Sunday, September 15, 2019

History of Eugenics: How Those in Power Shape the Perfect Human Essay

Eugenics, the study of hereditary traits with the aim of producing an ideal human, and â€Å"on a societal level, programs that control human reproduction with the intent of changing the genetic structureof the population†, (Lewis, 299) are not a new concept. The history of eugenics reaches as far back as 400 B. C. , and extends to dates as recent as 1994. From Athens to Sparta, United States to Germany and China, the quest to improve the human race has spanned the world. ‘Improve’, however, is a highly subjective term. Who decides what an ideal human looks like? And what are the appropriate ways to build a race of such people? The answers to these questions have changed throughout the centuries. People considered ‘ideal’ by the eugenics program in one culture would be scheduled to be euthanized as ‘undesirable’ in another culture a few centuries later. Upon reviewing the history of eugenics, it becomes apparent that the section of a society in power at a particular time in history, usually seeks to eliminate those least like themselves, in order to impose not only their values, but their very phenotype on society at large. The first written accounts of eugenics reach back to 386 B. C. In his work â€Å"The Republic†, a description and plan for an Utopia, or ‘ideal society’, the Athenian philosopher Plato is said to have written that procreation should be controlled by the state. Through a state-sponsored selection of mates, â€Å"race would be strengthened by improved children†. (â€Å"Life of Plato†). Men aged 30-45 would be allowed to reproduce, as well as women aged 20-40. Any child born in violation of these laws would be abandoned outside the walls of the city. Some of Plato’s ideas had already been put into action in Sparta, around 431 BC. In line with the concept of ‘Eunomia’, weak male infants were left to die on slopes of Mt. Taygetus. (â€Å"The true story†¦Ã¢â‚¬ ) â€Å"The Spartans practiced an uncompromising genetics programme. Newborn babies were raised only if healthy and perfect, so as not to be a burden to the state and to ensure genetic up-breeding. † (â€Å"Leonidas the Spartan†). It is worthy of noting that the Spartans were Greeks- with olive skin, dark curling hair, and brown eyes. To them, physical fitness was more important than moral virtues: â€Å"Sparta was hardly famous for chaste women,† according to Euripides, a then-contemporary writer. â€Å"Leonidas†¦Ã¢â‚¬ ) The ideal person was a strong, fit male, and a woman who could reproduce often, bearing healthy children. This ideal was written into law by the Spartan King Leonidas, and adhered to until the eventual fall of the Spartan city-state. The next worldwide resurgence of eugenics occurred in the Victorian era. In 1863, Britain’s Sir Francis Galton, who was a cousin of Charles Darwin, coined the term ‘eugenics. ’ (Lewis, 300). He theorized that the mating of two talented people would produce better offspring. (â€Å"Eugenics Timeline†). His ideas rapidly spread to the United States and Germany. The concept of selective mating to achieve the elimination of undesirable traits became popular. â€Å"Stanford President David Starr Jordan originated the notion of â€Å"race and blood† in his 1902 racial epistle â€Å"Blood of a Nation,† in which the university scholar declared that human qualities and conditions such as talent and poverty were passed through the blood. † (Black, Edwin. ) Soon after, in 1907, the US state of Indiana passed the world’s first mandatory sterilization law. (Smith, pg. 36-137). The aim of the law was to prevent the birth of children which might inherit such undesirable traits as ‘criminality, mental defects and feeble-mindedness’. In 1911, the â€Å"Preliminary Report of the Committee of the Eugenic Section of the American Breeder’s Association to Study and to Report on the Best Practical Means for Cutting Off the Defective Germ-Plasm in the Human Population†, a venture which was supported by Andrew Carnegie, one of the greatest philanthropists of that era, listed 18 solutions to resolve this problem. Number Eight was euthanasia of undesirables. A gas chamber was suggested as a possible option. (Black, Edwin). In 1918, Paul Popenoe wrote a widely used textbook, â€Å"Applied Eugenics†, which again recommended euthanasia: â€Å"From an historical point of view, the first method which presents itself is execution†¦ Its value in keeping up the standard of the race should not be underestimated. â€Å"(Black, Edwin). We may be tempted to believe that euthanasia as a form of genetic control never came to be used in the United States, but this is not the case. At the ame time Popenoe propagated his ideas, a mental institution in Lincoln, Illinois had a policy of feeding incoming patients milk from tuberculosis-infected cows. It was thought that an ‘eugenically strong’ individual would be immune. The institution had a 30-40% death rate of incoming patients. (Black, Edwin. ) But those deemed insane were only the first on the long list of people considered ‘genetically inferior’. They were closely followed by those deemed ‘feeble-minded’ or ‘licentious’. Most recent immigrants fell into the first group- IQ tests of the time determined that the average immigrant had a â€Å"moron-grade† intelligence level. Smith, John David. pg. 161) IQ was considered an innate characteristic, something that was definite, unchangeable and inheritable. Nevermind the fact that the IQ tests were administered in what usually the immigrants’ second language, by untrained secretaries or other flunkies , and skewed to favor Americans of ‘Nordic’ descent. Because of economic hardship during those times, many people in power sought to limit the tide of immigrants- which were coming mostly from Eastern European countries, as well as Italy. Eugenecists and their wealthy supporters shared an antipathy for [†¦] class struggle†, and considered ‘poverty’ another inheritable trait. In this way, they could successfully â€Å"blame the victims for their own problems†. (Allen, Garland E. â€Å"Social Origins of Eugenics†. ) Jews and Gypsies, in addition to African-Americans, were also considered of inferior genetic stock, because they did not represent the Nordic phenotype ideal that was most similar to those in the ‘ruling class’. Eugenic tests were conducted to support this agenda. The results were mostly skewed, and sometimes, as in the now-infamous Kalikak study, altogether manufactured. The Kalikak study was the basis of a book written in 1914 by Henry Goddard, titled â€Å"Feeblemindedness: Its Causes and Consequences. † The book became very influential, and led to many states adopting laws for the forcible sterilization of ‘feebleminded’ individuals, and other undesirable traits shuch as being ‘passionate’ or ‘sexually wayward’. In Sonoma, California, some women were sterilized because of ‘abnormally large clitoris or labia’, which doctors thought may lead to licentious behavior! Black, Edwin. ) Rapists and similar criminals were generally not subjected to sterilization; instead, most of the sterilized were women. It quickly becomes apparent that the less-than-ideal traits in the United States in this age were: being promiscuous, socially dependent, or from a non-Nordic country. These qualities are quite different from those considered undesirable a few centuries earlier, by the Athenians and Spartans. The spread of eugenics continued, from the United States to Germany. Germany was undergoing great economic hardship after WWI, and Hitler’s proclamation that they were of a superior ‘Germanic’ or ‘Aryan’ race and thus entitled to more of the world’s resources was very well received. In 1924, Hitler espoused his version of eugenics in his book ‘Mein Kampf’. Hitler even wrote a fan letter to US eugenics leader Madison Grant, calling Grant’s book ‘The Passing of the Great Race’ his ‘bible’. (Black, Edwin. ) Hitler’s ideas corresponded to the American eugenecists concepts of the superiority of a White Race. In the US, marriage between Whites and Blacks was forbidden by law in many states, with the aim of keeping the ‘superior’ White race ‘pure’. In fact, inter-racial marriage did not become universally legal in the United States until 1967. Because of their similar outlooks, American and Nazi eugenicists often corresponded and shared research. John D. Rockefeller even donated $410,000 ($4 million by today’s standards) to German researchers for eugenics research. The ‘research’ was done on Jews, Gypsies and others. In 1932, the Rockefeller Foundation gave additional funds for the Germans’ research on twins and â€Å"substances toxic to germ plasm†. In other words, human testing of lethal substances, or those causing infertility. As eugenics research continued, so did the collaboration of German and American scientists- in 1934 there was even a Nazi display in LA, for the annual meeting of the American Public Health Association. (Black, Edwin). The Germans seized upon the American idea of sterilization of undesirables, and by 1934, were sterilizing 5,000 people per month. By 1939, they had moved on to euthanizing 5,000 children with birth defects or mental retardation, followed by 70,000 ‘unfit’ adults. (Lewis, Ricky. pg 300) As WWII swept over Europe and Hitler gained control of more lands, his armies and his doctors embarked on a quest of purging the lands of their native, ‘inferior’ populations. According to the United States Holocaust Memorial Museum, â€Å"in 1933, there were approximately 9 million Jews in Europe. By 1945, the Nazis had reduced that number to about 3 million. Roma (Gypsies) were also sent to the concentration camps, resulting in about 200,000 Gypsy deaths. Physically and mentally handicapped, homosexuals, and Polish intellectuals accounted for at least another 200,000. This totals about 6,400,000 victims of the concentration camps. The Nazis also killed between 2 and 3 million Soviet prisoners in labor camps or executions. Added to this toll should be the non-Jewish Poles and Soviets sent to forced labor who died due to malnutrition, unsafe work conditions, disease and â€Å"experimentation. † The experimentation in question was most notably conducted by Josef Mengele, an eugenicist who arrived in 1943 in Auschwitz. His aim was to conduct ‘anthropological testing’, which involved gruesome torture of his subjects. (Black, Edwin. ) Once again, the prerogatives of the class in power influenced the eugenics movement, by seeking ways to eliminate those not fitting the ‘Aryan’ ideal, which included men and women who were tall, blonde and blue-eyed, and of the ‘pure’ Germanic stock. After World War II, eugenics was declared ‘a crime against humanity’. (Black, Edwin. ) The American eugenics movement was renamed â€Å"human genetics† in 1949, and many of the same scientists continued their research. Meanwhile in Germany, Mengele’s boss and mentor became a dean of a university, and a member of the American Society of Human Genetics. The eugenics movement, though renamed, was not extinct. Eugenics laws were passed as recently as 1994 in China. â€Å"The Maternal and Infant Health Care Law’ proposed to â€Å"ensure the quality of the newborn population† and forbid procreation between two people if physical exams show ‘genetic disease of a serious nature’† including mental illness, seizures and other conditions that were ill-defined and not necessarily inherited. (Lewis, Ricky. g. 300) Given the oppression, infanticide, forced sterilization and genocide that resulted from humans’ attempts at eugenics over the course of history, it is difficult to see any positive aspects of the concept. Because the ruling class determines the ‘desirability’ of superior traits, any benefit to mankind in general is doubtful- the perceived benefit to some comes at the price of the suffering and death of many. Overall, eugenics seems to seek to negatively impact genetic diversity, which has long been a quality that has facilitated the survival of mankind. The presence of eugenics in modern times is the subject of much debate. Some interpret the assistance given to infertile couples in modern times as a form of eugenics, but this is hardly the case. These are merely the attempts of individual people to have a baby which looks like them, to fulfill their dreams of having a family. No one is paying them to reproduce any supposedly-superior genes (‘positive eugenics’), or trying to limit their reproductive rights (‘negative eugenics’), (Lewis, Ricky. g. 299) There is also the matter of the genetic research into the Human Genome, and by extension, into inherited genetic diseases. However, this research aims to limit human suffering, is non-invasive for the patient and leaves all decisions to the parents of the potentially-affected offspring. None of the aspects of ‘negative eugenics’, such as sterilization of the parents or the abortion of the fetus are mandated by any law, and any government at this time. Nonetheless, human rights activists and all citizens must remain alert, lest the ghost of eugenics should rear its ugly head again. Genetic history should never be a matter of public record, and a person’s genes should never be the basis of discrimination against them. Federal genetic anti-discrimination legislation was finalized in the US in 2008, and it is hoped that other countries will follow suit. We must always remember the injustices committed in the past, in the name of ‘creating the ideal human’, and strive to prevent them in the future.

Saturday, September 14, 2019

Hanging Tongues

In the article â€Å"Hanging Tongues: A Sociological Encounter with the Assembly line† Thompson (1983) there are many connections between the Physical structure of the beef processing plant and the social structure of those working within it. The layout, design and decor of the beef plant both directly and metaphorically impact on the social structure within the plant, pertaining to (among other examples) a sense of isolation, hierarchies, formalisation and standardisation. The physical layout of the beef processing plant appears to be similar to many other assembly line factories, the ‘kill floor’ as Thompson refers to it, being a large open space with work stations located around the area. Thompson describes an â€Å"Overhead stainless steel rail†¦ curved its way around every work station in the plant. † We see that although physically all the different work stations on the ‘kill floor’ are connected, the connection is mechanical, part of the layout of the factory. Despite the open plan space in the factory there is much isolation among the workers, even though they are all working on the same production line. Although most workers know each other on sight, it is unlikely that they would know more than first names due to the nature of the work they are doing. Each worker on Thompson’s ‘offal’ station was expected to handle 187 tongues per hour, plus cleaning of racks and trays. This is quite a high work rate and there is little time for small-talk with co-workers. This rate required from workers creates a division between the workers who have little time to stop, besides designated breaks and management who seemingly ‘sit behind their desks all day’. Also concerned with the layout of the factory was the separation of the ‘kill floor’ with the executive offices. This layout in the factory underlines the hierarchy of the social structure within the plant. At the bottom of the ladder we have the workers. They work on the ‘kill floor’ which is the dirtiest, most dangerous and most monotonous job. The Management and executives of the company are at the top of the hierarchy, they are separated physically from the ‘kill floor’ as they cannot be seen to get dirty themselves. This would make them subordinates to their ‘equals’ in the business world. Little is noted of the management in â€Å"Hanging Tongues† except that they â€Å"Rarely ventured† to the ’kill floor’ where Thompson’s research took place. Their offices are separate, keeping them isolated from the dirty, dangerous work on the factory floor. The other physical separation in the beef plant was between the inspectors and the workers. There is understandable animosity between the two groups. As they start the inspectors are on a lower wage than the workers. This is presumably because the nature of the inspector’s job is a lot less dangerous, and less physically demanding than that of the ‘beefers’. The only interaction between inspectors and workers is of a negative nature, as the inspector will be telling the worker that the work is not of a high enough standard, this slows the progress of the workers and causes resentment towards the inspectors. Due to this negative interaction, inspectors are kept separate from workers eating â€Å"in a separate lunchroom† according to Thompson. The design and decor of the beef processing plant also contribute to the social structure of the workers. Almost everything on the ‘kill floor’ is made of stainless steel, the benches, knives, tubs etc. This sterile equipment makes a sterile working environment, which makes the workers feel that their workplace is even more impersonal. Some other aspects of decor and design also lead the workers to this isolated mindset. Sealed cement floors and Ceramic tile walls are cold and impersonal. Everything is cleaned down at every break and shift change, as if the workers had never been there. There is no sense of individualism for the workers, instead we see in action the â€Å"metaphor of the organisation as a machine† Morgan (1998). Whereby the workers are not considered as individuals, but as functioning parts of a machine, objects that do their part in order to create a finished product (in this case a butchered cow). Another example of the decor observed by Thompson was that of the safety posters plastered over the walls, reminding workers that they should be wearing safety equipment, and working carefully at all times. This decor around the workspace (where we can imagine that management have pictures of their families instead) creates another division between â€Å"us† (the workers) and â€Å"them† (management). The posters also serve to remind the workers that their jobs are undeniably dangerous, workers being forced to face the fact that every day they are working they are in physical danger from the jobs they do. One last observation about the decor in the factory is the lack of clocks. Management try to control certain aspects of the workers day, this is one way in which they do it. By not letting workers know that their break / end of shift is going to arrive management are trying to avoid the inevitable ‘slacking off’ before the end of a shift, or ducking out early. This control is one thing that workers have tried to regain, as the person at the start of the production line starts â€Å"clanging his knife against the metal† when the break in the line appears. The knife banging gets passed from station to station and Thompson said he knew that â€Å"it was exactly 35 minutes until the end of the line would reach me†. Even though it is really just a symbolic way of gaining some control back, it is an important form of communication between the normally isolated workers. Formalisation, pertaining to rules and procedures implemented at the beef processing plant are an important dimension of organisational social structure. Hatch (2006), states that â€Å"formalization tends to reduce the amount of discretion employees have in performing their work tasks†. The physical structures that the beef plant has that connect with this statement are numerous. The posters about wearing safety equipment are one example; the sterile, dangerous equipment they use is another. Formalisation, according to Hatch, also helps to determine pay levels. In Thompson’s â€Å"Hanging Tongues† we see a specific example of this in the reference note stating that the ‘shackler’ is paid 10cents per hour more than the workers because of the more dangerous nature of his job, dealing with flying hooves, and hooks and chains. Standardisation is a dimension of organisational social structure that is inherent in Thompson’s â€Å"Hanging Tongues†. Much mention is made of the monotony of the work. The workers do the same job, in the same way, day after day. Their surroundings and equipment are always the same. It is this ombination of standardised work and surroundings that connects the social and physical structures in this beef plant. The work may be efficient, but the monotony and the dangerous aspects of the job are crucial factors in the high turnover of staff in assembly line jobs. There are many connections between the physical and social structures of the beef processing plant that Thompson has stud ied. Hierarchies and divisions of labour are common practice in social structure, as in many organisations they are the easiest way to get work done effectively. The same is true of physical structures based upon keeping management away from the dirty work, or ‘kill floor’. What is important is that we can see how these structures impact upon each other making the business what it is. References Hatch, M. J. (with Cunliffe, A) (2006). Organisation Theory: modern, symbolic, postmodern perspectives. (2nd Ed. ). Oxford: Oxford University Press. Morgan, G. (1998). Images of organisation: The executive edition. Thousand Oaks, CA: Sage pp 3-13. Thompson, W. E. (1983). Hanging Tongues: A sociological encounter with the assembly line. Qualitative Sociology 6 (3), 215-237.

Friday, September 13, 2019

Analysis Of The Novel Scarlet Letter Essay -- The Scarlet Letter, Na

Hester Prynne is adorned with namesake of this novel as a result the sin that she committed. Although she is a â€Å"sinner†, she is far from an evil character; instead showing compassion and offering help often. She made a mistake but accepted her punishment, and became a better person because of it. Prynne did not allow her sin to define who she is as a person. She has committed far less sin than many of the characters in the book, but because of the society she lives in she is made an outsider because of her actions. There is very little evil behind her sin. She was left alone, and was unsure ifte. He saw a sin enacted against him, and instead of letting it go, or growing because of it, he lets himself become such an evil person, that it is subtly implied that he is the devil himself. He prevents the happiness of many, and directly leads to a man’s death. The actions of this man are certainly CHILLING. Sin and evil are driving forces of â€Å"Scarlet Letter†, and they are shown in different ways in different people. The way people act in the face of evil is very indicative of who the person truly is. Some people grow from sin, while others let it eat them alive. Those who commit the most visible sin can be the most good-natured, while someone who commits their sins unknowingly to others can be the most evil. Hawthorne is able to provide clear examples of the varied types of people in the world, and how their evil actions can affect the community around them.

Performance Review Memo Essay Example | Topics and Well Written Essays - 500 words

Performance Review Memo - Essay Example The different writing styles are now deeply entrenched in my writing and can be selected interchangeably depending on various course requirements. For example, most of the assignments given required that we use either APA or MLA referencing styles. Moreover, the course has helped in the acquisition and improvement of such skills as teamwork that would have otherwise not been learned. The group work helped in learning how to collaborate with other members in achieving a certain goal. The nature of the work, for instance, allowed us to divide the various aspects amongst ourselves and later compiled the work together. Group members were given the liberty to choose the areas that they felt adeptly knowledgeable therefore making the quality of the work better. In addition, and most importantly, the course has improved the ability to develop good research questions and strategies for meeting the research objectives. This ability was enhanced by the step-by-step approach employed by the lecturer. To help in the effective functioning of the group, we broke down the assignment into four parts one for each of us. Delegation of duties is one role that we highly appreciated in a bid to hasten the process of research. All the group members were helpful in achieving the set objectives. Most importantly, each of us selected the areas of the assignment that we were most conversant with. I contributed highly in the area of consumer education as a response to reducing theft of beauty products at the fresh market. Ali’s contribution in the group was most visible in the aspect of employee education as an effective tool of reducing theft of beauty products at the Fresh Market. This is an area that he is well versed in and most of his points came from real experience coupled with supporting literature review. Sara’s contribution was as important as everyone else’s and she did her job

Thursday, September 12, 2019

How important was nationalism as a cause of the collapse of communism Essay

How important was nationalism as a cause of the collapse of communism in Eastern Europe - Essay Example In this paper, the term nationalism is used in the meaning of political doctrine and ideology which is justified by a goal to make a certain nation succeed in pursuing its interests. In this context, a nation is understood as â€Å"a political, ethnic, territorial, cultural, or religious group united by a common economy, mass culture, common legal rights and duties, and a belief system that emphasizes either shared history and genealogy or other common myths distinguishing this group from others† (Smith, 1991: 14). Molchanov (2000: 264) observes that nationalism today is a product of modernization as well as mass education. It is also a product of the elites’ conscious manipulation of country’s masses. Nationalism is based on national feeling, i.e. a feeling of belonging to a community which is culturally distinct and goes beyond people’s circles of important others, covers the barriers of statuses and classes, and on a legitimate basis commands its member s’ loyalty. In this respect, a national community is perceived as an imagined community with its contours being reconstructed during the process of national mobilization (Molchanov, 2000: 263). As for the national elite, it serves a mobilizing agent in this process. Its parochial interests get the status of national interests and become values for which all compatriots fight. Typically, the elite is made up of well-educated classes â€Å"from the indigenous nationality and local administrators† who have become dissatisfied with current social standing (Molchanov, 2000: 264). ... It is also a product of the elites’ conscious manipulation of country’s masses. Nationalism is based on national feeling, i.e. a feeling of belonging to a community which is culturally distinct and goes beyond people’s circles of important others, covers the barriers of statuses and classes, and on a legitimate basis commands its members’ loyalty. In this respect, a national community is perceived as an imagined community with its contours being reconstructed during the process of national mobilization (Molchanov, 2000: 263). As for the national elite, it serves a mobilizing agent in this process. Its parochial interests get the status of national interests and become values for which all compatriots fight. Typically, the elite is made up of well-educated classes â€Å"from the indigenous nationality and local administrators† who have become dissatisfied with current social standing (Molchanov, 2000: 264). Exploring the political agenda of contempor ary nationalism, one may state that it necessarily develops in its connection to state (Tibor, 2010: 36). The relationship between nationalism and the state is discussed in two major modes. The first one describes the situation when the representatives of the indigenous nationality already have control over the state. They make efforts to unite people and create their specific nation. It is characterized by a focus on cultural and linguistic homogenization, consolidation of political connections, and creating the feeling of solidarity. The activity of the government results in education standardization and decrease of the social distance which may be found between the society layers (Gellner, 1998). The second mode of nationalism development within the state is when the elites do not possess control over

Wednesday, September 11, 2019

Immigration In Relation To Texas Government Research Paper

Immigration In Relation To Texas Government - Research Paper Example In Texas, the immigration reform coalition of Texas is the most notable interest group against immigration into the United States. The interest group supports migration into the United States but on a reasonable level. They argue that although they have no disrespect for immigrants, it is appropriate to notice the rising levels of immigrants. Their claim on this is valid since most immigrants in Texas are from Mexico. It is a common case that drugs infiltrate the border into Texas. The most cases of drugs supplied by immigrants are in border counties like Maverick County. The immigrants not only cause huge population influx but also an increased crime rate (Arnold 40). This interest group, therefore, demands a secured and well defined border. This is on the notion that not all immigrants enter the United States legally. They interest group reiterates that not all immigrants enter the United States with a good intention. Some come with the aim of harming. This interest group wants an overhaul in the immigration policies and laws. They demand that policies should be set up to curb the sanctuary cities. An overhaul of the immigration policies will also derail magnets that draw illegal immigrants into the United States. The Federation for immigration reform (FAIR) is an interest group that seeks to facilitate and broadens immigration policies. It majorly focuses on reforming the immigration policies in America. This is through organizing legislative and political topics across the country. This interest group has been successful in making Congress pass the immigration reform bill. This was after a bipartisan vote in Congress. Clearly, interest groups take a major role in immigration issues. Public opinion plays an important role in immigration issues. It is through public opinion that interests groups develop (Strauss 100). The interest groups influence political parties. It is in line with this that there is a notable chain of relationship between these groups. In Texas, public opinion maintains a clear stand that border security and immigration issues are critical issues to be addressed. A minority in Texas believe that setting up stricter laws and policies will reduce immigration problems. The larger majority, however, maintains that there is the need to reform the immigration laws to accommodate more immigrants. Some oppose amnesty and relate that it is the reason why the immigration laws cannot be well reformed. The questions, in the opinion polls, are simple, clear, and do not influence opinions towards supporting stricter immigration laws. In America, the Republican Party wants stricter laws to be imposed for illegal immigrants. They want sanctions on individuals who hire illegal aliens. The Republicans also want border security enhanced (LeMay 127). They suggest that no amnesty should be granted to illegal aliens. The Democrats, on the other hand, want the United States to have more borders that are open. In Texas, the Democrats are m ostly Hispanic, and it is in line with this that they mostly support open borders and less strict immigration policies and laws.

Tuesday, September 10, 2019

Construction Technology, Services and Materials Assignment

Construction Technology, Services and Materials - Assignment Example Extrusion rates of twenty thousand bricks per hour are what modern brick manufacturers work with. Solid bricks used are of the size 215mm x 102.5mm x 65 mm and weighs 3 kg. But this varies from one region to the other. Harvesting of clay is by bulldozers, scrapers or mechanical shovels. Stockpiles are put to enable the blending of the various types of clay. The clay piles are fed to the primary crushers to reduce the size particle to 3mm or less (Kaushik, Rai & Jain, 2007). Conveyors carry the clay for secondary crushing in the pan mill whose base is perforated the crushed material to pass through (Lingling et al 2005). Clay particles fall between high-speed rollers for grinding. Wet clay is moulded into bricks. For this study the standard size of the manufactured brick is 215mm x 102.5mm x 65mm with a mass 3kg. This is according to the BS EN772 and the BS PAS 70 standard methods of testing. These methods ensure to control the weight, height and quality of the bricks which gives the overall strength. Bricks’ compressive strength varies according to the different qualities of clay material used and the firing method. Bricks made from white clay tend to be lighter and economical when firing. White bricks are fired at a temperature of about 12000C. Black or brown bricks are heavier and require a temperature of between 1500 to 20000C. Fired bricks are tested for strength before allowed on construction site. Compressive strengths of bricks range between 3.5MPa to over 50MPa (Demir 2008). The durability of the bricks cannot be fully determined by compressive strength. If this is done a false picture of may be painted leading to disaster. Clay products used in construction of structures to support heavy loads need thorough testing. One of the best method in the laboratory test of the bricks is to look at close tolerances and strength (Lingling et al