The notions of sustainable design and energy efficiency first entered global consciousness following the energy shortages of the 1970s and 1980s. Influenced by ideas of energy independence, many designers in Europe and North America sought ideas and strategies that could help create energy-efficient buildings and cities. As they searched for design solutions, some researched the environmentally responsive elements of traditional architecture, while others developed new solutions that employ modern technologies and high performance materials.
As the energy crisis subsided, the building industry in North America returned to business as usual, allowing its European counterpart – which emphasized technological solutions – to take a lead. But with the revival of global interest in sustainability – this time driven by both environmental and energy concerns – the dormant dialogue between the two approaches to sustainable design returned to play a role in shaping the global sustainability agenda. Oscillating between advocates of passive design and proponents of technological solutions, this dialogue continues to enrich the discourse on the future of sustainable design and development
National Commercial Bank in Jeddah (left). consists of a triangular 27-storey office tower juxtaposed with a six-storey, 400-car circular garage. The verticality of the bank tower is interrupted by three triangular courtyards ‘chiseled’ into the building's facade. The office windows are oriented towards these courtyards with an inward orientation typical of Islamic traditional design. This provides the interiors with daylight but prevents them from overheating. Copyrights: Wolgfang Hoyt/Esto. Shaded pathways within Masdar Institute for Science and Technology (right) Copyrights: Nigel Young
Continue reading A Review of Sustainable Design in the Middle East
Wissam Yassine and Karim Elgendy
During the 1990s and the early 2000s, the UAE, and the city of Dubai in particular, witnessed a rapid rate of growth in its built environment driven by a real estate bubble. In the span of a few years the city’s unprecedented rate of growth, which was driven by both demand and speculation, completely transformed the city. But such growth came at a price. Driven by their need for quick returns, developers cared little beyond delivering a building on time and on schedule. Speed of construction often came at the expense of quality, and issues of performance and energy use played almost no role in the design and construction processes. Common disregard of performance was also fueled by the fact that most buildings were commissioned for developers – rather than owner/occupier clients – since their focus lied solely on reducing initial capital expenditures without considering operating costs that are typically borne by tenants.
Figure 1. Photo of the Masdar Institute Courtyard showing the wind tower, and the layered facades of residential units. Copyrights: Nigel Young/ Foster+Partners
These commercial forces, coupled with relatively cheap electricity across the UAE, and a lack of demanding building regulations have paved the way to the development of unsustainable design practices over the last decade. A typical office building in the UAE today is a predominantly glazed high rise tower. Basic design decisions such as orientation, massing, and envelope design are usually made without much regard to their impacts on the buildings’ energy performance, and passive cooling strategies are rarely considered.
Continue reading Passive Cooling: Responding to Electricity Demand in the UAE
UPDATED – The King Abdullah University of Science and Technology (KAUST) at Thuwal (near Jeddah) in Saudi Arabia was recently announced as one of the winners of the American Institute of Architects’ Top 10 Green Buildings awards for 2010.
The new international graduate-level research university was established by the government-owned Aramco, the world’s largest energy corporation, to drive innovation in science and technology and to support world-class research in areas such as energy and the environment. The campus project was designed by HOK Architects and was completed in September 2009.
KAUST’s new campus is Saudi Arabia’s first LEED certified project earning a Platinum certification, the highest rating in the United States’ green building rating system At 496,000 Square meters, the project also represents the world’s largest LEED Platinum project.
Image 1. Night view. Copyrights J. Picoulet and HOK
Continue reading KAUST: A Sustainable Campus in Saudi Arabia
Image 1. A night view of the design showing the shading envelope and the spiraling forms behind. Copyrights: Perkins+Will
In February 2010, the design for Al-Birr Foundation Headquarters in Riyadh, Saudi Arabia, has been named as the winner of the 2010 Architectural Review / MIPIM Future Projects Awards under the ‘tall buildings’ category (Image 1). The unbuilt project, designed by Perkins+Will’s New York Office, was commissioned for Al-Birr Foundation, a non-profit organization aimed at alleviating poverty and caring for disadvantaged families and children.
Of the many features of the design of the 59, 000 sqm tower, perhaps the most interesting is how it was concieved as a sustainable urban tower that responds to the environmental characteristics and the microclimate of the city of Riyadh, which is a challenging climate to address given the extreme solar exposure and the heat conditions of Riyadh.
Faced with these climatic conditions and a deep plot of 1000 x 1200m, the projects’s designers response was to rethink the high rise typology in this context. The design’s most visible response to the climate is the building’s envelope which was designed as a large rectangular frame of brise-soleil enclosing the occupied parts of the building. This shading frame was designed to respond to both the different amounts of solar radiation received by each elevation as well as the interior spaces behind it. To achieve this result, a mapped shading mesh was devised to provide varying levels of openness for different locations of the different elevations depending on its solar exposure and its spatial/contextual influences. The result was an envelope that resembles a mesh of varying densities surrounding the building and simultaneously protecting and revealing the activities behind it.
This proposed design solution thus helps the building reduce its solar heat gain while maintaining its views towards the city (FIgure 1). In addition to this shading effect, the mesh-like dynamic treatment of the envelope has also helped animate the building’s expression with the dense and sparse zones of the facade adding a dynamic effect to what otherwise may have become a static pure form.
Continue reading Riyadh Tower Design adapts a Traditional Middle Eastern Shading Strategy