Strategic design guidance on tall buildings in the Arab region

Globally, there has been enhanced media -and public interest in tall buildings following the terrorist attacks on the World Trade Centre in New York. In the Arab region, tall buildings have also become an important topic of debate. The Middle East is set to grow significantly over the next two decades. Soaring population and jobs growth will increase demands for the better use of residential and commercial office space. This is a vital issue for the growth in the economy of the region. The number of construction sites for tall buildings in the Arab world is staggering when compared to European developments. A statistical review of tall buildings has shown for example that the United Arab Emirates (UAE) by the year 2010 will outnumber UK and Germany together in the number of 30+ floors buildings by reaching (446 UAE) compared to [243 UK(130) + Germany(113)]. Today high buildings are considered flagship developments not only in the Arab World but also worldwide that play an important part in regeneration. Tall buildings are likely to continue to be relevant to the master planning of areas with good public transport access and capacity. A successful tall building must adhere to a set of clear urban design guidelines that affect the following areas: edges, use, public space, urban integration and environmental factors. This paper addresses this issue. The challenge for architects, urban designers, and planners in the Arab world is to provide the right type and quality of new space and new place that won't undermine the question of identity. The paper explores the nature of tall buildings in the Arab region and provides examples of the positive and negative transformation of the urban environments in a number of locales. The paper concludes by drawing some guidelines for future development of tall buildings in the Arab World.

Energy-efficient tall buildings design strategies: a holistic approach

The number of tall buildings is increasing as a result of the advances in construction technologies and the rising land prices. These buildings are characterised by their high energy consumption compared to other building types as they rely intensively on mechanical HVAC systems due to the extreme weather conditions associated with the increase in height. However, they present a great opportunity for energy savings. In recent years, it has been noticed the increasing interest in geometry and form of tall buildings, as a result of the evolution of parametric modelling and 3D visualisation tools, on the expense of the environmental aspect. This paper discusses factors affecting the energy consumption in the tall buildings. Through an extensive analysis of Literature, active and passive energy efficient strategies adopted in tall building at various building stages are identified. In addition, the role of architectural design parameters, such as building form, orientation and envelope on the tall building energy performance are highlighted. Finally, a set of guidelines and environmental design strategies to be considered in different phases in order to achieve energy-efficient tall buildings are proposed. These strategies have been categorised into four stages namely early design, conceptualisation, and documentation and operational. A 3D modelling approach was used to visualise and illustrate the proposed strategies in different stages.