4.4 Structure

4.4) Structure

The Middle East tradition of high-rise buildings is based on designs traditionally from North

America., and these designs often fail to solve radical climate problems. Many existing towers mainly rely on high-performance reflective curtain wall systems using colored glass.

Although this system can provide satisfactory results, it usually provides low external views, Figure 4-7: Triangle façade structure fixation http://www.skylacks optimal lighting, and introduces excessive scrapercenter.com/building/al-bahar-tower glare to the outside. Or, fixed shading equipment is used in some applications, which has a positive effect, but is optimized for only one situation, so it cannot provide the desired result.

Figure 4-8: Façade main Components

Source; https://www.thenational.ae/business/uae-sustainable-skyscrapers-understanding-abu-dhabi-s-al-bahar-towersMain ingredients:

1. Actuator + power supply and control: cable connection back to the tower

2. Support sleeve

3. Cantilever support rod: hook on the sleeve

4. Star pin connection: receive uniform Y-arm end

5. Actuator housing: protect the actuator

6. Y-shaped structure ring hub: connect the Yshaped arm and the actuator together

7. Y-shaped structure sleeve: connect the Y-shaped arm to the hub

8. Y-arm: supporting the entire mechanismY-Mobile

To complement the shading scheme, the overall shape of the tower has been optimized. With two basic columns, the design began. In terms of wall-to-floor space, the circular plane provides the most effective shape while still producing the largest volume with the smallest surface area. Then explain the circular plan based on the combination of geometric circular shapes to Figure 4-9: Façade fixation source: https://www.designminimize exposure to sunlight and start cre- boom.com/architecture/aedas-al-bahar-towers/ ating natural directions. The tower was then carved around the core, narrower in the lower and upper parts, and wider in the middle.

Figure4-10: Façade fixation and material source: https://www.design-

boom.com/architecture/aedas-al-bahar-towers/

Figure 4-11: Façade dynamic mechanism source: http://www.skyscrapercenter.com/building/al-bahar-tower

To generate the shape of the towers, Aedes applied principles of geometrical composition derived from traditional Islamic architecture. Geometric design has been a hallmark of Islamic architecture for centuries, Because the circle and rotation reflect the obvious monotheistic and unified concepts in nature; important concepts in Islam and important traditional science. The benefit of this approach is to prevent dark glass that, at certain times of the day, ultimately restricts the incident light all the time, not just direct sunlight. Instead, these complex shadows allow daylight for most of the day, enabling artificial lighting and air conditioning to be used heavily indoors. The result is that the energy consumption of the twin towers has been reduced by 50%, and the energy consumption by solar energy has been reduced by 80%.

Figure 4-12: façade Section source: http://www.skyscrapercenter.com/building/al-bahar-tower

Figure 4-13: Façade dynamic mechanism source: https://www.theplan.it/eng/webzine/international-architecture/al-bahr-towers

The final outcome is a changing outdoor screen designed to respond to the sun's movement, protect the building's east side throughout the morning, and travel with the sun westward during the day. The impact can be compared with 2,000 parachutes for the spectator that open and close in exposure to rays of the sun.

Figure 4-14: indoor view source: https://www.e-architect.co.uk/dubai/al-bahar-towers-abu-dhabi

Figure 4-16: Albahar tower plan source: https://en.wikiarquitectura.com/building/albahar-towers/ Figure 4-15: Site Plan of the project source: https://www.e-architect.co.uk/dubai/al-bahar-towers-abu-dhabi

Figure 4-17: Albahar tower building layers source: http://www.ahr-global.com/Al-Bahr-Towers