Sasol Mining is developing the new Shondoni Mine near Kinross on the Mpumalanga Highveld. During the design process for surface infrastructure, buffer storage was considered. Bunkers were decided on, one at the mine and one at the end of the delivery conveyor near the final destination at the Sasol Secunda Plant. During the construction of the Sasol Tubelisha Mine recently, a conventional cast in-situ reinforced concrete bunker was constructed. As part of the Shondoni design process the development and design team considered calling for the construction of the bunkers using a precast construction technique.
The Engineering Council of South Africa (ECSA) recently held a roadshow detailing the new registration process. Low levels of registration amongst civil engineers, particularly those not working for professional practices, has been an ongoing concern for ECSA. The construction industry, under the leadership of the South African Forum of Civil Engineering Contractors (SAFCEC) and the South African Institution of Civil Engineering (SAICE) through its Project Management and Construction Division (PMCD), are proactively supporting the registration process.SAFCEC represents more than 500 contractors and associated members, and as an employer body represents the interests of many employers who employ civil engineers actively working for construction companies. The SAICE PMCD, one of the larger technical divisions of the Institution, actively supports SAICE members involved in the world of project management and construction.
One of SAICE's largest divisions, the Project Management and Construction Division (PMCD), has a newly established committee to serve its more than 1 400 members countrywide. Debbie Besseling spoke to chairman Giuseppe De Simone.
Critical success factors (CSFs) have been defined as characteristics, conditions or variables that can have a significant impact on the success of a project when properly sustained, maintained or managed. Different studies have identified different CSFs, and a lack of consensus of opinion among researchers on the criteria for judging project success and the factors which influence that success has been cited as a problem. It has in fact been suggested that there is no such thing as absolute success in a project, only perceived success. Architects, for example, usually place emphasis on the aesthetic aspects of a building, while engineers usually focus on the structural aspects.
Part of the corporate responsibility of the South African National Roads Agency Limited (SANRAL) is to partner with other organs of state, thereby moving South Africa forward through the provision of road infrastructure. The uMuziwabantu Local Municipality (in Harding) falls under the Ugu District Municipality and is located adjacent to the N2 along the south coast of KwaZulu-Natal. Recently completed within the boundaries of the uMuziwabantu Local Municipality is a roads project resulting from a partnership between the KwaZulu-Natal Department of Transport (KZN DoT) and the uMuziwabantu Local Municipality. The project entailed the upgrade of a gravel road to an all-weather surfaced road, and included the construction of culverts on two stream flows which divide the community, and which generally left the road impassable in rainy conditions.
IT IS PROBABLY SAFE to say that the vast majority of structural engineers in South Africa are very far from clear about what clause 8.7 in the design code for hot-rolled steel structures, SANS 10162-1, means, what it tries to achieve, and how it should be implemented. The purpose of this article is to shine a light on this set of issues.
The motivation to build tall has changed over time, as has the definition of 'tall', the materials we use and the designs that are possible. The passion, obsession and necessity of building super-tall and mega-tall structures continue to challenge engineers and architects to reach new heights. This article discusses the key historical developments, technological advances, current trends and engineering considerations of high-rise buildings.
Plate load tests have been used extensively in the past to determine the bearing capacity and the stiffness of soil. Most geo-technical problems are governed by allowable settlement requirements.Therefore geo-technical professionals are continuously searching for improved test methods and new techniques to determine soil stiffness more accurately and cost-effectively.Two of the main advantages of plate load tests are the cost-effectiveness of the test and the relative straightforward test procedure. During conventional plate load tests the stiffness of the soil is determined by measuring the settlement of a plate placed on the soil surface. If the contact between the plate and the ground is not smooth, bedding errors may occur during the test, where plastic strain occurs at the contacts between the plate and the ground.
The Port of Durban is the busiest general cargo port in Africa, integral for ensuring that much needed resources can be imported and exported, in doing so keeping the wheels of the South African economy turning. As part of Transnet National Port Authorities' (TNPA) growth strategy, sections of the port have been identified for reconstruction and deepening to ensure that the infrastructure will be both serviceable for the next 50 years and will cater for the newer generations of vessels which call at the port. The Maydon Wharf precinct consists of 14 berths in total, seven of which are steel sheet-piled structures constructed between the 1960s and 1970s.Following an extensive assessment of the quay wall conditions it was identified that Berth 12 was in a critical state of failure, with the remaining six berths in a similar condition. Maydon Wharf Berth 12 was successfully reconstructed by Stefanutti Stocks in 2012, with there maining six berths (1-4, 13 and 14) being put out for tender in late 2013.
Bergstan South Africa was appointed by the City of Cape Town, Transport for Cape Town (TCT) Branch, to design and implement upgrades to the Lotus Canal. These bulk upgrades form the final construction phase that would complete the requirements of the Lotus Canal storm-water master-plan. The Lotus Canal is a storm-water carrier that was constructed during the middle of last century to convey increased post-war development runoff. The canal originates in the Cape Town Airport Industria area and flows south through Gugulethu, Ottery,Grassy Park and the Zeekoevlei wetland before discharging into False Bay. The 14 km2 catchment shown in Figure 1 is the main storm-water contributor to the study area. The grades of the catchment are typically low and as a result the catchment is susceptible to flooding. The aim of the project was to design and implement a storm-water conveyance and temporal storage solution that would meet the requirements of the 50-year fully developed flow scenario for this study area and reduce the flood risk up- and downstream. The hydraulic study focused on the stretch of canal between Duinefontein Road and Vygekraal Road along with the two bodies of water south of Govan Mbeki Road and Jakes Gerwel Drive. The designers were cognisant of the environmental sensitivity of the areas due to the sites being located either side of the Edith Stevens Nature and Wetland Reserve. The 7 ha site south of Jakes Gerwel Drive had good potential to complement and contribute to the existing wetland environment, and therefore a softer engineering approach would be implemented with the aim of reintroducing wetland habitat into the area.
The winners of the prestigious Fulton Awards, which are made every two years by the Concrete Society of Southern Africa(CSSA) to recognise innovation and design excellence in the use of concrete, were announced recently at a gala dinner at the Champagne Sports Resort in the Drakensberg. This article summarises the winners per category, and we hope our readers will enjoy recognising the particular projects they've been involved in.
This article is the sixth in a series on the economic pricing of services and the beneficial effect this could have on the economy and the everyday lives of people. The first five articles appeared in the October and November 2014, and the March, April and June 2015 editions of Civil Engineering.
This article first appeared in the September 2013 newsletter of the World Federation of Engineering Organisations (WFEO) Committee on Engineering and the Environment (www.wfeo.net/environment) and is being republished here with permission.
ON 7 MAY THIS YEAR Trueman Goba, SAICE's 2002 president and currently chairman of Hatch Goba, received the Mc-Master University Faculty of Engineering Leadership Award at its annual Applause and Accolades Awards Gala in Hamilton, Ontario, in Canada.