In this project, which began initially with a contract to rehabilitate some old bitumen penetration macadam service roads at the Baragwanath Hospital complex, innovative empowerment-friendly technologies were developed for application in urban community participative road construction. Macadam-type pavements, which have a history of durability and quality, were analysed, re-engineered and modernised. Composite macadam-type pavements evolved that are cost-effective, utilise small plant and are suitable for SMME contractors. In addition to the technological development, this technique also facilitates social and economic change and can act as a development and community empowerment mechanism.
Department of Water Affairs and Forestry has gone further than it is duty-bound to do in preventing water pollution from old mine dumps in KwaZulu-Natal The Bob Laburn Award is made annually by SAICE's Environmental Engineering Division in recognition of appropriate consideration of the environment in projects of a civil engineering nature. It is intended to encourage individuals to take personal responsibility for championing the cause and in so doing to develop an enduring culture of environmental concern.
An innovative new engineering design methodology enables hydraulic erosion to be quantified, significantly improving the quality and cost-efficiency of any project in which erosion is a factor in the course of a four-year project for the South African Water Research Commission (WRC) on the reinforcing effect of plant roots, consulting engineers SRK have developed an innovative engineering design methodology that enables hydraulic erosion to be quantified. This enables the quality and cost-efficiency of any project in which erosion is a factor to be significantly improved.
Consulting engineers SRK have been involved in the geotechnical studies for a proposed export processing zone near Hai-Phong on the east coast of Vietnam. The envisaged developments will involve, among other things, reclaiming 5 km2 of paddy fields and fish ponds with roughly 10 million m3 of dredged fill placed to a height of about 3 m. Settlements of the underlying alluvial deposits, up to 45 m deep, are a potential problem. This is aggravated if settlement times are excessive, as the development time must be short for the project to be economically viable.
In 1986 the then Barclays National Bank (to become First National Bank after Barclays withdrew from South Africa) turned its mind to the future and banking's growing electronic needs. After thorough investigation the Bank decided to build new corporate headquarters, and a process was set in motion that started to bear fruit when Phase One of BankCity, their new complex in Johannesburg's Central Business District was completed in March 1992. The project, which has been descriptionbed as the largest commercial building project in the southern hemisphere, is transforming the western sector of the District.
Experience and evidence clearly demonstrate that engineers who engage in a continuous process of development are far more likely to remain at the front of their field than colleagues who do not. But sometimes even those who want to keep abreast are unable to do so in Hong Kong owing to a lack of opportunity. The Hong Kong Institution of Engineers recently launched a series of ambitious efforts, programmes and services designed to provide the opportunities for continuing professional development.
The infrastructure of any nation is the foundation for overall development. Investment in national infrastructure expresses the economic, social, political and cultural vision of a nation. It also reflects a view regarding regional and international trade and relations. Therefore, capital investment in transport infrastructure is an expression of a long-term view of socio-economic developmental objectives. Proper road infrastructure is thus essential to the economic well-being of a country. In order to develop this infrastructure, two possible avenues are available, namely general taxation or a 'user pays' levy.
This article discusses a newly developed method for determining the rideability of different types of urban roads The Durban Corporation is now able to formulate a realistic, user-oriented specification for the evenness of wearing course hot-mix asphalt. So says Peter Wallis, materials testing manager with the Corporation, who, with Eric Lathleiff, has more than a year's experience with the California-type profilograph. This is, indeed, a progressive step, as straight edge tests hardly discriminate between poor and acceptable quality of ride. 'From our work we have been able to draw up acceptable limits for rideability for different types of urban roads and also establish at what limit the ride becomes so objectionable that drivers complain: said Wallis. All this work has been carried out on asphalt surfaced roads.
GFJ consolidated and maintained its position as one of the leading consultants in the field of water treatment and water supply during 1996. Their award-winning projects reflect their activities in this challenging field.
Huisrivier Pass is west of Calitzdorp on the road to Ladysmith. Prior to its opening in 1897, traffic had to use the tortuous route via Caledon Kloof (or Verkeerdekloof) about 10 km to the south. After crossing the Gamka River, Huisrivier Pass climbs up a valley where the mountains to the north push against the mountains to the south, leaving very little room indeed for a road. The southern mountains are too indented and broken to encourage anyone to think of putting a road there, while the northern mountains have been inclined by folding in such a way that any bits of rock that break off or weather away find it natural to slide downhill onto the road.
Umgeni Water appointed consultants in October 1995 to undertake environmental and technical feasibility studies for the upgrading of the bulk water supply system for the north coast of KwaZulu-Natal The continual expansion of the north coast sub-region from Durban to Stanger has resulted in increased demands being placed on the existing bulk water supply to the growth points of Verulam, Umdloti, Tongaat and Ballito. In addition to this development, consumers who have, until recently, relied on local sources of water are now using the existing pipeline during peak periods. In April 1995 Umgeni Water's corporate planning department completed a planning overview of the north coast bulk water supply system. This study identified the most attractive means of supplying the long-term water demands of the consumers in the sub-region.