Double Skin Façade Case Study

Double Skin Faà §ade Case Study Abstract Double skin faà §ade refers to a building faà §ade covering one or several stories with multiple glazed skins (Chan, Chow, Fong and Lin, 2009). The aim of this essay is trying to explore the definition, advantages and disadvantages of double skin faà §ade which was used in high rise building. Case study is the main method in this essay. The researcher has chosen three tall building cases which are Shanghai Tower in Shanghai, ARAG 2000 tower in Dusseldorf and Capital Gate Skyscraper in Abu Dhabi to explain the working principle of double skin faà §ade. Finally, it can be understand that double skin faà §ade is a kind of sustainable faà §ade strategy and It allows to lower energy consumption while making the interior spaces comfortable. It is cost effective in long term running but it will cost more to construct. Introduction Multi layer principle is applied on double skin faà §ade technology. They consist of an external faà §ade, an intermediate space and an inner faà §ade. The outer faà §ade layer is to provide protection against the weather and improve the acoustic insulation against external noise. It also allows ventilation through its openings between internal rooms of double skin faà §ade (S. Ahmed, Ali K. Abel, Rahman, Ahmed Hamza H. Ali and Suzuki, 2016). Gadgets and frameworks are for the most part incorporated keeping in mind the end goal to enhance the indoor atmosphere with dynamic or latent methods. (Poirazis, 2006). The historical backdrop of Double Skin Facades is depicted in a few books, reports and articles. Saelens, (2002) notices that in 1849, Jean-Baptiste Jobard,   an early form of a mechanically ventilated skin faà §ade mentioned at a museum in Brussels. Double Skin Facades are contracted by 3 primary components which are cantilever section structure, suspended structure and edge structure. Materials can vary as indicated by the outline yet metal, glass and timber are most uncommon ones. Considering the sort (geometry) of the hole they are divided into 4; Box window, Shaft box, Corridor faà §ade and Multi story double skin faà §ade. A comparable review by Heusler and Compagno categorise into three sorts of window, story and various stories. Context The Shanghai Tower is designed by Gensler Architects, a 127 story, 632 meter high, mixed use tall building located in Lujiazui, Pudong, Shanghai, China. As of 2016, It is the highest building in the world by its highest usable floor level (Level 127, 587.4m). The new tower takes motivation from Shanghais convention of parks and neighbourhoods. Its bended faà §ade and spiralling structure symbolize the dynamic rise of present day China (GenslerDesignUpdate, 2010). The innovative design incorporates two free curtain walls; first is the external skin cam-molded in plan and the second is the inward one is circular. In-between the two curtain walls form atriums which house landscaped public areas at regular intervals throughout the building (GenslerDesignUpdate, 2010). Series of wind tunnel tests used by the architects to simulate the biggest problem of the site context; the typhoon, which also refined the shape of the building (Zeljic, 2010). These sky patio nurseries will enhance air quality, make visual connections between the city and the towers insides, and give a place where building clients can communicate and blend (GenslerDesignUpdate, 2010). Double Skin Faà §ade The primary element considered for the double skin faà §ade performance depends on a bio-climatic idea of a passive atrium system, where two skins are situated so as to make an expansive, full-high atrium space profiting by every one of the advantages that caught air-and the regular convection of air-can give (Zelji, 2010). As an author view, I think this greenhouse effect could not be achieved with the help of additional   cooling and heating systems when I consider its location and the amount of air pollution the location has. There are two types of curtain wall systems, curtain wall A and curtain wall B, are designed for the   Shanghai Tower. In Curtain Wall A, Vertical mullion emphasised V strike to house and bolster a thick LED lighting apparatus design. The difference between A and B is that B need to stay one-hour fire-rating (Zelji, 2010). Context The ARAG 2000 Tower is designed by RKW in Dusseldorf, in collaboration with Norman Foster in London. It is located in northern district of Norsenbroich, Dusseldorf, Germany. It is a 124 meters of high and 31 storey office skyscraper and divided into four eight story tiers by service floors. It is headquarter building of European Insurance company (Wikipediaorg, 2017). Office floors are basic and open in feel. Cellular workplaces and meeting rooms ring the edge while assembled meeting spaces involved in the focal point of the central formed arrangement over the city (Fosterandpartnerscom, 2017). This tower is unique by its environmental design, it has a high performance, double skin glazed faà §ade and as well as interior organisation. Double height sky gardens intersperse the working spaces at every eighth floor. Open access between office floors and the patio nurseries supports a friendly environment and in addition enhancing communication between the staff (Fosterandpartnerscom, 2017). Double Skin Faà §ade As a result of the to a great degree high road noise levels, brought on by being near an inward city traffic intersection, the double skin facade designed as a shaft box cassettes. Those corridors in between two facades; the interior and the exterior is closed in each floor level. They can be open only in extra ordinary situations such as fire and high pressure difference between each cassettes of the faà §ade (Boake, 2013). Shaft box type double skin faà §ade used. And those defensive external layer frames a climate shield and sun channel; an internal layer, with windows which are allowed to be opened, permits the working spaces to breathe (Boake, 2013). Context Capital Gate is a iconic skyscraper in Abu Dhabi located next to the Abu Dhabi National Exhibition Centre designed by RMJM Architects. It is a 160 meters of high and   35 stories mixed use skyscraper, it is one of the tallest buildings in the Abu Dhabi and it inclines eighteen degrees to the west. It house offices from the second level up to the sixteenth level, and a five star hotel from the eighteenth level right up to the top (Wikipediaorg, 2017). The shape of the building comes from the two elements; sand and water. The form meant to represent swirling spiral of sand and while the curved canopy known as the splash runs over the ground stand and rises on the building faà §ade, creates a wave effect which reflects the water (Schofield, 2012). The designers of Capital Gate, the 18 degrees in reverse inclining tower situated in Abu Dhabi, had a noteworthy sustainable plan for the project. The offset of the floors to accomplish the retrogressive incline makes two particular sorts of spaces and exposures which have brought about the utilisation of two sorts of double skin faà §ade frameworks (Boake, 2013). Capital Gate Skyscraper`s base structure is a vertical concrete center encompassed by a steel diagrid portraying the outer shape of the tower. Steel shafts traverse between the two supporting metal deck and solid composite floor sections. Steel supports span between the outside and inward diagrids, making column free floor spaces within a normal ranges of twelve meters (Schofield, 2012). Double Skin faà §ade The hotel rooms located at the after 19th floor has a jewel shaped pre-assembled shade divider framework is connected to the basic steel diagrid of the skyscraper and forms the outside layer which reuses inside air from the visitor rooms into the faà §ade pit while makes a protecting support between the cool inside and the to a great degree hot outside (Boake, 2013). Office Floors have unique skin called the sprinkle shelter. It begins at the ground level, ending at the projecting pool level located at the nineteenth floor which allows air circulation while blocking the solar radiation (Boake, 2013). Discussion According to those three double skin facades case studies, it can be concluded by the advantages and disadvantages of using double skin faà §ade in tall building. Huge amount of Energy can be saved by using double skin facades. Double skin faà §ade can maintain the internal spaces comfortable with the help of natural ventilation when cooperated with building management system. It is helpful to heat and cool the interior spaces. Maintenance costs much higher when compared with single faà §ade maintenance. Its construction is expensive compared by the single faà §ade construction. Conclusion All features of the double skin faà §ade usage in the tall buildings illustrated by analysing three tall building cases. As it is mentioned above, the advantages and disadvantages, it can be concluded by being agree on, although double skin faà §ade is much more expensive to construct compared to single faà §ade it is a sustainable design strategy which is helpful to cool and heat the interior spaces at the same time being great sound isolation to the building.

Henry Wadsworth Longfellow :: Henry Wadsworth Longfellow

Henry Wadsworth Longfellow Look then, into thine heart, and write! â€Å"Master Henry Longfellow is one of the best boys we have in school. He spells and reads very well. He can also add and multiply numbers. His conduct last quarter was very correct and amiable.† This quote is from a letter sent home from Longfellow’s school when he was just six years old. Henry Wadsworth Longfellow was born February 27, 1807, in Portland, Maine. He was the son of Stephen Longfellow and Zilpah Wadsworth Longfellow. Early on, his parents could see that he had an interest in literature. His mother read to him frequently. Don Quixote was one of his favorites but it was Washington Irving’s Sketch Book that influenced him the most. Sent to school at just three years old, Longfellow graduated from Bowdoin College at 19. Upon graduation he was offered a job as professor of modern languages, a program that the college was just putting together. He accepted the position with the stipulation that he would be given a period of time to travel and study in Europe. It was on this journey that he was able to retain many ideas for his future writings. Longfellow walked through the countries so that he could stop at inns and cottages and talk to people. He met peasants, farmers and traders. He traveled to Spain, Italy, France, Germany, and England. Returning to America in 1829, he started his career as a college professor. He had to write his own texts because there were none at that time. In 1831, Longfellow married his first wife, Mary Storer Potter. In 1834, he was offered a professorship at Harvard. Once again, he set out for Europe to prepare himself to teach. His wife accompanied him on this trip and died in Rotterdam. Arriving at Cambridge alone, he took a room at historic Craige House. Eventually, the house was purchased by Nathan Appleton. Seven years after Longfellow came to Cambridge he married Mr.

The Relevance of Loyalty in “Julius Caesar”

The Relevance of Loyalty in Julius Caesar In the Shakespearean play Julius Caesar, loyalty is relevant to each person. In the eyes of Marc Antony, Marcus Brutus, and Cassius, the term â€Å"loyalty† means something entirely different to each man. In a sense, each of the three characters is only loyal to what he thinks is good and right but in some cases, his morals also fluctuate with his desires. Marc Antony plays the specific role of a son-like figure to Caesar.He takes no part in the conspiracy which eventually leads to the demise of Caesar although when Caesar does die, Antony baits Marcus Brutus with flattery to ensure his relative favor with Caesar’s murderers. Nonetheless, Marc Antony is loyal to Caesar as well as the memory of Caesar. He uses his â€Å"favor† with Brutus and the conspirators to gain permission to speak at Caesar’s burial ceremony, subtly inciting rebellion in the citizens of Rome. As previously stated, Antony is loyal to Caesar in life as well as in death.Marcus Brutus’ loyalties, on the other hand, lie with Rome. As one of Caesar’s most trusted friends, Brutus respects and admires Caesar but when decisions concern the entire Roman Empire, Brutus weighs Rome more important than his friend. Because of this loyalty to Rome, Brutus is swayed by one of the conspirators and becomes a conspirator himself. He doesn’t side with Caesar’s enemies because of envy or jealousy but because he believes it is the right thing to do in Rome’s best interest.During the play, Brutus is in constant war with himself, wondering if what he did was the right thing. His loyalty to Rome and his friendship with Caesar battle with each other throughout the piece. Cassius, however, is consumed with a lust for power and Caesar is obviously in his way. It seems he plots to kill Caesar for his own personal gain. Cassius uses Brutus as a â€Å"puppet†, thinking Brutus will do whatever he requests. He i s abruptly proven wrong when Brutus confronts Cassius of his crooked demands.Cassius is enraged but is placated soon after. He is loyal only to himself, using the excuse of preserving democracy to rationalize his actions. Marc Antony was loyal to Caesar, Marcus Brutus was loyal to Rome, and Cassius was loyal to himself. Three men fought for three different causes, two noble and one ignoble. Though Brutus and Cassius both wanted Caesar’s death, they wanted it for two very different reasons. In Julius Caesar, loyalty is consistent with men’s beliefs. Each man made his choices based on the foundation of his loyalties.

Arguments For The Existence Of God - 1137 Words

Arguments for the existence of God come in many different forms; some draw on history, some on science, some on personal experience, and some on philosophy. Descartes offered two arguments towards the existence of God: an informal proof in the third meditation and the ontological proof in the fifth meditation. Descartes believed that with the employment of a rational method of inquiry which applied some of the methods of analytic geometry to the study of philosophy, our ability to attain certainty and validity about our knowledge would be greatly increased. For Descartes to include a second and distinct proof for the existence of God, he must have believed that the causal argument was not strong enough. In Descartes’ opening letter of†¦show more content†¦Up to the present time, he says, he has accepted the knowledge acquired through sensory experience as the truest and the most certain knowledge; yet sense perceptions may be illusions, the products of dreams or hallucinations. Individuals could be existing in a prolonged â€Å"dream state† that seems quite real while there is no way to prove that they are awake. These facts led Descartes to doubt the certainty of everything. The only thing he could not doubt was that he existed because obviously he did, and for a reason. In the second meditation, Descartes declares that this universal doubt makes him feel like a swimmer who is suddenly plunged into deep water. He therefore assumes that everything is false and that he has no memory, senses, or body. Even what he perceives as â€Å"reality† could just all be a lie. At this point he has found the first of what he calls â€Å"clear and distinct ideas,† ideas so certain that they cannot possibly be denied. The second argument that Descartes gives for this conclusion is far more difficult. This argument rests on the distinction between two sorts of reality. Formal reality is the reality that anything has in virtue of existing. Ideas, however, also have another kind of reality, unique to them. When considered in their relation to the objects they represent, ideas can be said to have objective reality. The amount of objective reality contained in an idea is determined solely on the basisShow MoreRelatedThe Argument On The Existence Of God1629 Words   |  7 PagesThe idea of God has been a part of man’s history for centuries. Since time began there has been various combination of believers, and non-believers. Individuals who believes in God, belong to many different religion. Whereas, skeptics find the existence of God somewhat baffling, and have continually sought answers to His existence through scientific methods. As the world progresses in scientific, and technological advance ment, the human race still faces the question of God’s existence. Many philosophersRead MoreThe Arguments For The Existence Of God1056 Words   |  5 Pages16 November 2015 Rough Draft for The arguments for the Existence of God. The question Does God Exist? is a well-known asked question in the world. Most people believe they know the answer to it. The religious people would say, well of course he does, while the non-religious people or atheist would say no He does not exist. Because evil exist and chaos exists, God cannot be all-powerful. In the modern world, there are many different opinions as to whether a God exists or not. This has been an issueRead MoreThe Argument For The Existence Of God1674 Words   |  7 Pagesfind the three arguments I analyzed satisfactory for the existence of God. The existence of God simply cannot be proven. Regardless of how strong a person’s faith is, or how many miracles they claim to have witnessed, God can only ever be a possibility. First, I will discuss why Pascal’s wager is not a satisfying argument for the existence of God. I will then examine C.D. Broad’s â€Å"Argument for the Existence of God†, and why it is also not a satisfying argument for the existence of God. Finally, IRead MoreArguments For The Existence Of God974 Words   |  4 PagesArguments for the existence of God through critical thinking and rationalization are called ontological, cosmological, teleological, or pragmeatic arguments. The most widely known of such arguments is that of St. Anselm from Proslogium of St. Anselm, which states that God is considered a perfect being unlike humans or any other world subject. The fact that he is perfect in a world of imperfection proves his existence. God is also the highest conceivable idea of perfection, and thereforeRead MoreThe Existence Of God : An Argument881 Words   |  4 PagesThe Existence of God The philosophical arguments presented in this document are not of religious text, nor scientific observation or established fact. Rather the premise of this God proof is bring together and share the various theories on which other God proofs have established foundations. 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