Extracted from text ... AFTER THE TREMENDOUS SUCCESS of the Rand Water-SAICE
Centenary Schools Water Competition in the past two years,
Rand Water will once again provide the main sponsorship this
year. The 2005 competition is up and running and we trust that
SAICE's branches will once again come to the party 'big time!'
Over the past two years many SAICE branches really went to
a lot of trouble to get the schools in their region involved in
this worthwhile project. It also afforded them the opportunity
to speak to the learners about civil engineering and the role
it plays in infrastructure creation ..
Extracted from text ... SIVIELE INGENIEURSWESE ? JUNIE 2005
Focus on Stemele
THE B&A Group's water and waste water and effluent treatment divisions, under Stemele Bosch Africa (SBA), offer multidisciplinary consulting engineering services throughout sub-Saharan Africa. Munitech, another B&A Group company, specialises in operations and maintenance services in the same fields. Specialist consulting services include investigations, planning and feasibility studies, design, procurement, contract administration, construction monitoring and project management.
SBA's water division covers urban and rural water distribution, water treatment, river abstraction, dams, water services development plans and water resource studies, hydrology and flood control, as well as irrigation. The wastewater and effluent treatment ..
Extracted from text ... The raising of the Flag Boshielo
Dam in the Olifants River
that is currently under way
on the border of Limpopo and
Mpumalanga provinces is one
element of an integrated water
resource development process
being coordinated by the
Department of Water Affairs
and Forestry (DWAF) within
the Olifants River catchment
MINING AND AGRICULTURAL
Raising the supply level of the dam is
motivated primarily by the water needs of
existing and future mining developments in
the region. These mining activities already
contribute to the economic development
of the region, employ local labour, earn
foreign exchange and result in substantial
tax revenue. ..
Extracted from text ... The guideline provides for the following grading of riprap:
0, 5W0 to 2W0 = 100 kg to 400 kg boulders with a protection thickness of
1, 5D50 to 1, 8D50 = 0, 75 m to 0, 9 m thick protection
Step 3 - Substituting riprap with woven wire mattresses and geotextile bags
Tests undertaken at the Hydraulics Laboratory, Engineering Research Center, Colorado State University of Fort Collins, showed that gabion mattresses were able to perform the same function as a layer of loose riprap two to three times thicker and that the same performance could be ..
Extracted from text ... SIVIELE INGENIEURSWESE ? JUNIE 2005 32
Text Hennie Kotze and Alex van Niekerk Senior project managersSA National Roads Agency LtdNorthern Region
Innovative engineering solutions
WORLDWIDE, funding to improve, expand and maintain roads generally does not meet the demand. South Africa is no different.
To manage this situation, different approaches can be followed. A standards-driven approach implies that if one cannot achieve the required standard, nothing should be done. Another approach is to waive standards and do what is affordable. The first approach compromises the needs of the road user, whereas the second approach may seriously compromise ..
Galaxy reservoirs reducing costs of service delivery
<br>Ensuring that geomembranes are up to scratch
<br>Simple yet effective underground pipe and manhole sealing system
<br>Major conferences at Afriwater 2005
<br>Water treatment chemicals
<br>New CMA president
<br>CMA updates cavity walls detailing manual
<br>SA, Zim and Botswana formulate joint research plans
<br>Textbook fills vital tertiary need
Extracted from text ... SIVIELE INGENIEURSWESE ? JUNIE 2005 44
Event Date Deadline for sub-
mission of papers
Technical Report Writing 4-5 July
Authorization: A Strategy
1-14 July 2005 Midrand Lungelwa Lamani*
Assertiveness and Confl ict
Resolution for Managers
2-3 August 2005 Midrand Lungelwa Lamani*
Handling Projects in a
4-5 August 2005 SAICE National Offi ce
(New Building), Midrand
Management and Planning
15-18 August 2005 Centurion
Afternoon Lecture Course
3-31 August 2005
7-28 September 2005
SAICE National Offi ce
This paper descriptionbes the development, design and construction of the underground skating rink structure of Sterland, Pretoria. The structure consists of a series of radially placed portal frames which is built in reinforced- and prestressed concrete. The structure serves as roof to the skating rink which is thirty feet below ground level. The structure also carries on top of it a two- and three storey building which is part of the rest of the building complex. The construction procedure of the structure was unorthodox as the whole structure, as well as the building which is standing on it, were initially built on the surface of the ground and later lifted off the ground by post-tensioning the structure. Only after the completion of the stressing operations was the excavation for the skating rink underneath started and completed.
The results of three different digital computer methods of analysing elastic plates in bending, namely the finite difference, finite element and equivalent grillage methods, are compared with test results for a steel plate which was centrally loaded and simply supported at four internal points. The finite difference and finite element procedures are found to give very similar results, although the finite element method might be preferred in cases with more complex boundary and support conditions. Subject to certain conditions, the equivalent grillage method is found to give excellent predictions of plate deflections and reasonable distributions of bending and twisting moments per unit width.