The Rest Of The Assignment (assignment 2 ) Example

The Rest Of The Assignment (assignment 2 ) Example The Rest Of The Assignment (assignment 2 ) â€" Assignment Example > IntroductionTall structures or buildings whose height range from 75feet to 491feet are termed to as high-rise. The invention of elevators has made the construction of high rise building to be possible as noted by Eisele (2004). These structures require reinforced steel and concrete for their construction. High-rise buildings pose a great challenge to both the geotechnical and structural engineers especially if the building is located near or at a area which is prone to earthquakes or tremors. They are also a challenge to firefighters or brigades and especially a fire outbreak (Fairweather 2004). These buildings can also be defined as those buildings above 35m in heights and are divided into occupiable units or levels and as a result of their height, a mechanical method of transporting people up the building is required. Good examples of this building are the I. M Peis Bank of China Tower, Hong Kong and the Trump World Tower in New York City. In this case I will use Trump World Tow er as my high-rise example. External Cladding systemThis is a metal coating which is placed on another metal with high temperature and pressure hence forming an insulative layer to be fixed outside the building (Fairweather 2004). The main functions of this system is to prevent water from entering into the building, prevent leakage of air or passage of air between indoors and outdoors which may be harmful to the building, control light passage like sunlight, control heat radiation, water vapor, sound and heat conduction. Cladding systems are divided into three types which are metal based. They include cassette panels, composite panels and profiled sheeting (Eisele 2004). Profiled sheeting has been in use for many years and it is in fact the most common and it uses either steel or aluminum and can be used in both the roof and the walls. A cladding system can also be defined to as a complex back-ventilated fascia which is installed outside the buildings to ensure that the building r emains dry (Fairweather 2004). It protects the building against a mutual action of wind and rain by ensuring that there is a balance between water effects and the action of maintaining the building dry. It acts as a building insulator, the main purposes being protective and aesthetic. According to Eisele (2004) the cladding system for the construction of a high-rise building should have the following requirements which should act as protective features: it should be non- flammable, resistant to chemicals, air pollution, thermal shocks and sunlight, should have a high mechanical strength, light in weight, ductile and should have low water absorption. Natural stone, ceramic granite, aluminum coversheets and composite panel are some materials which can be used for external cladding. Figure1. External cladding materials/ systemThe above Figure 1 is mainly made up of aluminum profiles, insulating materials, external façade cladding and air gap which are attached to the surface wall of the buildingAir gapThis allows or gives room for air passage from the bottom of the building to the top. This is due to the differences in temperature between the air outside and the air inside. The differences in temperature make the air inside the ventilation gap to rise. It also serves the purpose of moisture removal in the building, prevents heat from penetrating through the wall hence ensuring that less heat is transmitted into the building in hot seasons and helps to keep the insulating material in a proper condition (Fairweather 2004)