Engineers faced a variety of challenges on a new bridge over the N 1 at Centurion, but the foundations required special care Stringent constraints on the new John Vorster Drive interchange bridge in Centurion with respect to aesthetics, traffic flow and difficult founding conditions presented the design team with formidable challenges. The project received a Pretoria Branch Award for Excellence in Civil Engineering and was nominated for last year's SAICE National Award. Completed in January 1998, the bridge had to be constructed without disruption to the exceptionally high volume of traffic that passes beneath its portals on the N 1 to Pieters burg. Moreover, the structure had to conform aesthetically with the existing adjacent' bridge, presenting the design team with fixed concepts in terms of the type of bridge, span lengths, abutment and pier configuration and alignment. Matters were further complicated by the soil conditions being among the worst for founding in dolomitic areas encountered by the geotechnical specialists involved.
A project in Eastern Gauteng has brought upliftment to previously disadvantaged communities in the form of infrastructure, job opportunities and training and skills A project aimed at community empowerment through the provision and maintenance of infrastructure in Eastern Gauteng was initiated in 1995/96 by the Eastern Gauteng Services Council (EGSC) and implemented in close operation with all the transitional local councils in their area of jurisdiction. The project, which received an Award for Civil Engineering Excellence from SAICE's Witwatersrand Branch and was nominated for the community-based category of the National Award in 1997, had two broad areas of focus: To create and establish an enabling contracting environment for small, medium and micro enterprises (SMMEs) in the Eastern Gauteng area To institute an Emerging Contractor Development Programme (ECDP), which would include the following features: identification and selection of emerging contractors (ECs), the provision of accredited management training courses, the transfer of technical skills on a pilot project, the transfer of management and contracting skills on follow-up projects and the management of the programme
GPS is now widely used by civil engineers for surveying, setting out and monitoring, but it still requires a basic grounding in geometric geodesy The global positioning system (GPS) is a navigation and positioning system operated by the US military from Falcon Air Force Base near Denver, Colorado. It currently consists of 25 satellites that are tracked continuously, their predicted positions being transmitted on a radio signal with additional measuring codes to GPS user receivers on or near to the earth's surface. At any time, at least four of these satellites should be 'visible' above the observer's horizon.