Leonardo Da Vinci Essays (252 words) - Renaissance Painters

Leonardo Da Vinci Leonardo da Vinci was one of the greatest inventor-scientist of recorded history. His genius was unbounded by time and technology, and was driven by his insatiable curiosity, and his intuitive sense of the laws of nature. Da Vinci was dedicated to discovery of truth and the mysteries of nature, and his insightful contributions to science and technology were legendary. As the archetypical Renaissance man, Leonardo helped set an ignorant and superstitous world on a course of reason, science, learning, and tolerance. He was an internationally renowned inventor, scientists, engineer, architect, painter, sculptor, musician, mathematician, anatomist, astronomer, geologists, biologist, and philosopher in his time. Born in 1452 as an illegitimate son of Ser piero da Vinci, da Vinci was sent to Florence in his teens to apprentice as a painter under Andrea del Verrocchio. He quickly developed his own artistic style which was unique and contrary to tradition, even going so far as to devised his own special formula of paint. His style was characterized by diffuse shadows and subtle hues and marked the beginning of the High Renaissance period. Like many great original efforts, da Vinci's artistic style was largely unpopular for the next quarter century. Later Da Vinci became the court artist for the duke of Milan. Throughout his life he also served various other roles, including civil engineer and architect (designing mechanical structures such as bridges and aqueducts), and military planner and weapons designer (designing rudimentary tanks, catapults, machine guns, and even navel weapons). Da Vinci's creative, analytic, and visionary inventiveness has yet to be matched.

Negotiations and cross cultural considerations Essay Example

Negotiations and cross cultural considerations Essay Example Negotiations and cross cultural considerations Essay Negotiations and cross cultural considerations Essay Negotiations Negotiation steams from the Roman word negotiari meaning to carry on business. It was true for ancient Romans as it is for businesspersons of today that negotiations and business involves hard work. (Hendon, Hendon Herbig 1996) Negotiations are a frequent part of international business. Parties involved in a negotiation face different problems in reaching a successful outcome. When parties have different cultural backgrounds the faced problems becomes even more complex. Negotiation is a process to manage relationships. It is a basic human activity that xists between husband and wife, children and parents, employers and employees, buyers and sellers and between business associates. In business relationships the stakes are often high and therefore it is necessary to plan an prepare the negotiation more carefully. (Ghauri 2003) When business parties negotiate the purpose is to influence the process so they can get a better deal rather than to accept or reject what the other party is offering. Negotiations are treated as an important part of developing business in any market. The estimated time spent in negotiations is 50 er cent of the total working time. (Fraser Zarkanda-Fraser 2002) Business negotiations differ from other negotiations. In business negotiations it is considered the most challenging communication tasks (Woo Prudhomme 1999) and are more and more considered a crucial part of the managerial process, which is highly relevant to the implementation of business strategy (Ghauri 2003) Successful negotiations require understanding of each partys culture and may also require adaptation of the negotiating strategy so it is consistent with the other partys culture. Hollensen 2001) Negotiations is important, especially in business to business markets where companies build long term relationships. Establish, maintain and foster relationships are of prime importance for the market transaction to take place (Ghauri 2003). Due to globalization, many companies have also set up overseas branches and many managers are facing greater problems in negotiating with local sales office often manned with local managers. It is therefore, interesting to investigate how culture interfere the negotiation behaviour of parties coming from different countries and cultures. Cross-cultural Considerations The different social behaviour patterns international negotiators encounter have been broadly and loosely defined as cultural differences. Furthermore, there is limited research on the relationship of culture to negotiation, most probably because 0T tne Innerent OITTlcultles In tne metnoaology 0T stuaylng tnese proDlems. I nere are, however, four approaches taken by negotiation literature implying a connection between culture and behaviour : culture as a learned behaviour, culture as shared value, culture as dialectic, and culture-in-context. Robert 1991) Each approach is conceptually different, and this implies that it is important to understand these differences during the conduct of negotiation of international partnerships. Learned behaviours focuses on negotiating etiquette, that is the use of proper social customs, such as whether or not negotiations are conducted over dinner or not. Most books on how to negotiate abroad are written based on this approach to international negotiations. Researchers following this approach observe that certain types of behavior are common to certain cultures, and attempt to catalog those behaviors. Some of the earliest investigations into cultural differences take this form. However, this approach has difficulty accounting for individual variations in negotiation styles. (Robert 1991) Culture as a shared value focuses on the negotiation process. For this approach the assumption, simply put, is that thinking precedes doing, and that ones thinking patterns derive from ones cultural context. Researchers try to discover the basic values and attitudes of a particular culture, and then to deduce patterns of negotiation behavior from those basic beliefs. The shared value approach typically ssumes homogeneity in the cultures dominant or commonly-held cluster of values. This approach can potentially lead to failed negotiations if the negotiators themselves do not follow the rules of perception in the eyes of their counterparts on the other side of the bargaining table. Whereas the learned behavior approach merely describes differing behaviors, this approach attempts to explain those behaviors. However, this approach also has difficulty in accounting for individual variations in negotiation styles. Robert 1991) A third approach understands cultures as shaped by the dialectic tension between aired, opposing values. Cultures can be seen for example as shaped by the tension between the values of collectivism and individualism, or pragmatism and idealism, or spirituality and materialism. This approach has the advantage of being dynamic where the previous approaches were static. It can explain changes in a culture over time as shifts in the balance between opposing values. And it can explain individual variations in negotiating style as different personal interpretations of the same basic tensions. Robert (1991) argues that while this approach is more interesting to the cademic, it is less helpful to the negotiation practitioner, since it gives less definite answers to what to expect in a given circumstance. The culture-in-context model is a complex quintessential integration of the current understanding of human behaviour by systems theorists, such as Max Weber (1947), that human behaviour is not dictated by single cause explanations. Therefore, according to this model, the international negotiator needs to understand that even within such homogeneous cultures as the Japanese, complex human behaviour snou a De expected. Negotlatlng Denavlor wlll vary aepen01ng upon a w10e range 0T factors, such as the participants age, religion, class, or character, relations of authority, institutional setting, the opponents behavior, and even the presence or absence of an audience (Robert 1991) Academic analysts currently favor this approach. Its complexity gives more nuanced explanations. However this same complexity makes it even less useful as a predictive tool, and so as a useful guide for negotiation practitioners. The perceptions that different cultures have concerning trust are an important issue n the conduct of any negotiation. No contract can be drawn that covers every conceivable situation. Parties to any venture, whether international or domestic, must have a level of trust in each other. Humans by their very nature are opportunistic, and to the extent that parties cannot trust each other dictate the level of contractual constraints to prevent opportunistic behaviour. Trust in international negotiations manifests itself in the transaction cost theory, which suggests that some cultures are more trustworthy and less opportunistic than others. Obviously, strategic alliances egotiated between cultures with differing levels of transaction costs carry increased risk. Cultural diversity is not a simple or trivial issue. Understanding cultural differences is critical in the negotiation and operation of any international strategic alliance. Approaches which rely on simplified notions of culture and rational choice theory are attractive in part because they offer determinate accounts of negotiation behavior and relatively simple predictive models. Robert (1991) cautions however that this appeal should not prevent us from undertaking studies which rely on rather ore sophisticated notions of culture. Such approaches are messier but are potentially more accurate and ultimately more rewarding. Erikson, E. H. (1950). Childhood and Society. New York:Norton. Ghauri, Pervez N, (2003), International business Negotiations- 2nd edition, Oxford, UK:Elsevter, pp 3-22. Hollensen, Svend (2001), Global marketing A market-responsive approach- 2nd edition, Harlow, England: Pearson Education Limited. Hendon, Donald W; Hendon, Rebecca Angeles and Herbig, Paul (1996), Cross-cultural Business Negotiations, Quorum Books, Westport, USA Fraser, Campbell and Zarkanda-Fraser, Anna, (2002), An exploratory investigation into cultural awareness and approach to negotiation of Greek, Russian and British Managers, European business review, vol 14, no. 2 , pp. 111-127 Woo, Hong Seng and Prudhomme, Celine (1999), Cultural characteristics prevalent in the Chinese negotiation process, European business review, vol. 99, no. 5, pp 313-322 Rooert JanoslK 1), RetnlnKlng tne culture-Negotlatlon LlnK In Negotlatlon I neory and Practice, eds. J. , Cambridge, pp. 235-246 Weber Max. (1947), The Theory of Social and Economic Organization. New York: Free Press.

How Students Can Leverage Part-Time and Volunteer Work - Guest Post by Gary Ryan

How Students Can Leverage Part-Time and Volunteer Work - Guest Post by Gary Ryan The following is a guest post by Gary Ryan, founder of Organisations That Matter. Edited by Brenda Bernstein, The Essay Expert. Summer vacations (or â€Å"holiday seasons† as they say Down Under), are terrific for many reasons. They present an opportunity to catch up with friends and family as well as to relax. For many students, summer means a chance to earn money and/or volunteer (especially if you aren’t taking extra classes). Unfortunately, many students don’t take full advantage of their holiday work. Too often I hear things like, â€Å"I’m just a check-out operator,† or â€Å"I just work at a cafà ©,† or â€Å"I just provide meals to homeless people.† There is no such thing as â€Å"just† a part time job- not if you are prepared to consider the employability skills that you are developing while doing your work! Below is a short list of ten employability skills that part time / volunteer work develops: 1. Communication skills 2. Problem solving skills 3. Initiative 4. Teamwork 5. Technology skills 6. Planning and organizing skills 7. Service excellence skills 8. Leadership skills 9. Learning skills 10. Self-management skills Let’s look at some examples of how you might develop these skills: 1. Communication If you communicate with your boss, other team members and/or the general public, then you have the opportunity to develop communication skills. Here’s a tip: Good communicators are good listeners †¦ which also means that you are good at asking questions. So, develop your questioning skills and your communication skills will skyrocket! 2. Problem solving Problems occur all the time. In every job. A computer won’t work. Another staff member didn’t turn up for their shift. The delivery hasn’t arrived and customers are waiting for their orders. The list goes on. Each of these examples is a wonderful opportunity for you to consciously practice your problem solving skills. Not only that, but you can create a bank of stories about how you solve problems. Can you imagine any of your future employers not wanting a problem solver? Neither can I! 3. Initiative Showing initiative is doing something helpful without having been asked. Every time you see that something could go wrong (like someone slipping on a banana peel) and you take action to stop that from happening (like picking up the banana peel) you are showing initiative. Opportunities to demonstrate initiative are everywhere. Keep your eye out for them and grasp them with both hands when they pop up. They also create great stories that can be used in interviews. 4. Teamwork There is hardly a job that exists that does not involve teamwork. Even if you work alone, you are probably still part of a team. Imagine an interview when you are asked about your experience of working in teams. If you’ve covered a shift for a teammate, taught someone something, or helped out in some other way, you will have a great answer to this question! 5. Technology Technology skills don’t just include using electronic devices such as computers and scanners. Using technology can mean writing on whiteboards, driving forklifts (providing you have a license) and whatever else you have to use to do your job. If you volunteer planting trees, the shovels, picks and other tools that you use are all forms of technology. By having a range of stories about your technological capacity, you can demonstrate your adaptability and ability to learn quickly. Most students don’t even think about these things as being relevant to their future. But, they are! 6. Planning and organizing In whatever work you are doing, show up on time and meet your deadlines. Employers expect it. Practice it and practice it now. 7. Leadership For those of you who have responsibility for a team or other staff, how do you treat the people you lead? What are your mental models about leadership? How are your personal values reflected in how you lead? Conscious thought about these questions can create wonderful leadership experiences for you as well as the opportunity to make relatively â€Å"safe† mistakes. Think about your personal theory about formal leadership. Try it out. See if it works. Learn how to lead by doing it when the opportunity arises. 8. Learning Part time and volunteer work always involves learning one or more of the following: technical skills policies and procedures cash management processes customer service procedures people’s names how to work in a team how to communicate the company mission / vision This list could go on. The point is, notice what you have to learn to do your job. You’ll have a mountain of examples to share in an interview! 9. Service excellence No job is worth its salt if you aren’t able to practice developing your service excellence skills. Quite simply, service excellence is like oxygen. In any job, we can’t live without it. The simplest and best practice to adopt is, â€Å"Everyone is my customer: my boss, my colleagues and my customers.† If you wouldn’t choose to be a customer of yourself, then you need to improve your skills in this area or you will likely â€Å"suffocate† your career. 10. Self-management In order to consciously practice the above skills you have to practice self-management. You will have all had a challenging on-the-job experience. How did you handle it? How did you overcome any negative experiences? Challenges at work require a significant amount of positive self-talk, time management, problem solving and communication skills. Develop them now! Part-time and volunteer work are goldmines as far as developing your employability skills. Take full advantage of your opportunities. The gold in this sense will come in the future when you get the job that you really want. So, enjoy your time off this â€Å"holiday season†- and make it an even more valuable summer by developing yourself in the workplace! Gary Ryan is the Founder of Organisations That Matter, author of What Really Matters For Young Professionals! and creator of the Yes For Success online platform for creating and executing a life of balance and personal success!

Food science Essay Example | Topics and Well Written Essays - 2500 words

Food science - Essay Example Bacteria require their own chow to produce and increase. There are different kinds of bacteria, which contaminate the food. Each type of bacteria causing food poisoning would be studied along with the symptoms and treatment separately. There are approximately 74 million cases of food poisoning out of which 323,000 hospitalized and nearly 4000 die yearly in the U. S. alone. According to CDC (Centers for Disease Control and Prevention) food poisoning is common in all groups of ages but particularly the children and aged people are most vulnerable to face serious penalties from food poisoning. During 1990 to 1994 numbers of children suffering from food poisoning were approximately 73 million but during the period from1985 to 1989 number of suffering children were 81 million. According to an estimate 400 to 500 children in the U.S die annually from food poisoning. The probability of having food poisoning is in fact very small when the number of food poisoning cases in the population of 21.4 million in Australia. Exact statistics of food poisoning cases are really very difficult to gather because a lot of cases are easygoing and not reported. In the year 2003, the FSIC (Food Safety Information Council) anticipated about more than 4 million Australians experience food poisoning each year. This is obviously a very huge number and this issue needs our deep focus, it also specifies that about 0.03% of meals are infected forms of food poisoning. The most worrying thing about food poisoning is that it can be deadly. Two aged people died by eating infected beef in Victoria in Feb. 2007; another died from food poisoning in hospital this year. These kinds of incidents speed up the need to develop food safety standards. A report published in 2005 reveals that nearly 130 people die from food poisoning every year in Australia. Mostly food poisoning

America's Infrastructure Failing Research Paper

America's Infrastructure Failing - Research Paper Example It is both an actual and metaphorical foundation of society. This has been an issue needing a solution for at least 25 years. An effort was made in the 1990’s but fell short of what was necessary even then. Today the situation is dire according to a study recently completed by the American Society of Civil Engineers. Though a slow economy is often blamed for not having the ability to fund massive projects nationwide, it is that very funding which would immediately improve the economy. A faction in Congress believes strict austerity measures are the answer to the National Debt problem and that the nation cannot afford a stimulus package to supply jobs, repair infrastructure and give the economy a boost. This is the same faction that caused the government to shut down for no reason and don’t acknowledge the failed austerity experiment Europe has been experiencing. It won’t likely be this historically inept Congress that pulls the economy out its slow growth period while building for the future but maybe the public persuade them if the problem is framed correctly, a task President Obama is attempting, again. What’s the cost of an aging infrastructure as opposed to repairing and replacing it? America’s answer has been to patch it as it breaks while other countries are preparing for the future while creating jobs. Following the devastation of Hurricane Sandy along the east coast last year the electrical infrastructure was not worth salvaging. Instead of replacing it with a high tech ‘smart grid’ the same old system was rebuilt. A tragedy brought opportunity but it was an opportunity lost. The Chinese are replacing their electric lines, not because it was something they had to do, it is the smart thing to do. China’s new power lines lose seven percent of its energy after traveling1200 miles. U.S. power lines lose 80 percent over the same distance. Energy loss is expensive. A 2013 infrastructure report complied by the American Society of Civil Engineers (ASCE) predict that by 2020 business could be burdened with an additional $1.2 trillion in the cost of doing business such as problems associated with water main breaks, electric blackouts and shoddy roads which slows traffic and causes vehicle damage. â€Å"If we look at New Orleans alone,† said Assistant Legislative Director for the United Steelworkers Roxanne Brown, â€Å"it was ultimately a failure of infrastructure, the levees that devastated a commanding share of the city in the aftermath of Hurricane Katrina.† Many businesses will never recover. It’s a ‘pay me now or pay me later’ proposition. It’s anybody’s guess how climate change will exacerbate an already critical situation. It’s certain though that the dilapidated, antique infrastructure cannot endure through climate extremes because it’s already been falling apart for decades. The ASCE predicts the total cost to do not hing is prohibitively high, again, 1.2 trillion for businesses and $610 billion for taxpayers. (Justuan, 2013). The nation’s infrastructure report card is in, graded according to facts obtained by ASCE. America’s bridges are narrow and old, many well past their projected lifespan. About one-quarter are deemed â€Å"structurally deficient.† Bridges built during and for another time, the 1950’s and 1960’s, cause traffic congestion because the bridge too often have fewer lanes that

Borrow Pits In Construction Of Road Networks Engineering Essay

Borrow Pits In Construction Of Road Networks Engineering Essay Over the last two decade there has been an unprecedented boom in the Irish construction industry in road infrastructure. It has become a common sight on Irish roads to see countless Lorries carrying materials to these sites ranging from crushed rock, sand, gravel and tarmac. At present these materials are formed from primary aggregates. The use of these primary materials reduces the natural resources of existing quarries. An alternative to this, is the use of borrow pits which will help in the supply of materials requirements both in general fill and aggregates which may help to avoid the use of reserves from established quarries which will help increase the lifespan of these quarries. As with the supply of material, borrow pits could also be used for recycling purposes also because most jobs would have inert materials that would have to be discarded of site to landfill. The term borrow pit is generally utilized by the Contractor when a project requires a larger amount of fill material versus amount of usable material obtained from cut sections. Borrow pits are typically located next to the construction site, and in the ideal situation are soon backfilled with waste materials, such as soft clay, that often have to be removed from the construction area hence the material excavated is borrowed. Normally, large quantities of material, mainly bulk fill, are required over a short time. The author first became involved in the construction of road infrastructure during the construction of the N18 N19 Ballycasey to Dromland Dual Carriageway in early 2000 where there was a lot of import material brought into to the job from nearby quarries and materials that had to go to landfill. From the authors initial research and work experience on various road jobs it was apparent that the use of borrow pits to provide an alternative source of material would be a worthy dissertation topic and that the knowledge gained would be invaluable for future use. Hypothesis The key question that this dissertation will address is Could the use of Borrow pits in the construction of the road network be a benefit Aim To determine if Borrow pits can provide the necessary quality material required for the construction of roads and also provide alternative options for the disposal of inert waste produced on sites other than to landfill. Outline of chapters This dissertation is structured into and comprises of six chapters, which are briefly described as follows. Chapter 1 introduces the reader to the dissertation. Its shows the particular reasons why this topic was chosen. This chapter also outlines the aim, objectives and hypothesis of the dissertation. In chapter 2, the methodologies used to research the topic are discussed. It provides a review of both the primary and the secondary sources utilized for gathering information and the limitations encountered in carrying out the research are also discussed. In chapter 3 outlines the work that is required to ascertain if borrow pits are up to providing the material necessary for the construction of roads. It also looks at site investigation and soil testing. Chapter 2 Research Methodology Introduction This chapter outlines the methods of research which were adopted in relation to the fieldwork research for this dissertation. It explains in detail the various methods of data collection that were used, indicating the methods of primary and secondary data collection methods and any limitations encountered during the research are highlighted. Research Process The proposal for my dissertation began to materialise when looking back on my previous working experiences in the construction industry. One of the main areas of the authors work was involved in road construction. During the initial research the author investigated on the availability of information for his topic and when satisfied, proceeded to expand on this proposal. There was a medium volume of primary and secondary data available for this topic and also from the authors work experience there was a readily available source of primary data. Sources of Information Primary Sources Naoum (2007, p20) states that Primary literature is the most accurate source of information as it publishes original research The author sourced valuable primary information from Conferences, Reports, Government Publications, (for example NRA) and information from his work experiences. Secondary Naoum (2007, p20) states that Secondary literature sources are those that cite from primary sources such as textbooks and newspaper articles The subject of recycling and waste management in the construction is very topical at the present and the author was able to gather a substantial amount of information through secondary sources. The internet played a vital part in the collection of information. Through this median the majority of information was researched. As well as the internet other sources of secondary information was gathered from Publications/Reports Trade Journal and magazines Textbooks The text books on the subject where sourced through the LIT and GMIT libraries . Literature Review Once the literature search was completed a literature review was carried out to choose which material was most relevant to the dissertation. All this literature was placed in a literature file. Much of the material which was web based was stored on a computer file and was not printed out. Research Limitations The author found that he was unfortunately limited as there were not a lot of books published on certain past of the chosen topic. This meant a lot more time was spent searching the internet for information required for the various chapters. Borrow Pit Selection Introduction There a number of factor in the selection of a potential borrow pits Pantouvakis et al said the overall objective in selecting a borrow pit is to determine the most economical and technically efficient location with the minimal impact. the next activity is to establish which are the best sites to develop. The main influences that have to be evaluated include: Technical Considerations Economic Considerations Social and Environmental Considerations A summary of all the main factors to be taken into account is presented in Figure 4.1. This Figure illustrates the large number of potential influences and their interrelationship. The decision to develop one material source rather than an alternative will often require engineering judgement in order to adequately balance the technical, economic, social and environmental considerations. This Section provides guidelines for carrying out an evaluation of technical considerations and presents an introduction to economic influences. Detailed consideration of economic influences associated with developing a material supply strategy for sections of road are reviewed in Section 9. The detailed review of potential social and environmental impacts associated with material resource development is also presented separately, in Section 11. Borrow Pit Site Investigation Introduction Site investigations are primarily carried out in order to establish reliable estimates of the quantities, quality and processing needs of potential road building materials. Quigley For road projects, a principal aim of the site investigation is to classify the suitability of the soils in accordance with Table 6 / 1 from Series 600 of the NRA Specification for Road Works (SRW), March 2000 see appendix A The design of the site investigation must consider the following factors: How much material is required? The investigation should concentrate on identifying sufficient workable material to supply expected requirements. The method of site investigation will probably be influenced by the availability of suitable resources (plant and test equipment). The hardness of the deposits may dictate the method of investigation. The depth and nature of overburden deposits may influence choice of investigation methods (this can be seen later on in the chapter). Borrow pit ground investigations should be carried out at regular intervals across the site. It is recommended that the depth of overburden, and the characteristics and thickness of the workable deposit is investigated on the basis of a 30 m to 50 m square grid. This distance should only be widened if the site is very large and the materials very similar at each test location. Unexpected changes in the ground profile should be examined locally by making additional intermediate investigation sites in the grid. A site plan of each borrow pit to be investigated should be prepared, showing: The main features of the site. The means of access and the pit location with respect to haul road placement for extraction. The location of each site been investigated and investigation borehole should be logged using modern GPS or similar devices. This information will be important when you go to work out the quantity of the resources in each potential site been looked at. This process will be looked at further on in this chapter. Desk top study A desk top study is one of the first steps undertaken when you look at a potential site because it can provide you information already available about a site. (Simons et al, 2002). Within the construction industry, desk studies are well know but are an under-used method of gathering and assessing existing information about a site. Desk studies generally include a visual inspection of the site and its surrounding area (usually called a walkover survey). The desk study examines and draws together existing information from a variety of sources to form an initial appraisal of possible ground conditions. A good starting point is to use OS maps. These allow the site to pin pointed and an accurate grid reference to be obtained. This permits much more accurate references on the geological maps used later, which can be got from the Geological Survey of Ireland, which show existing geological records for the area and also historical maps could be a help. The walk-over survey of a site can give valuable insight into potential ground condition problems (for example slope instability or shallow groundwater) and contamination issues (revealed for example by vegetation dieback). On site visit, local resident can often provide information on groundwater and sources of raw material in the area. The combination of the desk study and the walk-over survey is an extremely cost effective first stage in an investigation. It provides early warning of pote ntial problems and a sound basis for the scope of subsequent, more detail investigation which may follow. The desk study and walk-over survey can also provide early recognition of site issues such as ecology and archaeology which may have implications on site selection. Traditional Ground investigation methods There are number of different types of ground investigation methods available on the market and we will look at some of the most common method used. Trial Pits. Boreholes investigation, Light Percussion Boreholes. Rotary Drill holes. Geophysical Seismic Refraction Method. Electrical Resistivity Method Trial Pits Trial pits are predominantly carried out using mechanical excavators which will give information of the ground while the digging is taking place. Throughout the process photos are taken of the ground conditions and samples of material Quigley (typically 30kg for engineering performance tests) are also taken are specified ground depths. Depending on the excavators reach this will determine depth or if bedrock is reached, Cat 320D digging depth is up to 6.690m (Caterpillar 320D brochures). All field work is carried out in accordance with BS5930.1999. Figure Picture of Trial Pit operation. (Source www.prioritygeotchnical.ie) Figure Pictures of samples taken (Sourced www.prioritygeotchnical.ie) (Quigley) points out that A suitably experienced geotechnical engineer or engineering geologist should supervise the trial pitting works and recovery of samples. It is important that all trial pits are backfilled after testing is completed. See appendix 2 for example of Trial Pit log. Borehole Investigation Light Percussion Boreholes (Shell and Auger) Light percussion boreholes or otherwise known as Shell and Auger boring can be used in all types of soils and is mainly used for depths exceeding that of an excavator. The rig consists of an engine powered winch and tripod frame that is easily collapsed for towing behind a four wheel drive vehicle. The boreholes are usually 150 to 200 mm in diameter and steel casing is typically required throughout most of the hole. Boreholes of 20 to 30m depth are commonly bored in suitable soils, however in mixed soil, depths can vary samples should be taken at ( Quigley) 1.00m intervals or change of strata. See figure 3 for example of rig in working position. Figure Light percussion boreholes rig (Sourced www.southerntesting.co.uk) Boring is achieved by repeatedly dropping an auger, consisting of a steel tube, to the bottom of the borehole. In sands and gravels a valve is fitted to the lower end of the tube to trap the material entering it, this is a shell or sand auger. Any large stones or small boulders encountered can be broken up with a heavy chiselling tool. Large disturbed samples may be obtained, but below the water table the washing action of the shell may remove some of the fine material from sand and gravel deposits. Attachments to the rig allow the use of light rotary drilling equipment that will enable limited investigation of the characteristics of any bedrock encountered. See figure 4. Figure Attachments for light rotary drilling (Sourced Clayton et al,, 1996) Rotary Drill Boreholes Rotary drill rigs come in a variety of sizes from small skid mounted machines to large truck mounted machines. See Figure 5. They use a rotary action combined with downward force to grind away the material in which the hole is made. The primary use of rotary drilling techniques is to investigate rock quality by taking core samples. However, rotary drilling rigs can be used for non core drilling. A destructive tricone (rock roller) drill bit is generally used to advance a non-coring hole. Only the rate of advance and characteristics of the cuttings flushed to the surface by the drilling water give any indication of the strata penetrated. This can be supplement by small disturbed samples recovered from a driven sampler (i.e. SPT sampler). Non core drilling is therefore of limited use, but might be employed through the overburden covering a rippable rock or quarry stone. Figure Rotary drill rig in operation (Sourced www.prioritygeotchnical.ie) Rotary coring involves the use of a water lubricated diamond or tungsten tipped hollow core bit attached to a core sample recovery barrel and a series of hollow drill rods. See figure 6. In weak or fractured rocks better quality core are recovered from larger diameter bits. Some ground investigation drillers have developed a technique for recovering disturbed soil samples by dry drilling with a single tube core barrel, but This practice is not widely used and is less successful in coarse deposits with little plastic clay binder. Example of rotary log see appendix 3. Further information on site investigation drilling and the description of drill cores is contained in BS 5930 Code of Practice for Site Investigations (1999). Figure Layout of a small Rotary core unit. (Sourced Clayton et al,, 1996) Geophysical Exploration This method of investigation is not commonly used as it is not suitable for all ground conditions and there are limitations to the information obtained. The main use of this form of exploration is it can give bedrock and water table levels and it can also detect sub-surface cavities. The two main methods are. Seismic Refraction This method involves the generation of an artificial shock waves in the rock or soil and then records the finding in a series of detecting station which are place across the area been investigated. The detecting stations are known as geophones. This method is often used to detect buried channels and identify bedrock levels. See figure Figure Seismic Refraction Method (Source www.geophysics.co.uk) Electrical Resistivity Method This method involves the driving of four equally spaced electrodes into the ground in a straight line. When this process is done and a current is passed through the outer electrodes and the difference in volts with the inner electrodes is measured. See Figure 8 Figure Electrical Resistivity Method (Source www.discoveryprogramme.ie) Soils Testing The purpose of the soil testing of material from the borrow pits is to Determine the engineering properties of the material. To establish if the material is the same quality throughout. To provide document records of the pit for the clients. In order to fully assess the engineering properties of a borrow pit material it is necessary to have samples tested in a Materials Laboratory. The purpose of testing material is to see if the comply with the specifications of there indented use. The laboratory will use standard testing procedures to classify the samples taken. In Ireland the parameters set out in Table 6 / 1 of the NRA SRW include a combination of the following. Typical tests undertaken are for soils and aggregates Moisture content 10% fines Particle size grading Plastic Limit and Liquid Limit CBR MCV Triaxial Shear Strength Test (Laois County Council 2007) Moisture content Moisture content is the amount of water to amount of dry soil. The method is based on removing soil moisture by oven-drying a soil sample until the weight remains constant. The moisture content (%) is calculated from the sample weight before and after drying tests carried out to B.S.1377: Part 2: 1990 for soils and BS 812: Part 109:1990 for aggregates Figure Soils Oven (Sourced Testing equipment Supply) 10% Fines This test is not too dissimilar from the test to determine the aggregate crushing value which determines the ability of an aggregate to resist crushing. But instead of using a standard force of 400kn. the force at which 10% of fines are produced is noted as the Ten Percent Fines Value. This usually requires a number of tests and a graph to establish the exact figure. This test tends to be used for softer aggregate where a force of 400kn. would crush most or all of the aggregate. This test is carried out BS 812 Part 111: 1990 for aggregates Partially Grading Tests The particle size distribution grading of a road surfacing material is an essential guide to the suitability of the material since the engineering properties are very dependant on grading. See Figure 7. Testing is carried out to B.S.1377: Part 2: 1990 for soils and BS 812: Part 103.1:1985 for aggregates. Figure Sieve Test (Sourced Soil Compaction Handbook) Plastic Limit Testing and Liquid Limit Testing The Plastic Limit (PL) is an indication of the percentage moisture content at which the soil fines change from a semi solid to a plastic state. In this test a 20 gram sample of material passing the O.425 mm sieve is mixed with a little water until it becomes plastic enough to be formed into a ball. The soil is then moulded between the fingers until the surface begins to crack. It is then repeatedly rolled on a glass plate into 3mm diameter threads until longitudinal cracking causes the tread to start to break up. This moisture content is the plastic limit. Test are carried out to BS 1377: Part 2:1990, CL5 Figure Plastic limit test and equipment (Sourced http://ral.train.army.mil) and (Sourced www.humbolgtmfg.com) The Liquid Limit (LL) is an indication of the percentage moisture content at which soil changes from a firm plastic state to a soft liquid state. Two methods are available for determining the liquid limit: the traditional method using the Casagrande apparatus and the more recently developed cone penetrometer method. Test are carried out to BS 1377: Part 2:1990, CL4.3 4.4 Figure Casagrande equipment Figure Cone Penetrometer (Sources www.humbolgtmfg.com) (Sources www.sbe.napier.ac.uk) The difference between the Liquid Limit and the Plastic Limit is called the Plasticity Index (PI). This index provides a good guide to the cohesive properties of a road building aggregate. A high PI may indicate the presence of an undesirable amount or type of clay. CBR test It is in essence a simple penetration test developed to evaluate the strength of road subgrades. How strong is the ground upon which we are going to build the road. (Summers 2010) Tests are carried out either unsoaked or soaked. Unpaved road materials would normally be tested according to the 4 day soaked test procedure. An estimated CBR value may be derived from the results of grading and plasticity tests. Tests are carried out to B.S.1377:4:1990 Section 7 Figure CBR test apparatus (Sourced Testing equipment Supply) MCV Test This test involves compaction of soil or fine aggregates using a hand held device. The compactive effort can be compared to that needed at the optimum moisture content. This enables a comparison with the actual moisture content of the soil. Test carried out to BS 1377: Part 4:1990 see Figure 13 for test apparatus. Figure MCV apparatus (Sourced www.ele.com) Triaxial Shear Strength Test The triaxial shear strength test subjects a soil specimen to three compressive stresses at right angle to each other with stress being increased until the sample fails in shear. This test is carried out to predict how the material will behave in a larger-scale engineering application. An example would be to predict the stability of the soil on a slope, whether the slope will collapse or whether the soil will support the shear stresses of the slope and remain in place. Tests are carried out to BS 1377: Part 6:1990. See figure 14 for test apparatus. Figure Test apparatus for Triaxial Shear Strength Test (Sourced www.namicon.com) New Changes to Site Investigation and Testing At present all Geotechnical investigation and testing is carried out to B.S. but come 31st March 2010 all test will be carried out using the new Eurocode 7 this will be for all publicly funded project. This does not apply to the private sector but there are likely to follow suit. Example of changes. TC 341: Geotechnical investigation and testing 14688 Identification and classification of soil 3 Parts 14689 Identification and classification of rock 2 Parts 17892 Laboratory testing of soil 12 Parts 22282 Geohydraulic testing 6 Parts 22475 Sampling methods and groundwater measurements 3 Parts 22476 Field testing 13 Parts (Sourced New Irish Geotechnical Standards and Selection of Characteristic Parameter Values 2009) Resources Estimation Introduction In this chapter the author will look at how quantities of materials that can be potentially in a borrow pit and how they may be calculated. One of the main primary objective of a borrow pit investigation and testing is to establish the extent of the different classes of materials and there suitability to the given project. With all the information in the next objective is to calculate the quantity of material that is in the potential borrow pit to see if its a viable option to proceed with. The potential quantity of material that can be extracted from a borrow pit should always be calculated in cubic metres (m3). A cubic metre should be seen as a box of material with a length (l) of 1 metre a height (h) of 1 metre and a depth (d) of 1metre. Before and estimates can be taken off a detail topography survey of the potential borrow pits will have to be taken see figure 21 for typical contour survey. However, with all information from the investigation of the site it can be hard to estimate an exact amount so it is better to estimate on the conservative than on the generous. This may come about if the information between the trial pits may vary from data collected as seen early a grids of 30 to 50 meters should be used and for larger areas if could be up to 100 meters grids There are different method of calculation the quantity of material that in the given site depending on the borrow pit make up but the most simple way is to break the area up into simple shapes such as rectangular prisms or triangular prisms. The volume of material in these shapes is estimated by first calculating a representative area in square meters (m2), and then multiplying this area by its depth or a length (in metres). It may need to be an average depth or length if the pit is irregular in shape or the deposit has a variable thickness. Formula for calculating the areas for different type of pit can be work out using the standard mathematically formula to get the quantities for the site. See figures 17,18,19,20 Trapezoid Figure Formula for a Trapezoid shape Volume = Base X Height Figure Formula for Prisms Volume = Length X Width X Height Figure Formula for a Rectangular Volume = 1/3 pr2x height Figure Formula for a cone shape (Sourced Area and surface Formulas) Another method of course if available to you is different types of computer packages that can do the work for you like AutoCAD 3D civil packages. Figure Typical Contour Survey (Sourced Volume Calculations) Material Wastage, Shrinkage and Bulking Material Wastage Wastage can occur if site investigation reports of material dont add up to what in the ground and material been use for work it was not envisaged to do, like having to create bund not accounted for some. Material Bulking Material bulking will also to be taken into account when hauling materials of the bulking-up factor. When materials are excavated they are loosened and sometimes broken down, this result in an increase in volume per unit weight known as bulking. The bulking factor of a material is the bulk density in the pit face (bank) divided by the loose bulk density. A bulking factor of 1.25 indicates that 100 m3 of bank material will become 125 m3 of loose material in the stockpile. Material Shrinking Compacted material, material that has been excavated from it natural state and placed some place else for compaction. With compaction the volume reduces. The same can apply to shrinkage when material is been compacted what was originally 1m3 in a compacted state with shrinking factor is 0.85m3. Table 1 Typical Material Density, Bulking and Shrinkage Factors. (Source Earthworks) The Resources Estimation has a dual purpose with given you the quantities of resources out but also on the other hand the amount of material which if can be disposal back into to fill the pits from surplus or unsuitable material that cannot be use on site. Legalisation Introduction This chapter discusses of both Planning legislation and Waste legislation in the terms of Construction and Demolishing Waste in the construction sector. The planning legislation we will be looking in relation to opening up of a borrow pit for bulk material (soil) and the production of aggregates. In CD waste legislation for the disposal of inert material. In the area of waste management there has been a number of direct and indirect (both national and EU) legislative influences on how operations should be carried out with the regards to CD waste in road construction The Planning and Development Act 2000 and associated Regulations 2001 The Planning and Development Act 2000 is the main act for planning permission in Ireland and this process is overseen by the different Local Authorities in the country. Regulations 2001 is the statutory legislation that applies to new and existing extractive developments and ancillary facilities in Ireland. Quarries (including sand and gravel pits) operating before the existence of planning legislation in Ireland that was implemented in 1964 did not have to obtain planning permission and were essentially unregulated. Despite this, much self-regulation took place such as imposition of emissions (noise, blasting, and dust) limits and the implementation of Environmental Management systems accredited to IS0 14001. However, under Section 261 of the Planning and Development Act 2000, a new system of once-off registration for all quarries was introduced. Only those quarries for which planning permission was granted in the five years before section 261 (i.e. after April 1999) became operative are excluded. Section 261 has also resulted in some extractive sites being required to submit an Environmental impact statement and to go through the formal planning process. This review process has resulted in up-to-date environmental and biodiversity management conditions being enforceable on all authorised sites; this process is largely complete at this time. CD Waste legislation As spoken earlier on CD waste legislation in Ireland is influenced by European waste policy and legislation. The EU waste management is based on the waste hierarchy which gives preference to waste prevention, then to waste recovery (including reuse, recycle and energy recovery). And finally to waste disposal (to landfill) See figure 22 for hierarchy Figure Waste hierarchy (Source Fas CIF Handbook on Construction Demolishing and Waste) European Legislation The majority of European waste management directives are based on the Symonds report 1999 which evaluated the recycling of CD Waste in each of the member state and prepared 55 recommendation. The following is a list of the most important recommendations of the report Fly tipping subject to sanctions Land filling of CD waste should be discouraged by member states. CD Waste derived aggregates should not be discrimination in the market place, primary aggregates and CD Waste derived aggregates should be both be considered as raw materials The client should demand that Environmental Impact Analysis be undertaken for each project which could form part of Environmental Management Plan. Governments to draw up National Waste Management plans for CC waste. The main based EU based legislation that influences CD waste management on a national level are Framework Directive on waste 75/442/EEC plus amendments Framework Directive on Hazardous Waste,1991 91/689/EEC

Discourse Community

McCarthy relates the classes Dave attended to a foreign country with a language that had to be learned in order to succeed. Dave struggled in his poetry class because he failed to learn the â€Å"foreign† language of the class. In this academic discourse, Dave had to learn to analyze and write essays that will, make [him] say something quite specific about the meaning of a poem (your thesis) and demonstrate how far [he has] progressed In recognizing and dealing with he devices a poet uses to expresses his Insights† (242).Because this was unlike what he had to do in his Freshmen Composition or Biology class, this approach was foreign to him. He was use to summarizing and proving his textual coherence but now he was more focused on new ways of thinking and writing for that class. HIS grades In the poetry class never Improved. The social aspects as well as his coherence Influenced his writing. Dave had a connection to the writing his both of his other classes but not to poe try.He thought that none of the poetry related except for the salary literary devices. He also felt that he was an outsider on the adolescence while his instructor wasn't. He would spend hours writing the essay to fulfill the required Manner and Quality just to have his errors pointed out without any explanation as to why they were wrong. Dave felt that, â€Å"In Poetry, more or less each poem is different, o it's not taught to you.You just have to figure it out from that poem itself and hope Dry. Forsook likes it† (251 This hindered Dive's chance of succeeding in the class. Because he saw that his writing was failing he could've asked to meet with the professor privately to discuss what he was doing wrong. The professor also could've had more guideline lectures and helped the students by pointing out some details in the poem that would've benefited their writing.