as a fairly well developed but far from perfect technology. As with all other engineering disciplines, scientific knowledge has to be utilised to design a facility that will perform a certain required function.
Pavement Interactive, an online pavement community built on an open-source wiki platform, is a novel and possible approach to giving distance training to South African and southern African roads professionals in various aspects of road construction, maintenance and management.
Some authors define traffic congestion as a condition on road networks that occurs as use increases, and is characterised by slower speeds, longer trip times and increased queuing. When traffic demand is great enough that the interaction between vehicles slows the speed of the traffic stream, congestion occurs. As demand approaches the capacity of a road (or the intersections along the road), extreme traffic congestion sets in.
The economic growth and arrival of low-cost airlines in South Africa has led to a boom in air passenger travel. The OR Tambo International Airport in Johannesburg has seen increased passenger numbers of around 10% per annum. This, combined with FIFA's requirements for the 2010 World Cup, has sparked various investments. During the planning of the investments, a knowledge gap was identified. A research study by the University of Cape Town (UCT) has resulted in the development of a long-term sketch-planning tool that can assist in exploring future scenarios.
Transportation engineering is one of the four focus areas of the Department of Civil Engineering at the University of Pretoria (UP). Students are educated on both undergraduate and postgraduate level in the disciplines of transportation, pavement and railway engineering. Current research projects focus on different aspects of these three disciplines. About 100 undergraduate students graduate from the department annually, while around 20 students achieve the Honours degree in Transportation Engineering and Applied Sciences, and five students the Masters degree in Transportation Engineering and Applied Sciences annually.
The moment that many South Africans had been waiting for finally arrived when Gautrain commenced operations on its airport link for the first time on 8 June this year. These operations included the Sandton, Marlboro, Rhodesfield and OR Tambo International Airport Stations, as well as the corresponding feeder bus services.
This article, written by David Beer on behalf of the Concrete Manufacturers Association (CMA), deals with the steps taken to contain the latter to not more than 65 decibels using precast concrete sound-attenuation barriers, particularly where the rail link runs adjacent to, and in some instances very close to, noise-sensitive built-up environments.
This reviewer has to admit to a certain partiality to books written, as this one is, by enthusiasts rather than by researchers. And if they are about an aspect of the engineering history of the southwestern Cape - well, that's even better.