R/€ = 14.94Change: 0.05
R/$ = 14.04Change: 0.05
Au 1075.40 $/ozChange: -0.66
Pt 842.50 $/ozChange: 0.00
Note: Search is limited to the most recent 250 articles. Set date range to access earlier articles.
Where? With... When?

And must exclude these words...
Close Main Search
Close Main Login
My Profile News Alerts Newsletters Logout Close Main Profile
Agriculture   Automotive   Chemicals   Competition Policy   Construction   Defence   Economy   Electricity   Energy   Environment   ICT   Metals   Mining   Science and Technology   Services   Trade   Transport & Logistics   Water  
What's On Press Office Tenders Suppliers Directory Research Jobs Announcements Letters About Us
RSS Feed
Article   Comments   Other News   Research   Magazine  
Aug 10, 2012

Climatic understanding key to informing green design

Construction|Pretoria|Africa|Building|Design|Environment|Industrial|Projects|Resources|Solar|Systems|Water|Africa|South Africa|Energy|Energy Efficient Buildings|Green Building|Green-building|Products|Rainwater Harvesting Systems|Simulation Software|Systems|Dirk Conradie|Insulation|Radiation|Simulation
Construction||Africa|Building|Design|Environment|Industrial|Projects|Resources|Solar|Systems|Water|Africa||Energy|Green Building|Green-building|Products|Systems||Insulation|
© Reuse this

A thorough understanding of domestic climatic conditions and a detailed set of quantified climatic data are essential prerequisites for the development of suitable passive design strategies in construction and the subsequent performance analysis.

Council for Scientific and Industrial Research (CSIR) built environment senior researcher Dr Dirk Conradie asserts that wide-scale research on local weather patterns has confirmed that South Africa’s position as a water-stressed region will worsen in the near future, and will dictate the need for water- saving techniques to be included in contemporary building design.

“Climate-change patterns suggest that water will become far scarcer, and the result is that designers will have to seriously consider the incorporation of rainwater harvesting systems and the use of permeable surfaces in reducing runoff and ensuring that underground sources are replenished,” he maintains.

In the CSIR’s Green Building Handbook, Conradie states that sun protection measures should also be considered in areas such as Pretoria, which have high-quality sunshine and solar radiation as well as a mild climate.

These conditions present opportunities for the exploitation of the sun in the design of energy efficient buildings using a combination of accumulated knowledge and modern simulation software.

“Architects are aware of sun protection measures, but in many cases are informed by fashion rather than reason, which is often observed in their infatuation with the overglazing of windows. This could lead to both overheating in summer and under-cooling in winter,” Conradie explains.

He adds that designers can go much further by incorporating thermal mass, insulation, ventilation and solar penetration considerations into the design phase of building projects.

Advanced software products make it far easier to qualify and quantify the effect of a particular building design prior to construction and Conradie advocates that this may lead to a far greater understanding of the basic principles of environmentally conscious, energy efficient architecture.

One such method is the use of a bioclimatic chart to define potential building designs that employ natural energy resources and minimise conventional energy use.

While South African building legislation SANS 204-2 does currently recognise six major climatic regions in the country, in an attempt to introduce a quantified view of climate into the national building standards, Conradie warns that this is a coarse oversimplification of existing conditions.

“If this classification is compared with more detailed research work, it becomes clear that a greater degree of refinement is required to support designs within the built environment,” he claims.

The standard provides solar exposure factors as well as coefficients of various overhang and height factors for each of the six identified climatic zones. It is used most often for initial calculations, but should be quantified with more detailed calculations using simulation software.

He warns that indications point to a substantial degree of climate change in South Africa, which will have a profound impact on both the existing built environment and the manner in which future buildings will be designed.

Edited by: Martin Zhuwakinyu
Creamer Media Senior Deputy Editor
© Reuse this Comment Guidelines (150 word limit)
Other Green Building News
Local construction company Aveng Grinaker-LTA took top honours at the Construction World Magazine’s yearly Best Projects Awards ceremony, in Johannesburg, earlier this month. The company’s 300 m Majuba incremental launch bridge project, over the Vaal river, was...
While initially targeting sustainability and energy efficiency in new constructs, the Green Building Council of South Africa (GBCSA) says it is now observing an accelerated uptake in the retrofitment of existing buildings, with energy efficiency and sustainability...
Hotel Verde
Awards for South Africa’s top-rated Green Star SA buildings, as well as for the country’s top-rated building professionals who have contributed to green building in South Africa, have been announced at the Green Star SA Leadership Awards 2015. The awards were...
Latest News
Maurice Radebe
Updated 7 hours ago Imported liquefied natural gas (LNG) is expected to initiate the greater use of gas in South Africa’s currently coal-dominated electricity generation. Anticipated is the establishment of infrastructure at South African ports, such as Saldanha Bay, Coega or Richards...
Updated 7 hours ago As South Africa battles water restrictions precipitated by the El Niño phenomenon, aged infrastructure, above-average temperatures, below-average rainfall and climate change, industry stakeholders have called for a collaborative water stewardship approach that will...
Recent Research Reports
Water 2015: A review of South Africa's water sector (PDF Report)
Creamer Media’s Water 2015 Report considers the aforementioned issues, not only in the South African context but also in the African and global context in terms of supply and demand, water stress and insecurity, and access to water and sanitation, besides others.
Input Sector Review: Pumps 2015 (PDF Report)
Creamer Media’s 2015 Input Sector Review on Pumps provides an overview of South Africa’s pumps industry with particular focus on pump manufacture and supply, aftermarket services, marketing strategies, local and export demand, imports, sector support, investment...
Liquid Fuels 2015: A review of South Africa's liquid fuels sector (PDF Report)
Creamer Media’s Liquid Fuels 2015 Report examines these issues in the context of South Africa’s business environment; oil and gas exploration; fuel pricing; the development of the country’s biofuels industry; the logistics of transporting liquid fuels; and...
Road and Rail 2015: A review of South Africa's road and rail sectors (PDF Report)
Creamer Media’s Road and Rail 2015 report examines South Africa’s road and rail transport system, with particular focus on the size and state of the country’s road and rail infrastructure and network, the funding and maintenance of these respective networks, and...
Defence 2015: A review of South Africa's defence sector (PDF Report)
Creamer Media’s Coal 2015 report examines South Africa’s coal industry with regards to the business environment, the key participants in the sector, local demand, export sales and coal logistics, projects being undertaken by the large and smaller participants in the...
Real Economy Year Book 2015 (PDF Report)
There are very few beacons of hope on South Africa’s economic horizon. Economic growth is weak, unemployment is rising, electricity supply is insufficient to meet demand and/or spur growth, with poor prospects for many of the commodities mined and exported. However,...
This Week's Magazine
Additive manufacturing, better known as 3D printing, has the potential to completely change the relationships between individual consumers, professional designers and manufacturers. So argued Loughborough University Reader in Computer Aided Product Design Dr Ian...
Airbus Defence and Space: Military Aircraft has highlighted that its A330 Multirole Tanker Transport (MRTT) has significant commonalities with the Airbus A330-200 commercial airliner, upon which it is based. The South African Air Force (SAAF) once operated a fleet of...
Financial services provider Nedbank launched the second edition of its Carbon Footprinting Guide earlier this month, which is aimed at demystifying carbon footprint approaches and help readers grasp the main concepts of carbon measuring, monitoring, reporting and...
This year marks the thirtieth anniversary of Caterpillar’s first backhoe loader. This also coincides with the worldwide release of its latest-generation F2 series backhoe loader, which was launched at supply chain services company Barloworld Logistics’ Big Dig Day in...
BARRY DWOLATZKY The CPD programme provides advanced skills required locally, and provides a stepping stone to Wits University’s Master of Engineering degree in software engineering
A shortage of software engineers is leading to fewer information technology (IT) projects in private and public sector organisations. This also places a dampener on the economy, as IT is an integral part of business and civil service, says University of Witwatersrand...
Alert Close
Embed Code Close
Research Reports Close
Research Reports are a product of the
Research Channel Africa. Reports can be bought individually or you can gain full access to all reports as part of a Research Channel Africa subscription.
Find Out More Buy Report
Engineering News
Completely Re-Engineered
Experience it now. Click here
*website to launch in a few weeks
Subscribe Now for $96 Close
Subscribe Now for $96