Life safety Essay Example | Topics and Well Written Essays - 1000 words

Life security - Essay Example A few people accept that somebody at the can expressed the fire. The reason for the fire is formally dubious (KRAJICEK, 2014). Mysteriously, the show had no fire device set up. There were 50 fire dousers in store just as 4 bazaar fire engines stopped a quarter mile from the tent. No fire fighters had been allocated to the show. The metropolitan was found to have insufficiencies; notwithstanding, the wrath of the city had been centered around the carnival (KRAJICEK, 2014). There were a huge number of fire code changes because of the occasion, for example the utilization of fire resistant tents, fire dousers were required 50-100 ft just as having CT state police and the neighborhood local group of fire-fighters within reach, at any under tent exhibitions. It too lead to the consume on utilizing pyrotechnic just as fire acts within the sight of crowds with no endorsement by methods for state or nearby grant forms (KRAJICEK, 2014). â€Å"The Haunted Castle at Six Flags Great Adventure† happened to be a spooky house fascination which was at Six Flags Adventure Enjoyment Park in the Jackson Township in New Jersey. It was on the eleventh of May 1984 when 18 adolescent guests inside this fascination just to lose their lives after the manor burst up into flames. Six Flags Great Adventure just as its parent organization, the Six Flags, were accused of murder, blamed for having wildly making demise through disappointment take satisfactory wellbeing measures against the fire. The arraignment argued that there did not have a sufficient dynamic fire security framework, for example, sprinklers and smoke alarms which the blamed had overlooked considerably after rehashed alerts. The charged contended that it was fire related crime and no measures would have helped in sparing lives. They were seen as honest of the issue (Kathleen, 2014). There was reaction from firemen from encompassing 11 networks. Reasons for death were carbon monoxide harming and smoke inward breath. The flames lead to a few other frequented house

How to Format an Ebook for Kindle

Step by step instructions to Format an Ebook for Kindle Congrats!  You’ve completed your book.  If you’ve cleaned your original copy and had it altered, you’re prepared to distribute on Kindle.  Not much in life is free any longer, yet distributing a Kindle book is.  You can design a Kindle book yourself and transfer it to Amazon for no charge.  Here’s how. To begin with, SAVE your composition as another doc so you’ll have a duplicate of the first.  You won’t have the option to utilize the Kindle form for whatever else once you’re done. Edges ought to associate with .5 top and base, .8 for left and right edges. Don’t utilize more than three or four line spaces to isolate content beyond what that can make content break to another page on littler perusers, for example, I-Phones. Use text dimensions of 16pt or littler a title with a great deal of content can without much of a stretch go to a subsequent line. Make certain to incorporate a cover sheet and brief copyright notice. Showcasing tip:  If you’ve composed different books, you can remember them for a â€Å"Also Choice: you can make the part titles in the Table of Contents into interactive connections Don’t incorporate page numbers or page breaks-simply let the content sudden spike in demand for.  Otherwise, the completed item will be a wreck!  You can, be that as it may, embed page breaks toward the finish of sections. Don’t include headers or footers. Amazon typically indents sections during designing, so I recommend not including any.  But they now and again change their procedure.  If your last transferred adaptation doesn’t show indents, .3 is a decent indent for passages. Incorporate a line space between each section for somewhat more â€Å"white space.†  Also, shorter passages are all the more outwardly engaging on a Kindle peruser or I-Phone than longer ones. When you’ve completed the process of arranging (and spellchecking!), spare the document so you have a last duplicate for Kindle, at that point spare it again TO A DIFFERENT FOLDER as â€Å"Web Page, filtered.†  If you don’t spare it to an alternate envelope, Word will consequently change the doc you just chipped away at into the html record, and afterward you won’t have the first (which you may jump at the chance to use to make an EPUB rendition or PDF later). At that point page through the html record to ensure it looks alright (utilize the Paragraph instrument on the toolbar to check the quantity of line breaks between sections).  Go to Amazon’s Bookshelf (https://kdp.amazon.com), click on â€Å"Create a New Title,† and adhere to the guidelines to transfer the book.  You can likewise utilize the Cover Creator device to make a spread by then. After you transfer the inside of the book, BE SURE TO PREVIEW IT utilizing the Amazon previewer.  There will most likely be blunders, and perusers who compose book audits on Amazon are not constantly kind about grammatical mistakes or organizing mistakes in the books they read (this is the reason altering is so significant).  You can fix and re-transfer it the same number of times as you have to so as to make it great.  Remember, you’re making your notoriety for being an essayist with each book you distribute. Good luck!  And Happy Writing!

Unbiased Report Exposes the Unanswered Questions on Top Five Feminist Persuasive Essay Topics

Unbiased Report Exposes the Unanswered Questions on Top Five Feminist Persuasive Essay Topics Key Pieces of Top Five Feminist Persuasive Essay Topics It's highly important to stay informed about the present events. The topic ought to be a present event or scenarios which are commonly happening in our surroundings today. Research will guarantee that you're ready to spell out your point of view to your audience in the ideal light. Top Choices of Top Five Feminist Persuasive Essay Topics Perform extensive research on the subject of your choice and make an impressive persuasive speech that individuals will remember for long. It is crucial to figure out the advantages and disadvantages of this issue and choose which side will profit from your advocacy. According to bullying articles, if enough kids stand as much as a bully he'll normally be made to stop. Every writer who tends to execute a fantastic persuasive speech must think about a very good topic beforehand. For one to ha ve the ability to earn an excellent persuasive speech, an individual must pick a topic that the listeners can relate to. You don't need to speak about something political when you're supposed to deliver your persuasive speech to 5-year-old children. Odds are, other individuals also feel the identical waywhich usually means it would earn a compelling topic for a persuasive speech. In understanding how to compose a business letter, make sure it elicits the desired outcomes. You may believe that choosing persuasive speech topics is a bit of cake. Since you are able to see, understanding how to compose a business letter is pretty easy. The company letter needs to be written in block style. To be able to prevent that from happening, below are some pointers about how to choose the finest persuasive speech topics. You need to supply an impressive description of the topic revealed, thus pick the one of which you are able to supply an outstanding visualization to be able to persuade an audience. Our topics are good since they won't leave listeners indifferent. A number of the topics also fall into ot her categories and we've posed the topics as questions so that they are easily adapted into statements to fit your own viewpoint. The Good, the Bad and Top Five Feminist Persuasive Essay Topics The reader ought to take the author's side by the close of the reading. There are several intriguing topics that could be become a persuasive essay if you take the opportunity to consider about doing it. Watching the news gives you a very good selection of topics to select from. The speaker must not merely pick a suitable topic, in addition, he needs to accumulate a framework around that topic and fill it with the most suitable content. It's best in the event you choose a topic in which you get a genuine interest in as you'll be doing plenty of research on it and if it's something which you take pleasure in the procedure will be significantly easier and more enjoyable. Ok, I Think I Understand Top Five Feminist Persuasive Essay Topics, Now Tell Me About Top Five Feminist Persuasive E ssay Topics! For some, you'll locate comments to provide you suggestions on how to proceed with the topics for persuasive speech. Topics that you're familiarized with will make it less difficult to get ready for the speech. While it can be hard to select from such a number of persuasive speech topics, consider which of the above you've got the most knowledge of and can argue your opinion on. When you get a good idea for a speech topic, researching it is going to be fun and simple. It's important to understand that essay topics are just basic ideas that leave you pondering a notion that might be a huge deal to another person. In exactly the same time, you can get a popular topic, but just in a situation, you've got something new and important to say. Remember your essay shouldn't be a string of jokes, it's a narrative it ought to have a start, middle and the end. You must be sure the video or movie is copied to the identical folder as the power point presentation in order in order for it to work also. Key Pieces of Top Five Feminist Persuasive Essay Topics As soon as you know the effortless formula for choosing your topic, then you are going to have a less difficult time researching and writing your speech. Possessing the most effective informative speech essay ideas is not sufficient. Naturally, giving an amazing persuasive speech requires more than simply selecting a very good topic. Finishing a superb persuasive speech takes time and energy. The Appeal of Top Five Feminist Persuasive Essay Topics To begin with, if you're arranging a persuasive speech, you ought to think about a topic that may create mental pictures in the minds of your audience. You must know of what you're encouraging your audience to do, thus pick the topic that meets your craved outcomes. For instance, an excellent speech topic may not be in a position to hold an audience's attention if it's not structured and organized properly. One other important component when picki ng a persuasive speech topic is to select a topic that could provoke your audience a little.

Cyber Crimes and Juvenile Criminal Behavior - 744 Words

What drives people to commit crimes can be anything from financial instability to psychological issues. Specialists have long tried to explain what lies beyond the actual crime act and have been further challenged by the emergence of the technological era. In a time when societies depend alarmingly on computers, digital crime can no longer be confronted the same as regular offences because they are being played on an entire different level. It is our belief that each of the existing theories which thrive to offer an explanation for regular crime, subsequently digital crime is relevant only within certain types of crime. That is to say that the nature of it, be it identity theft, Internet coordinated attacks, online child pornography, etc. gives one certain theory rather than it does to the other more relevance. However, we have found that social process theories may provide more insight into digital crime than its fellow theories. Social process theory argues that there is a causal r elationship between society and criminal behavior. That is to say that social inequality, lack of quality of life due to unemployment issues, etc. may determine an individual to act criminally. That, and because computers lay more opportunities for injustices to be committed, underlines the relevance of the theory. For example, an individual with tendencies for child pornography may repress his behavior on regular, day to day basis because of fear of being caught. However, the Internet makes itShow MoreRelatedCja 484 Entire Class Week 1 – 5 All Assignments and Discussion Questions1869 Words   |  8 PagesDownload http://acehomework.com/CJA-484-Full-Course-Criminal-Justice-Administration-Capstone-A-45567.htm If You Face Any Problem E- Mail Us At JohnMate1122@gmail.com Week 1 Individual Assignment Criminal Justice Trends Paper Select one of the components of the criminal justice system (law enforcement, courts, or corrections). Write a 1,400- to 1750-word paper in which you evaluate past, present, and future trends of the criminal justice component you select. Discuss the budgetary andRead MoreCja 484 Entire Course1853 Words   |  8 Pagescom/shop/cja-484-entire-course/ CJA 484 ENTIRE COURSE CJA 484 ENTIRE COURSE, CJA 484 (CRIMINAL JUSTICE ADMINISTRATION CAPSTONE) ENTIRE COURSE Week 1 Individual Assignment Criminal Justice Trends Paper Select one of the components of the criminal justice system (law enforcement, courts, or corrections). Write a 1,400- to 1750-word paper in which you evaluate past, present, and future trends of the criminal justice component you select. Discuss the budgetary and managerial impact that futureRead MoreJuvenile Delinquency Act ( Jda ) And Young Offenders Act1260 Words   |  6 PagesJuvenile delinquents, individuals who are under 18 and have committed a crime, have been sentenced in a variety of procedures throughout the years. This may occur for various crimes such as theft, sexual assaults, etc. Youth Criminal Justice Act (YCJA), a part of Canadian Legislation, determines the process of prosecution for youths under the Canadian Criminal Justice system. This has assisted several young adults reintegrate into society. It contains a set of definitive purposes and principles toRead MoreBehavioral Analysis Unit1076 Words   |  5 Pagesis what makes a criminal suceptible to committing that particular crime; or why was that person targeted as a victim. This question has sparked many deba tes within the criminal justice field, which is the reason the Behavioral Science Unit was created by the Federal Bereau of Investigation. In certain cases, knowing how a criminals mind operates, will help lead an investigation in the right direction in order to successfully arrest the correct perperatrator. Analyzing a criminals mind, is learningRead MorePolice Department Role And Functions1161 Words   |  5 Pagespolice agencies. Patron, traffic, juvenile services, intelligence and undercover, and special operations are just some of the various functions of police agencies. There are many differences between the functions of the police agencies and the federal, state, and the local levels. There are reasons of why you need to have various functions and roles of policing in any community. There are a few various functions of police agencies such as patrol, traffic, juvenile services, intelligence and undercoverRead MoreThe Issue of Cyberbullying1694 Words   |  7 Pagesï » ¿ Cyber bullying A Criminal Offense Introduction Should cyberbullying be considered a crime? What are the punishments for cyberbullying? What kinds of behaviors are categorized as cyberbullying? This paper reviews those issues and provides supporting literature. Thesis: Cyberbullying has become far more than a nuisance and a distraction in public schools and hence strict rules should be enacted to deter cyberbullying. When a state legislature passes a criminal law in order to dissuade studentsRead MoreJuvenile Delinquency And Its Impact On Society1894 Words   |  8 PagesJuvenile Delinquency has been a major issue challenging various law enforcement professionals and sociology researchers around the world. Acts of delinquency committed by the juvenile sector particularly disrupts the social order of an egalitarian society where individual freedom is a primary societal goal. The bringing up of juveniles on the right social path requires the effort of the overall society, local community, and the family. There have been many effor ts made in the U.S. to control juvenileRead MoreEssay on Social Control of Cyber Space1885 Words   |  8 PagesSocial Control of Cyber Space Our nations infrastructure is daily becoming much more of an abstract environment due to the use of organized cyber criminals hacking away at our super computer information systems. They are generating unpredictable challenges for law enforcement in discovering the unethical abuse on computer systems and a concentration on the young topic of cyber terrorism threatening our criminal justice system. Our law enforcement continues to invent newer methods to functionRead MoreDo You Think Violent Video Game Exposure Effect The Behavior Of Children?1244 Words   |  5 PagesDo you think violent video game exposure effect the behavior of children? Introduction Studies show that exposure to violent video games affects the behavior of children.Some have vandalized, beat someone up, took part in bullying someone.As many as 97% of US kids age 12-17 play video games, contributing to the $21.53 billion domestic video game industry. More than half of the 50 top-selling video games contain violence. Violent video games have been blamed for school shootings, increases in bullyingRead MoreEssay about Schools and Parents Must Be Held Accountable for Bullying1709 Words   |  7 Pages Bullying and cyber-bullying have increased tremendously in past six years. With the increased popularity of Facebook, bullies are finding a new way of tormenting victims. Suicide is the third leading cause of death in teens, with bullying being one of the leading causes. Legal standings on who is accountable have not been clear and when cases are brought forth the infrequent use of laws holding parents and schools responsible is glaring. It is time to make bigger stride s on holding parents and school

Foreign Aid - 3759 Words

EFFECT OF FOREIGN AID IN KENYA 1. Introduction Foreign aid is usually associated with official development assistance, which in turn is a subset of the official development finance, and normally targeted to the poorest countries (World Bank, 1998). Foreign aid represents an important source of finance in most countries in sub-Saharan Africa (SSA), where it supplements low savings, narrow export earnings and thin tax bases. In recent years the donor community has become more stringent about fiscal discipline and good policies, which has led to freezing of donor funds to governments that do not conform with aid conditionalities. The Kenyan government has experienced such aid cuts in the past. 1.1 Definition The standard definition of†¦show more content†¦A well-designed aid plan can support effective institutions and governance by providing more knowledge and transferring technology and skills. It is recommended to decentralize the aid flows in recipient countries. Money aid is important but idea aid is even more important. Aid can be the midwife of good policy in recipient countries. In poor-policy countries, idea aid is especially more essential than money aid. This implies that in a good-policy environment, aid increases growth via the investment channel whereas in a poor-policy environment, it nurtures the reforms through policymakers training or knowledge and technology transfer. These non-money effects are believed even more important and viable than the money value of aid. Aid works much better where the reform is initiated or internalized by local government rather than when it is imposed by outsiders. Therefore, aid is normally more effective when it facilitates effici ently and timely reforms triggered by the local authority (World Bank, 1998). Foreign aid or (development assistance) is often regarded as being too much, or wasted on corrupt recipient governments despite any good intentions from donor countries. In reality, both the quantity and quality of aid have been poor and donor nations have not been held to account. In 1970, the world’s rich countries agreed to give 0.7% of their gross national income as official international development aid, annually. SinceShow MoreRelatedForeign Assistance For Foreign Aid1553 Words   |  7 Pages The dictionary definition of the term foreign aid is: The administered transfer of resources from the advanced countries for the purpose of encouraging economic growth in developing countries. [Bannock:1988 P.164] However, so as not to confuse foreign aid with the investments of multinational corporations or commercial banks, many economists require foreign aid to meet two distinct criteria: 1) Its objective must be noncommercial from the point of view of the donor and 2) it sh ould be characterizedRead MoreThe Matter Of Foreign Aid1721 Words   |  7 PagesThe matter of foreign aid is complicated. Through our own policies, the policies of international organizations, and assorted agreements with numerous countries, our role in foreign aid has continued to change over the decades to meet the growing needs of the developing and developed worlds. While we try to aid the developing world to the extent of our capabilities, there are several elements to consider – some of which in the past have often been neglected. When providing aid to countries in needRead MoreThe Beginning Of Foreign Aid Essay1505 Words   |  7 PagesIntroduction: 1.The beginning of Foreign Aid All human beings regardless of their background require a set of resources to survive. These are food, water, shelter and clothing in addition to this, healthcare, education and sanitation are also essential for a person’s wellbeing. In 1949 Truman’s Inaugural Address â€Å"we must embark on a bold new program for making the benefits of our scientific advances and industrial progress available for the improvement and growth of underdeveloped areas† raisedRead MoreForeign Aid For Developing Countries2134 Words   |  9 Pagescountry. The failure of foreign aid proves this statement to be false. In a majority of cases where aid is given to developing countries, it simply does not work. They are still in the same situation, if not worse, then they were before they received aid. Foreign aid is a failure for three reasons: the aid does not reach the appropriate people, the aid does not always fix the situation in the long-run, and the aid creates a dependence on bo th the donor country and the aid itself. We have the capabilityRead MoreForeign Aid Essay620 Words   |  3 PagesForeign Aid Foreign Aid, charity, development assistance†¦whatever you call it, it has become a global activity. The assistance is delivered by various means: government-to-government, pooled multilaterally or channeled Read MoreThe Expansion Of Foreign Aid2475 Words   |  10 Pages In the denotation of foreign aid takes many definitions in different literature, but as Tarp provided it is government transfers from donor countries to under developed or poor countries. That is intended for promoting development and reducing poverty, although there may be other aims of giving aid. As there are major trend of foreign aid and most reasonable issues that foreign aid fluctuated in different years, therefore the paper will look back the trend of foreign aid and it’s changes in globallyRead MoreAmerican Foreign Policy And Foreign Aid1366 Words   |  6 PagesAmerican Foreign Policy and Foreign Aid America tends to involved herself in many other countries affairs. This creates large amounts of national debt, war, and in some cases enemies. I believe that the American government should leave other counties alone until they decrease nation debt, decrease unemployment rate, and end our current complications with other countries. For those of you who do not know what foreign policy is, it is the way that America’s government interacts with other countriesRead MoreThe Cons of U.S. Foreign Aid Essay1251 Words   |  6 PagesThe Cons of U.S. Foreign Aid As time progresses humankind seeks to better itself. We strive to make life easier, faster, and more efficient. Currently we have telescopes that can see objects light years away, satellites that can track you around the planet, cars that adjust the seat and steering wheel to separate drivers, and computers that fit in your hand and perform a million calculations a second. But not everyone in this world has this technology. In parts of the world there are peopleRead MoreEssay on The Benefits of Foreign Aid1625 Words   |  7 Pagesmisperception concerning how much of the federal budget is actually set aside for foreign assistance programs. Only one-half of one percent is actually allocated and spent through the agency, stated J. Brian Atwood, head of USAID, at the International Development Conference on January 1995. In addition, U.S. Foreign Assistance levels are at their lowest levels in over 50 years (Ten Questions Commonly Asked About U.S. Foreign Assistance Programs, March 6, 1995). The United States should continue providingRead MoreShould The United States Increase Foreign Aid?819 Words   |  4 PagesStates increase foreign aid? This is a topic that has come up many times in the past years. When it comes to politics and the people themselves, this is a very important debate. This goes much deeper than just losing money or helping a fellow country in need. People are in need to better their country and themselves. We are all here together and aiding in one s growth can change lives all around. There are many reasons why the United States should increase foreign aid and why it is important

Paragraph essay on why the American Revolution started free essay sample

The act also placed tax on Molasses to stop merchants from smuggling It In. Of course the tax was placed onto the colony while they were in a state of financial depression. In response, the Merchants refused to buy luxury British imports, but the rebellion didnt start until the Quartering act and the Stamp act began. The Quartering act was created in 1765. Colonists were told to house, feed, and care for the troops as they came. The act backfired In 1766 when 1,500 troops appeared In New York.The provincial Assembly refused to obey the law, and refused to provide the soldiers with any alms. Because they refused, Parliament said theyd suspended New York Governor and Legislature until 1769, but never carried it out. Soon after, the Assembly agreed to accumulate money to quarter the troops. After that, the Quartering act was avoided in all states except Pennsylvania. The Stamp act began In 1765 when George Greenville raised the taxes on most things In the American Colony. We will write a custom essay sample on Paragraph essay on why the American Revolution started or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Initially he wanted to raise taxes In Britain, but that was out of the question because of the hostile reaction after the Cider Tax. So instead decided to raise tax on the new colony without asking their permission. The colonists responded immediately by debating in the colonial legislatures, creating mob crowds, tarring, and feathering. All in all, the colonists finally showed their displeasure for all the new laws through The Boston Tea Party. The Boston Tea Party was a political protest against the taxes.A group, named the Sons of liberty, came up with the idea to dress as Indians (which didnt fool anyone) and toss all the crates of Tea that came in, into the harbor. The British Government responded harshly, and it grew into the American Revolution as we know it. In the end, the American Revolution got rid of Increasing restrictions placed on the of rebellion, one-third sided with the British, and the last third were all neutral concerning the rebellion and break from Great Britain.

Lost Foam Casting free essay sample

The lost foam casting process offers several advantages over conventional sand casting processes, such as simplified production techniques and reduced environmental waste due to binder system emissions and sand disposal. The process is well-suited for castings with complex geometries, tight tolerances, and smooth as-cast surface finish requirements. When the castings are designed to fully exploit these advantages, cleaning and machining times are dramatically reduced if not completely eliminated. Therefore, the lost foam casting process is viewed as a value-added process rather than a substitute for sand casting. Lost foam castings are produced by pouring molten metal into a foam pattern contained in a flask filled with loose sand that is compacted through vibration. Generally speaking, a foam pattern is coated with a refractory slurry and dried before being placed in the flask and surrounded by large grain fineness sand. The foam pattern degrades immediately after molten metal is introduced, leaving a casting that duplicates all features of the foam pattern. We will write a custom essay sample on Lost Foam Casting or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The degradation products are vented into the loose sand. In lost foam casting process, mold filling, thermal transport, and solidification are strongly influenced by the foam pattern degradation. There are three phenomena which are inherent in lost foam casting process: slow molten metal flow, reducing atmosphere, and degradation products. The first and second phenomena help reduce oxides or slag defects. The last one, however, may become casting defects if they remain in the cast parts. To improve lost foam casting design, it is ssential to understand the interactions between the foam pattern and molten metal as well as the displacement of degradation products. History The first patent for an evaporative-pattern casting process was filed in April 1956, by H. F. Shroyer. He patented the use of foam patterns embedded in traditional green sand for metal casting. In his patent, a pattern was machined from a block of expanded polystyrene (EPS), and supported by bonded sand during pouring . This process is now known as the full mold process. In 1964, M. C. Flemmings used unbonded sand for the process. The first North American foundry to use evaporative-pattern casting was the Robinson Foundry at Alexander City, Alabama. General motors first product using these processes was the 4. 3L, V-6 diesel cylinder head, which were made in 1981 at Massena, New York. A study found in 1997 that evaporative-pattern casting processes accounted for approximately 140,000 tons of aluminum casting in the United States. The same survey forecast that evaporative-pattern casting processes would account for 29% of the aluminum, and 14% of the ferrous casting markets in the near future. Definition Definition| A casting process whereby the pettern is made of polystyrene foam and is vaporized when the mold is fill with molten metal| Lost form consist of first making a foam pattern having the geometry of the desire finish metal| Expanded polystyrene casting use a mold or sand park around a polystyrene pattern that vapourizes when the molten metal is poured into the mold| Evaporating pattern casting (lost foam) : this process is also know as lost pattern casting under a trade name â€Å"full mold process†, it use a polystyrene pattern which evaporate upon contact with molten metal to form a cavity for the casting| Lost foam casting, where the mould cavity is filled with polystyrene foam (the ‘full mould’ process) , is a special case. | What is â€Å"Lost Foam†? The Lost Foam casting process originated in 1958 when H. F. Shroyer was granted a patent for a cavity-less casting method, using a polystyrene foam pattern embedded in traditional green sand. The polystyrene foam pattern left in the sand is decomposed by the poured molten metal. The metal replaces the foam pattern, exactly duplicating all of the features of the original pattern. Like other investment casting methods, this requires that a pattern be produced for every casting poured because it is evaporated (â€Å"lost†) in the process. Schematic of lost for casting Process The essential steps of the lost foam casting procedure are: 1) The execution of patterns, 2) Execution of moulds 3) casting the alloy. Execution of Patterns: A pattern is made from  polystyrene foam (Expanded Polysterene), which can be done many different. What is Expanded Polystyrene? Expanded Polystyrene in its broadest sense is a rigid cellular plastic which is found in a multitude of shapes and applications. Raw Material Manufacturing: Expanded polystyrene (EPS) is the most commonly used foam pattern, it can be produced by bead pre-expansion into polystyrene (PS) beads that are ready for moulding. PS precursors are formed from ethyl benzene through an aluminum catalyst with benzene and ethylene obtained from crude oil and natural gas [Shivkumar, 1994]. Ethyl benzene is then converted to styrene at high temperature with nitrogen gas and iron catalysts. It forms polystyrene when exposed to a peroxide catalyst and polymerized in a water solution [Goria et al. , 1986]. These unexpanded beads have a density of 600 g/l (38 pounds per cubic feet (pcf)) and they are expanded 20~50 times with heat at 100 oC until the desired density is reached [Kanicki, 1985]. Polystyrene (PS) MOLECULAR FORMULA: The C=C double bond in each monomer is transformed into a C-C single bond in the polymer. | Properties: ease of forming, clarity, low heat transfer, good thermal insulation. Density: 1. 03-1. 06 g/ccStatistic: In 1999 PS usage as a plastic bottle resin was essentially nil. | Description: Polystyrene can be made into rigid or foamed products. It has a relatively low melting point. Packaging applications: Plates, cups, cutlery, meat trays, egg cartons, carry-out containers, aspirin bottles, compact disc jackets Recycled products: Thermal insulation, light switch plates, egg cartons, vents, rulers, foam packing, carry-out containers Raw Material Manufacturing: Expanded Polystyrene (foam)  is obtained from expandable polystyrene (beads), which is a rigid cellular plastic which contains an expansion agent. Expandable polystyrene is therefore obtained from oil as can be seen from the diagram. The EPS Manufacturing Process is inextricably linked with the process described in the last section, which brought us from the oil well to expandable polystyrene, now we will see what happens in the transformation process that leads us to Expanded Polystyrene foam parts. We have seen that the raw material is obtained through a chemical process. The next process involves the use of physics and the conversion process is carried out in three stages. 1st stage   PRE-EXPANSION: The raw material (beads)  is heated in special machines called pre-expanders with steam at temperatures of approximately 215-f. The density of the material falls from 40lbs/cu ft to values of usually between 1 ~ 2lbs/cu ft. During the process of pre-expansion the raw materials hard beads turns into cellular (foam) plastic beads with small closed cells that hold air in their interior. 2nd stage   INTERMEDIATE MATURING AND STABILIZATION: On cooling, the recently expanded particles form a vacuum in their interior and this must be compensated for by air diffusion. This is how the beads achieve greater mechanical elasticity and improve expansion capacity, something very useful in the following transformation stage. This process is carried out during the materials intermediate maturing in aerated silos or mesh bags. The beads are dried at the same time. 3rd stage   EXPANSION AND FINAL MOLDING: During this stage the stabilized pre-expanded beads are transported to molds where they are again subjected to steam so that the beads bind together. In this way large blocks are obtained block molding   (that are later sectioned to the required shape like boards, panels, cylinders etc. ) or products in their final finished shape shape molding. Execution of moulds and casting alloy The basic steps to the process include: A foam pattern and gating system are made using a foam molding press * The foam pattern and the gating system are glued together to form a cluster of patterns * The cluster is coated with a permeable refractory coating and dried unde r controlled conditions * The dried, coated cluster is invested in a foundry flask with loose, unbonded sand that is vibrated to provide tight compaction * The molten metal is poured on to the top of the gating system which directs the metal throughout the cluster and replaces the foam gating and patterns * The remaining operations such as, shakeout, cut-off, grinding, heat treat, etc. are straightforward and similar to other casting processes. The series and major steps in lost foam casting (LFC) What metals can be poured in the Lost Foam process? Generally, all ferrous and non-ferrous materials can be successfully cast using the Lost Foam process. Because the foam pattern and gating system must be decomposed to produce a casting, metal pouring temperatures above 1000 °F are usually required. Lower temperature metals can be poured, but part size is limited. In addition, very low carbon ferrous castings will require special processing. What size range of parts can be produced by the Lost Foam process? Lost Foam castings can be produced in most all metals from a fraction of a pound up to thousands of pounds. Slightly more advanced techniques are used for very large castings. What type of tooling is required and at what cost? Typically, tooling is composed of a split-cavity machined aluminum die that is the negative mold from which the foam pattern is produced. The tooling is highly specialized and must be constructed by experienced tooling manufacturers familiar with the requirements of the foam molders and foundries. Most tooling for Lost Foam patterns will compare favorably with permanent and die cast tooling. Prototype and simple tools may be in the $3000-5000 range while high-end tooling for complex or very large parts can be in the several hundred thousand dollar range. As a result of the materials used and the process stresses, Lost Foam tools can be expected to have 3 to 4 times the cycle life of permanent mold or die casting tools. What lead times can be expected when ordering a Lost Foam casting? As with all processes, lead times vary greatly depending on part complexity. Generally, 8 to 16 weeks is typical for completed tooling and first castings produced. After casting approval, 6 to 12 weeks is typical for production run startup. Rapid prototyping methods can produce castings in as little as 2 to 3 weeks. What size range of parts can be produced by the Lost Foam process? Lost Foam castings can be produced in most all metals from a fraction of a pound up to thousands of pounds. Slightly more advanced echniques are used for very large castings. What is the cost of using the Lost Foam process? Lost Foam castings are generally more expensive than forged parts, or parts made by other casting processes. The value inherent in the Lost Foam process v ersus other processes is seen in tighter tolerances, weight reduction and as-cast features which all results in less machining and cleanup time. Many castings that require milling, turning, drilling and grinding can be made in the Lost Foam process with only . 020† . 030† of machine stock. It is imperative that the features to be cast are discussed by all parties to determine the net finished product cost. What quantities need to be made to make the Lost Foam process practical? The answer, simply, is not as many as you would think. Tooling amortization is a key factor in this determination. Potential overall savings for your application will aid in your decision. Generally, 500-1000 pieces per year is the minimum production run to be economical. Prototyping runs, however, may be as few as 3-5 pieces for Fabricated Foam patterns or 20-100 pieces for Quick-Cut CNC machined aluminum tooling. Application Lost foam casting  is used mostly for automotive applications. Cast iron, aluminum alloys, steels, nickel and in some cases stainless steel and copper alloys are cast in this process. The flexibility of LFC is useful in making complicated casting assemblies for automotive and other metal cast like cylinder heads, weldments, pump housing, Manifolds for automobile, machine bases, automobile-body-dies, brake component. etc. This simple and inexpensive method is used in hobby foundry work. Examples of product produce from lost foam casting http://www. glmmarine. com/ManifoldArticle. html Superior Marine Manifolds Agricultural Equipment Part / Farm Machinery Part Product Description Detail Feature: Product Name: Agricultural equipment part / Farm machinery part   Materials: Grey iron, Ductile Iron, High Chrome iron, resistent ironcarbon steels, alloy steels, stainless steels, High Manganese steel   Items: FOB NingBo or Shanghai Place of Origin: Ningbo, China Software for specification drawings: PDF, Auto CAD, Solid work, JPG, ProE   Main production equipments: Wax injection, CNC-machine, machine-center, Heat treatment Furnace lost foam casting for yacht gas piping Specifications 1). lost foam casting 2). reliable product quality 3). on time delivery 4). excellent after-sale service 5). 3D design It is designed for the yacht or the ships gas exhaust piping. Materials: pig iron 250 Surface treatment: galvanizing, and spray-paint Weight: 19. 5 KG Color: black Process: lost foam casting Dimensions:360mm*167mm*102mm Certificate: ISO9001:2000 Advantages * Foam is to carve glue and manipulate Can be used for precision castings of ferrous and non-ferrous metals of any size. * Fewer steps are involved in lost foam casting compared to sand casting. * Core making is eliminated. * Binders or other additives and related mixing processes are eliminated. * High dimensional accuracy can be achieved and thin sections can be cast (i. e. 3 mm). * There is lower capital investment. * The flasks used are less expensive and easier to use because they are in one piece. * The need for skilled labor is reduced. * Multiple castings can be combined in one mould to increase pouring efficiency. * Lower operating costs can be achieved for appropriate castings. Complex castings, particularly internal sections, which require high dimensional accuracy and have thin sections, can be produced very cost effectively in comparison with to conventional sand moulding processes. * Fettling and machining is minimized due to high dimensional accuracy and the absence of parting lines or core fins. * The shakeout process is simplified and does not require the heavy machinery required for bonded sand systems. * High levels of sand reuse are possible. As little as 1-2% of the sand is lost as a result of spills. Periodically a portion of sand may need to be removed or reclaimed to avoid the build-up of styrene. * Complex components can be formed where other casting processes would require multiple components to be assembled. Excellent dimensional tolerances for precision casting. * Lower production cost than traditional Green Sand casting. * Castings can be made from 1 pound up to thousands of pounds with no size limitations. * Lost Foam is an environmental ly friendly process. * The sand is un-bonded and can be recovered and re-used at a low cost. * There is lower capital investment. Disadvantages * pattern costs can be high for low volume application * patterns are easily damaged or distorted due to their low strength. If a die is used to create the patterns there is a large initial cost * The pattern coating process is time-consuming, and pattern handling requires great care. Good process control is required as a scrapped casting means replacement not only of the mold but the pattern as well. What type of tooling is required and at what cost? Typically, tooling is composed of a split-cavity machined aluminum die that is the negative mold from which the foam pattern is produced. The tooling is highly specialized and must be constructed by experienced tooling manufacturers familiar with the requirements of the foam molders and foundries. Most tooling for Lost Foam patterns will compare favorably with permanent and die cast tooling. Pr ototype and simple tools may be in the $3000-5000 range while high-end tooling for complex or very large parts can be in the several hundred thousand dollar range.