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Architecture Group : Chia Pei Qin 1005344 Choong Zhi Wei 1006476 Keng Shen Kai 1100556 Lam Kok Sang 1006819 Lim Li Xin 1101247 Yeow Wai Seng 1101268

Saturday, 24 March 2012

Building with concrete

    Concrete is used more than any other man- made material in the world. It is ion of the most durable building materials as it provides superior fire resistance and can gain strength over time. Concrete structures can have a longer service life compared to other building materials. Reinforced concrete, prestressed concrete and precast concrete are the most widely used types of concrete functional extensions in modern days.
















Sustainable benefits of concrete structure:

Energy efficiency

    Energy used in producing and combining the raw materials of the concrete is relatively small as compared to most man- made structural building materials, although large amounts of carbon dioxide are produced by the chemical reactions in cement manufacture. Moreover, energy requirements for transportation of concrete are low because it is usually manufactured within 100 kilometers of the job site from local resources. Also, air leakage from concrete walls are far lesser (compared to wood frames), this accounts less percentage of energy loss. Concrete's thermal mass reduces temperature swings inside and minimizes heating and cooling costs, this increase the efficiency of both residential and commercial buildings. To create an energy efficient building, modern concrete wall systems use both external insulation and thermal mass ,insulation reduces energy loss through the building envelope, thermal mass uses walls to store and release energy.

Fire safety

    Concretes do not burn! Therefore, it is more resistant to fire than wood or steel. Concrete has lower risk of collapse and is an effective fire shield, providing safe means of escape and protection for occupants. Precast concrete (cast-in-place and hollow) are the materials for producing non-combustible construction.




Earthquake safety

     Large earthquakes can generate large shear loads on structures. Concrete has strong compression strength, but is weak in tension. Shear loads of large earthquakes cause tensional and compressional loads to the structure. These risks can be reduced through seismic retrofitting of at-risk buildings.
    Concrete’s lateral stiffness also provides the best resistance to high winds, hurricanes, tornadoes that result in minimal horizontal movement.

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