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This PDF was downloaded from The Skyscraper Center on 2016/03/15 UTCFor the most up to date version, please visit http://skyscrapercenter.com

Bahrain World Trade Center 1

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Facts

Official Name Bahrain W orld Trade Ce nter 1

Name of Comp lex Bahra in World Trade Center

Other Names Bahrain Wo rld Trade Center Eas t Tower

Structure Type BuildingStatus Completed

Country Bahrain

City Manama

Street Address & Map King Faisal Highway

Building Function office

Structural Material steel/concrete

Construction Start 2004

Completion 2008

Official We bsite Bahrain W orld Trade Ce nter

Rankings

Global Ranking #381 Tallest in the World

Regional Ranking #70 Tallest in Middle East

National Ranking #4 Tallest in Bahrain

City Ranking #4 Tallest in Manama

Companies Involved

Architect

• Design Atkins

Structural Engineer

• Design AtkinsMain Contractor Murray & Roberts ; Rambøll København

Other Consultant

• Wind BMT Fluid Mechan ics Ltd.

About Bahrain World Trade Center 1

The Bahrain World Trade Center integrates large-scale wind turbines into its design; and together with numerous energy reducing andrecovery systems, t his development shows an unequivocal commitment to raising global awareness for sustainable design. This building ispioneering a new direction for designers and owners acting as a technological precedent. The BWTC has shown that commercialdevelopments can be created with a strong environmental agenda and addresses the needs of our future generations. The BWTCencapsulates the essence of a sustainable philosophy engaging all of the social, economic and environmental impacts of the project. As wellas making significant strides in environmentally balanced architec ture, t he building is now considered a source of nat ional pride for Bahrainresidents, and is attributed with generating economic prosperity within the capital of Manama.

The BWTC forms the focal point of a master plan to rejuvenate the 30-year-old existing hotel and shopping mall on the site. The planning of 

Height: Occupied

168.8 m / 554 ft 

Height: To Tip

240 m / 787 ft

Height:Architectural

240 m / 787 ft

 

Floors Above Ground

45

Floors Below Ground

1

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the site became constrained by the existing buildings and the road network around the site. By extending the main axis of the existingshopping mall towards the sea and creating a secondary axis from the Hotel, “Retail Streets” were established. The twin towers’ naturallocation was therefore positioned on the main axis, facing the Arabian Gulf and creating the entrance for the development.

The inspiration for the twin towers originated from regional “Wind Towers” and their ability to funnel wind, and the vast sails of thetraditional Arabian Dhow as they harness the breeze in driving them forward. After careful Computational Fluid Dynamics (CFD) modeling andextensive wind tunnel testing, the towers’ shape was literally carved out by the wind to create optimum airflow around the buildings. Theelliptical plan forms act as aerofoils (see plans on page 91), funneling the onshore breeze between them, creating a negative pressurebehind, thus accelerating wind velocity between the two towers. Vertically, the sculpting of the towers is also a function of airflowdynamics.

As they taper skywards, the aerofoil sections reduce. This effect, combined with the increasing onshore wind velocity at higher altitudescreates a near equal regime of wind speed on each of the three turbines, irrespective of height, allowing them to rotate at the same speed

and generate the same energy levels. The three 29-meter (95-foot)-diameter, 11 ton wind turbines are supported on 31.5-meter (103-foot), 70 ton bridges between the towers. Each turbine generates 225kW. The buildings have been sculpted to funnel the uninterrupted on-shore breeze onto the turbines and create a perpendicular slip stream that corrects the wind direction to take advantage of 70% of Bahrain’s wind energy.

The premium on this project for including the wind turbines was less than 3% of project value. Based on the energy savings and theincreased value of the building having wind turbines, the payback period is extremely favorable. The initial energy yields during the designphase was approximately 15%, therefore 1300MWh per year; however, from early commissioning results the turbines are estimated togenerate substantially more energy due to the reduced occupancy profile of the building and the wider operational period of the turbines.

Bahrain World Trade Center 1

CTBUH Initiatives

CTBUH Activities in Qatar 22-27 Sep 2010 – Event Report

Regional Tours, CTBUH 8th World Congress 2-6 Mar 2008 – Tour Report

Videos

Energy Harvesting and Motion Control of Tall Buildings UsingTuned Mass Dampers19 Sep 2012 – Ahsan Kareem, Professor, U of Notre Dame

Harnessing Energy in Tall Buildings: Bahrain World TradeCenter and Beyond3 Mar 2009 – Shaun Killa, WS Atkins

Interview: Atkins Middle East20 Nov 2008 – Shaun Killa, Atkins Middle East

Research Papers

Harnessing Energy in Tall Buildings: Bahrain World TradeCenter and BeyondMar 2008 – CTBUH 2008 8th World Congress, Dubai

Bahrain World Trade Center (BWTC): The First Large-ScaleIntegration of Wind Turbines in a BuildingNov 2007 – CTBUH / Wiley Tal Journal, 2007

CTBUH Awards

Best Tall Building Middle East & Africa 2008 WinnerCTBUH Awards 2008

http://www.ctbuh.org/Awards/SymposiumsCeremonies/OverviewofPastAwards/2008Awards/tabid/842/language/en-US/Default.aspxhttp://global.ctbuh.org/paper/1250http://global.ctbuh.org/paper/464http://global.ctbuh.org/video/824http://global.ctbuh.org/video/602http://global.ctbuh.org/video/577http://ctbuh.org/Events/ToursVisits/2008TourArchive/CTBUH8thWorldCongressRegionalTours/tabid/831/language/en-US/Default.aspxhttp://ctbuh.org/AboutCTBUH/GlobalRepresentation/CTBUHQatar/100927_CTBUHQatar/tabid/1706/language/en-US/Default.aspx