Approaches to Flat Slab Design

Approaches to Flat Slab Design Abstract This dissertation aims at the flexure behaviour of reinforced concrete flat slabs in the elastic range and at the ultimate load. As such, it endeavours to give readers a thorough knowledge of the fundamentals of slab behaves in flexure. Such a background is essential for a complete and proper understanding of building code requirements and design procedures for flexure behaviour of slabs. The dissertation commences with a general history background and the advantages of using flat slab as the type of floor construction. After that, an introduction of various slabs analysis method as well as the determination of the distribution of moments using elastic theory will be discussed. The building code based methods like ACI direct design method, Simplified coefficient method for BS8110 and EC2 and Equivalent frame method will be explained in details. After that follows a detailed of limit procedures for the ultimate analysis and design of flat slab using general lower bound theory for strip method and upper bound theory for yield line analysis. Besides, the fundamental of the finite element method will be discussed as well. Then, analysis will be carried out on a typical flat slab panel base on each design approach available such as yield line method, simplified coefficient method, direct design method, finite element method as well as Hillerborg strip method. The flexure resistant obtained from the analysis result will then be compared among each others and highlighting the possible pros and cons of the different analysis. Eventually, the analysis results will then be discussed in order to conclude a rational approach to flat slab design and further recommendation will be given to the future improvement of this research. 1. Introduction Concrete is the most widely used construction material in the world compare to steel as concrete is well known as the most versatile and durable construction materials. In fact, concrete is also one of the most consumed substances on Earth after water [1]. Concrete has played a major role in the shaping of our civilization since 7,000 BC, and it can be seen everywhere in our built environment, being used in hospitals, residential buildings, schools, offices, industrial buildings and others [2]. Nowadays, construction should not just be about achieving the cheapest building possible, but providing best value for the client. The best value may be about costs, but also includes speed of construction, robustness, durability, sustainability, spacious environment, etc. In fact, many type of concrete floor construction can easily fulfilled the above requirements. In the past, forming the concrete floor construction into shape was potentially the most costly and labour intensive part of the process. Nowadays, with the help of modern high efficiency modular formwork has speed up the concrete floor construction process. Alternatively, floor slab elements may be factory precast, requiring only assembly, or stitching together with in-situ elements. The result is an economic and swift process, capable of excellent quality and finishes to suit the buildings needs. 1.1 Types of concrete slab construction Concrete slab floor is one of the key structural elements of any building. Concrete floor choice and design can have a surprisingly influential role in the performance of the final structure of the building, and importantly will also influence people using the building. In general, cost alone should not dictate slab floor choice in the construction. However, many issues should be considered when choosing the optimum structural solution and slab floor type that give best value for the construction and operational stages. The optimum slab floor option should inherit benefits such as fabric energy storage, fire resistance and sound insulation between floors and others as achieving these requirements will eventually help the concrete building to lower the operation costs and maintenance requirement in long term. In general, reinforced concrete slab floors can be divided into three categories as detailed below: Flat slab Flat slab is also referred to as beamless slab or flat plate. The slab systems are a subset of two-way slab family, meaning that the system transfer the load path and deforms in two directions. It is an extremely simple structure in concept and construction, consisting of a slab of uniform thickness supported directly by the columns with no intermediate beams, as shown in Figure 1.1. The choice of flat slab as building floor system is usually a matter of the magnitude of the design loading and of the spans. The capacity of the slab is usually restricted by the strength in punching shear at the sections around the columns. Generally, column capitals and drop panels will be used within the flat slab system to avoid shear failure at the column section when larger loads and span are present, as shown in Figure 1.2. Figure 1.1: Solid flat slab Figure 1.2: Solid flat slab with drop panel Flat slab is a highly versatile element widely used in construction due to its capability of providing minimum depth, fast construction and allowing a flexible column grid system. Slabs supported on beams One-way spanning slabs are generally rectangular slabs supported by two beams at the opposite edges and the loads are transferring in one direction only. Figure 1.3 shows the type of one-way slabs. Deep beam and slab Band beam and slab Figure 1.3: Type of one-way slabs However, slab supported on beams on all sides of each panel are generally termed two-way slabs, and a typical floor is shown in Figure 1.4. Figure 1.4: Two-way slab The beams supporting the slabs can generally be wide and flat or narrow and deep beam, depending on the structures requirements. Beams supporting the slabs in one or two way spanning slabs tend to span between columns or walls and can be simply supported or continuous. In this beam-slabs system, it is quite easy to visualize the path from the load point to column as being transferred from slab to beam to column, and from this visualization then to compute realistic moments and shears for design of all members. This form of construction is commonly used for irregular grids and long spans, where flat slabs are unsuitable. It is also good for transferring columns, walls or heavy point loads to columns or walls below. This method is time consuming during the construction stage as formwork tends to be labour intensive [3]. Ribbed and Coffered slabs Ribbed slabs are made up of wide band or deep beams running between columns with equal depth narrow ribs spanning the orthogonal direction. Loads are transferring in one direction and a thin topping slab completes the system, see Figure 1.5. Ribbed with deep beam Ribbed with wide beam Figure 1.5: Types of ribbed slabs Coffered slab may be visualized as a set of crossing joists, set at small spacing relative to the span, which support a thin slab on top. The recesses in the slab usually cast using either removable or expendable forms in order to reduce the weight of the slab and allow the use of a large effective depth without associated with slab self weight. The large depth also helps to stiffer the structure. Coffered slabs are generally used in situations demanding spans larger than perhaps about 10m. Coffered slabs may be designed as either flat slabs or two-way slabs, depending on just which recesses are omitted to give larger solid areas. Figure 1.6 shows the types of waffle slabs. Coffered slab with wide beam Coffered slab without beam Figure 1.6: Type of coffered slabs Ribbed and coffered slabs construction method provides a lighter and stiffer slab, reducing the extent of foundations. They provide a very good form where slab vibration is an issue, such as electronic laboratories and hospitals. On the other hand, ribbed and coffered slabs are very consuming during the construction stage as formwork tends to be labour intensive [3]. 1.2 Flat slab design as the choice of research The choice of type of slab for a particular floor depends on many factors. Cost of construction is one of the important considerations, but this is a qualitative argument until specific cases are discussed. The design loads, serviceability requirements, required spans, and strength requirement are all important. Recently, solid flat slab is getting popular in the construction industry in Europe and UK due to the advantages as below: Faster construction Construction of flat slabs is one of the quickest methods among the other type of floors in construction. The advantages of using flat slab construction are becoming increasingly recognised. Flat slabs without drops (thickened areas of slab around the columns to resist punching shear) can be built faster because formwork is simplified and minimised, and rapid turn-around can be achieved using a combination of early striking and flying systems. The overall speed of construction will then be limited by the rate at which vertical elements can be cast [4]. Reduced services and cladding costs Flat slab construction places no restrictions on the positioning of horizontal services (eg. mechanical and electrical services which mostly running across the ceiling) and partitions and can minimise floor-to-floor heights when there is no requirement for a deep false ceiling. In other words, this helps to lower building height as well as reduced cladding costs and prefabricated services [4]. Flexibility for the occupier Flat slab construction offers considerable flexibility to the occupier who can easily alter internal layouts to accommodate changes in the use of the structure. This flexibility results from the use of a square or near-square grid and the absence of beams, downstands or drops that complicate the routing of services and location of partitions [4]. Undoubtedly, flat slab construction method is getting popular but there are still many different views about what constitutes the best way of reinforcing concrete in order to get the most economic construction. In addition, a range of methods is available for designing the flat slab and analysing them in flexure at ultimate state. Different analysis and design methods can easily result in variety of different reinforcement arrangements within a single slab, with consequent of making the different assumptions in each analysis and design method. Therefore, this research project will concentrate in examining the various analysis methods for the design of flexural reinforcement of reinforce flat slabs in terms of the code provisions, yield line analysis as well as finite element analysis method. 1.3 Research objectives Reinforced concrete slabs are among the most common structural elements, but despite the large number of slabs designed and built, the details of elastic and plastic behaviour of slabs are not always appreciated or properly taken into account especially for flat slab system. This happens at least partially because of the complexities of mathematic when dealing with elastic plate equations, especially for support conditions which realistically approximate those in multi-panel building floor slabs. Because the theoretical analysis of slabs or plates is much less widely known and practiced than is the analysis of elements such as beams, the provisions in building codes generally provide both design criteria and methods of analysis for slabs, whereas only criteria are provided for most other elements. For example, Chapter 13 of the 1995 edition of the American Concrete Institute (ACI) Building Code Requirements for Structural Concrete, one of the most widely used Codes for concrete design, is devoted largely to the determination of moments in slab structure. Once moments, shear, and torques are found, sections are proportioned to resist them using the criteria specified in other sections of the same code [5]. The purpose of this research project is to examine the analysis methods such as Hillerborgs strip, yield line analysis, equivalent frame method, finite element method and etc. particularly for the design flexural reinforcement of reinforced flat slabs, and meanwhile to gain full understanding of the theories. The different analysis methods will then be analysed and compared with the flexural capacity method calculated using general codes of ACI 318 [5], Eurocode 2 [6] and BS8110 [7]. The outcomes of the comparison will lead to highlight the pros and cons of different approaches and codes paving the way to find out a rational approach for the flat slab design in flexure. The main objectives of the proposed research are: To examine the different methods and codes use to handle the flexural capacity of the slab. To outlined the different positive and negative aspect in a specific code or method of design To gain full understanding of the flexural design theories and code requirements. To highlight the most economical design solution to overcome the flexure in a flat slab while maintaining the safety as code requirements. 1.4 Research dissertation methodology The following will be the proposed methodology of the research dissertation: Background of flat slab in construction industry Research of the evolution of flat slabs in the past decades and the major contributions made for the construction industry. Difficulties faced during the flexure design of flat slabs in the past and the possible solution for the problems will be discussed. This part of research process result in closer to the background history and the revolution of flat slab in construction. Overview of flat slab design methods Examine each design approaches used to design for flexure in flat slab such as yield line analysis, Hillerborgs strip method, the simplified coefficient method for BS8110 or Eurocode 2 and direct design method for ACI. An insight into different methods and codes will help to establish and revise the general code provisions and also gain the full understanding of theory and design of flat slab. Analysis of flat slab with different approaches Different analysis and design approaches for flexural reinforcement of RC flat slabs will be performed based on the same model slab. For instance, finite element computer software packages will be used to perform the finite element analysis. This part will eventually provide a deep understanding of various design methods as well as the ability to use finite element software in analysis and design. Research the flexural pros and cons in a flat slab among each design methods to get the rational design approach. Discussion The numerical analysis results obtain from different design methods and the codes will be discussed and compare among each others and also to the experimental results obtain in the previous research papers such as Engineering journals and other relevant engineering sources. This process will ultimately lead to a proper and systematic comparison of the codes and methods used, and highlighting their pros and cons. Conclusion This part will conclude the discussion on advantages and disadvantages of all the examined design methods trying to establish which design method may result in a more economic and rational solution. Furthermore recommendations if required and the possible future areas of research will be brought up. 1.5 Dissertation layout Chapter 2 Overview of Design This section will cover the brief of the evolution of flat slabs history. Brief introduction to the current codes for flat slab design such as American Concrete Institute ACI-318, British Standard BS8110 and Eurocode 2. In addition, the fundamental of analysis and flexure strength requirement of each code will be briefly described. Brief introduction to design methods and history of yield line analysis, Hillerborgs strip method and finite element analysis in the slab flexure design. Chapter 3, Analysis Introduction of the analysis process and assumption made for each analysis methods. Focusing on different numerical aspects of the design under different codes and approaches. This section will provide deep understanding of various design methods and how the methods deal with the flat slab flexure problem. Chapter 4, Discussion Comparison between different code equations and theories. Various numerical result from different approaches will be compared and discussed based on the experimental results from past research papers. Pros and cons of different methods for design codes (eg. ACI, EC2 and BS8110), Hillerborg strip method, yield line analysis Graphs and tables will be available to show the summary of the results from different methods. Chapter 5, Conclusion Summarise the economic and rational flexural design approach for flat slab Further recommendations 2. Overview of Design Method The aim of chapter 2 is to provide an overview of the current practice of the design of reinforced concrete flat slab systems. General code of practice of ACI 318, EC2 and BS 8110 requirements are presented, along with the brief of the ACI direct design method, EC2/BS8110 simplified coefficient method, equivalent frame method, yield line, Hillerborgs strip method as well as finite element method. Each procedure and the limitations are discussed within. The following discussion is limited to flat slab systems. That is, the design methodologies presented below relate only to slabs of constant thickness without drop panels, column capitals, or edge beams. In addition, prestressed concrete is not considered. 2.1 Approaches to the analysis and design of flat slab There are a number of possible approaches to the analysis and design of reinforced concrete flat slab systems. The various approaches available are elastic theory, plastic analysis theory, and modifications to elastic theory and plastic analysis theory as in the codes (eg. ACI Code [5]). All these methods can be used to analyse the flat slab system to determine either the stresses in the slabs and the supporting system or load-carrying capacity. Alternatively, these methods can be used to determine the distribution of moments to allow the reinforcing steel and concrete sections to be designed. 2.1.1 Elastic theory analysis Conventional elastic theory analysis applies to isotropic slabs that are sufficiently thin for shear deformations to be insignificant and sufficiently thick for in-plane forces to be unimportant. The majority floor slabs fall into the range in which conventional elastic theory is applicable. The distribution moments forces found by elastic theory is such that: Satisfied the equilibrium conditions at every point in the slab Compliance with the boundary conditions Stress is proportional to strain; also, bending moments are proportional to curvature The governing equation is a fourth-order partial differential equation in terms of the slab deflection of the slab at general point on the slab, the loading on the slab, and the flexural rigidity of the slab section. This equation is complicated to solve in many realistic cases, when considering the effects of deformations of the supporting system. However, numerous analytical techniques have been developed to obtain the solution. In particular, the use of finite difference or finite element (FE) methods enables elastic theory solutions to be obtained for slab systems with any loading or boundary conditions [8]. Nowadays, with the advancement of computer technology software, designer can easily obtained the bending and torsional moments and shear forces throughout the slab easily with any finite element software packages such as ANSYS, LUSAS, STAAD PRO, SAP2000 and others. 2.1.2 Plastic analysis The plasticity, redistribution of moments and shears away from elastic theory distribution can occur before the ultimate load is reached. This redistribution occur because for typical reinforced concrete section there is little change in moment with curvature once tension steel has reached the yield strength. Therefore, when the most highly stressed sections of slab reach the yield moment they tend to maintain a moment capacity that is close to the flexural strength with further increase in curvature, while yielding of the slab reinforcement spreads to other section of the slab with further increase in load. To determine the load carrying capacity of rigid-plastic members, two principles are used as below: Lower Bound Theorem states that if for any load a stress distribution can be found which both satisfies all equilibrium conditions and nowhere violates yield conditions, then the load cannot cause collapse. The most commonly used approach is Hillerborgs Strip method [9]. Upper Bound Theorem states that if a load is found which corresponds to any assumed collapse mechanism, then the load must be equal to or greater than the true collapse. Finding a load which may be greater than the collapse load may be considered to be an unsafe method; however, because of membrane action in the slab and the strain hardening of the reinforcement after yielding, the actual collapse load tends to be much higher. The commonly used approach of this method is yield line theory [9]. 2.2 Early History and Design Philosophies Credit for inventing the flat slab system is given to C.A.P. Turner for a system describe in the Engineering News in October 1905. However, the first practical flat slabs structure, Johnson-Bovey Building was built in 1906 in Minneapolis, Minnesota, by C.A.P. Turner. It was a completely new form of construction, and in addition there was no acceptable method of analysis available at that time. The structure was built at Turners risk and load-tested before hand in to the owner. The structure met its load test requirements hence the flat slab system was an instant commercial success and many were built in the United States later on [10]. Robert Maillart was also one of the founding fathers of flat slab from Europe, a design-and-built contractor who was perhaps better known for his work on the design of Reinforced Concrete Bridge. In 1908 Malliart carried out a series of full-scale tests on his flat slab system, see Figure 2.1. About the same time, Arthur Lord, a research fellow at the University of Illinois, also became interested in understanding how flat slabs behaved. In 1911, Lord obtained approval to instrument and test load a seven-storey flat slab building in Chicago. The view and work by them paves the way for the development of flat slabs. Their work evolved into a codified method of design and in 1930 became the London Building Act [11]. Then, Robert Malliarts dimensioning method is reviewed and compared with methods of elastic plate theory and plastic analysis. When compared the results with as elastic analysis, Malliart method considerably underestimate the bending moments acting for the flat slabs. However, the comparison made on limit analysis procedures, Malliarts design is still within the reasonable safety margins [12]. Figure 2.1: First test on flat slabs carried out in 1908 at Maillart Co. works in Zurich [11] In 1878, Grashoff have tried to use polynomial approximation deflection function to work out the flat slab design but was unsuccessful to satisfy certain boundary conditions. At that time, concrete flat slab was emerged in the use as boiler cover plates for steam engines. Due to this problem, in 1872, Lavoinne was forced to work out the flat slab using the Fourier series. Lavoinne assumed a uniformely load is loaded on an infinite large plate and the plate is under simply supported conditions. In this assumption, Lavoinne neglected the poissons effect but Grashoff did consider [12]. Maillart was aware of Grashoffs approach but he thought that it was useless for his purpose because it was restricted to uniformly distributed loads and did not account for the stiffening effect of columns. Based on simple equilibrium considerations, Nicholas managed to prove that all these systems resulted insufficient reinforcement [12]. In the year of 1921, Westergaard and Slater managed to develop a new flat slab theory by comparing the theory results to the available experimental results at that time. In the theory, the stiffening effects due to the presence of columns under different load condition were discussed. Marcus had considered this theory later on by applying finite differences approach; Marcus assumed few different boundary conditions and loads. During the past, due to the absence of a proper theory for flat slab design in Germany hence flat slab construction was almost impossible to be carried out. After sometime later, requirements for the flat slab design theory were established. This theory again mentioned that the design moment must follow Lewes theory (1920, 1922) or theory developed by Marcus (1924). [12]. 2.2.1 Robert Maillarts Contribution In 1902, Maillart has successfully developed dimensioning procedure to design a flat slab. This method was used and succeeds in building few numbers of large flat slabs structure. Due to the absence of strict construction rules in Switzerland, Maillart managed to design flat slab by considering the principle of superposition and successfully performed several arbitrary loads testing on flat slabs. Maillart derived the flexure moments at intermediate points by multiplying the flexural stiffness of the slab with the respective curvatures. The curvatures were derived using the double differentiation of the eight-order polynomial functions meanwhile the flexural stiffness of the slab was analysed using simple one way flexure test on respective slab strips [12]. Maillarts reinforcement pattern for flat slab was very close to the current design approaches. Maillarts method required to reinforce the slab in only two directions. However, C.A.P. Turner insisted to reinforce the slab in four directions (see section 2.2.2 for details). Maillart dimensioning procedure emphasised in designing for positive moments at three different locations labeled as O, Q, and C in Figure 2.2 (where O at the midspan, Q at the quarter point of transverse span l2, and C in the column axis). Negative moments were not checked in Maillart dimensioning procedure and all the bottom bars were simply bent up in the columns strips. In this method, the span ratios, size of column capital and the minimum height of the column capital were restricted to certain values, limiting the nominal shear stress at the circumference of the column to a permissible value [12]. Figure 2.2: Robert Maillarts system and notation for plan view [12] Later, Maillarts results were found underestimated with elastic analysis method. In addition, Maillarts method predicts a reduction in average moment value corresponding to span ratio while elastic plate theory remaining constant. Maillarts method underestimated elastic moments especially for a very large slab structure. In other words, Maillarts dimensioning method has significant differences with elastic analysis procedure in the flexure result of slab [12]. Since Maillarts dimensioning method ignored the negative moments hence this worries the designer when came to the safety of the slab design. In conclusion, Maillart underestimated the moments compared to the elastic analysis on the other hand similar approach to the limit analysis [12]. 2.2.2 C.A.P. Turners Concept Turner never published complete details of his design methods in order to maintain a competitive advantage in the design industry. However, some insights of Turners conceptual design of his flat slabs are available in his patent applications (C.A.P. Turner, Steel Skeleton and Concrete Construction and Elasticity, structure and strength of materials used in engineering.) [10]. In fact, Turners principle design was more concerned about shear in flat slabs as stated by him, Beside the unreliability of concrete in tension, it is unreliable in shear in its partially cured condition. This renders desirable use of reinforcement near the columns or supports to take care of shear [10]. In Turners principle, a so called Mushroom heads or cantilever caps were designed to provide shear resistance in flat slabs. As quoted by Turner, heads may be constructed in accordance with the shearing strain. The diameter of cantilever head was about one-half of the span length. Turner presumed the reinforcement cage acted as part of cantilever support to the slab [10]. Figure 2.3 is an example of the cantilever support mentioned by Turner. Figure 2.3: C.A.P. Turner, mushroom or cantilever shear head [10] Besides shear, Turner also focused on moments and used a four way reinforcement which also known as reinforcement belts, see Figure 2.4. These belts have the same width as that of the cantilever shear head. Turner believed that the positive moments were small due to the cantilever support which is stated as, Referring to flat central plate, or the suspended slab portion, there is practically no bending moment at the center [10]. Figure 2.4: C.A.P. Turners four belt floor reinforcement system [10] Also, Turner believed reinforced the slab in four directions (four belt floor reinforcement system) would provide the moment resistance to counter the negative moments at supports. With these conceptions, Turner considered a very small total design moment to proportion the flexural steel in the four belts. Turner simplified the equation as following: (1) where, W = total dead and live load in one bay L = nominal dimensions in one bay As = total flexural steel, distributed among the four belts fs = allowable steel stress d = distance to tension reinforcement Turner used the co-efficient of 1/50 for equation (1) above reference to Grashoff (1878) and to Prof. Henry T. Eddy (1899) from University of Minnesota. In fact, Turner decided to use such a small coefficient due to the consideration of shorter effective span between cantilever heads. Moreover Turner also considered the slab spanning continuously instead of simply supported design. Numerous experiments data performed by Turner proved that such a coefficient was sufficient for flexure resistant. Besides, the use of cantilever head lead to the unnecessary of drop panels in Turners concept. Turners design concept has successfully built many buildings and bridges from year 1905 to 1909 [10]. 2.3 Current Methods of Flat Slab Design 2.3.1 American Concrete Institute (ACI) American Concrete Institute (ACI) is one of the oldest codes and widely been used to design for reinforced concrete structures. The code covers a number of methods to design a flat slab system. The design of structural concrete is dictated by Building Code Requirements for Structural Concrete (ACI 318-05) and Commentary (ACI 318R-05). The ACI code contains procedure for the design of uniformly loaded reinforced concrete flat slab floors. These methods are direct design techniques and equivalent frame method. All these methods are based on analytical studies of the distribution of moments using elastic theory and strength using yield line theory, the results of tests on

Human Rights and Social Justice

Human Rights and Social Justice Integrated Paper Vicki MacWhinnie-Ilundain Fordham University Viewpoint and Concepts that Best Clarify the Dilemmas in Hugo’s Case Hugo’s story highlights the value conflicts that social workers face in every-day practice. The policies that dictate the funding, the scope of services, and the eligibility for the services that Hugo may need in order to actualize his basic human rights were developed within a system that continues to practice within the Rawlsian theory of social justice frame work. Therefore, these government policies tend to support the concept that people are only entitled to their â€Å"fair and due share† of services and/or access to resources if they are working to enhance the good of the over all society (Banerjee, 2005, p. 13). In Hugo’s case, there are psychological, cultural and physical factors that may impact his ability to maintain gainful employment. These individual aspects of Hugo’s life situation are not taken into consideration in determining how long he can receive supports, or what types of supports he receives. The state-funded financial benefits that Hugo requires in order to have his very, basic needs met; such as food, clothing and shelter, have a five-year limit. Because there is no consideration to human rights behind the 5-year limit, Hugo has unmet human rights. This creates a value conflict for Hugo’s social worker, who is working within a system that has Rawlsian infused policies; yet, is mandated by the National Social Work Code of Ethics to promote social justice in a manner that respects the unique strengths and dignity of the individual (NASW, 2008). You can read also  Justice System Position Paper The social worker working from a human rights-based perspective; where according to Ife (2008) â€Å"there is a obligation on every member of society to respect and support people’s rights†, will address Hugo’s unmet needs that stem from this 5-year limit policy as unfulfilled rights rather than assessing them as needs for which Hugo may or may not qualify to receive services (p. 113). Adding to the complexity and value conflict of the social worker’s role is the need for the social worker to partner with Hugo to identify not only his assets; but to also identify the barriers he faces. The social worker can develop a more in-depth understanding of Hugo’s barriers by exploring the levels of oppression Hugo experiences and his positionalty vis-a-vis all the systems and individuals he interacts with in society. Hugo is experiencing oppression at a structural level as a result of his position as an immigrant from Haiti who has experience trauma. Hugo has psychological and physical impairments as the result of past trauma, he is of an ethic background that is not part of the privileged class in the United States, and he was born outside the United States. These characteristics, which Hugo inherited through birth and via traumatic life experiences, tend to lead to discrimination in the United States. As a result of systematic discrimination, Hugo belongs to a subordinate group in the society and is oppressed by the dominant group. Mullaly (2010) explains that this â€Å"web of oppression †¦occurs for the most part because of the sanctioned ways that social institutions, laws, social policies, and social practices all work together to benefit the dominant group at the expense of subordinate groups† (p. 197). Challenges in Social Work Practice as a Result of a Paradigm Shift In this process of identifying assets and barriers, the social worker may face further value conflicts that impact their ability to empower Hugo to claim his human rights: The social worker has a moral and professional obligation to help Hugo advocate for his human rights. This will include supporting Hugo’s desire to participate in a lawsuit against the US government, who created the 5-year limit on public financial support. In Hugo’s circumstance, the legal mandate that limits the total amount of years he can access funding is impeding Hugo’s right to food, shelter, substance abuse treatment, psychological care, and safety. As an employee of a state funded program, the social worker is not allowed to ignore this mandate or seek to undermine it in any way. The social worker is faced with the challenge of partnering with Hugo to support his quest to actualize his human rights while working within a legal mandate that restricts Hugo’s access to the resources he requires in order to claim his human rights. The social worker is also challenged to reframe the way they conceptualize their interventions with Hugo. By choosing a rights-based approach, the ocial worker’s dialogue regarding Hugo’s rights will not only have a more global tone, but it will require the social worker to use additional skills to engage Hugo in a discussion that empowers Hugo to define his rights. Ife (2008) asserts that this type of social work practice has the potential to do more than just address an individual’s minimum needs but allows for social work to be transformative by building a society â€Å"hel d together by mutual respect for human rights of all citizens and based on notions of interdependence, mutual support and collective well-being† (p. 13). The challenge for the social worker is to elevate discussions and practice beyond working just with the individual case by engaging in dialogues and actions that â€Å"link their profession to economic, political and social aims of society as a whole† (Riechert, 2007, p. 31). The social worker faces many challenges when making a paradigm shift from a needs-based approach of social work to an elevated practice that focuses on human rights. The needs-based approach, where the provider identifies or diagnoses the â€Å"client’s† needs into narrow categories, and then provides a focused â€Å"intervention†, is deeply ingrained in the traditional models of practice. For example, the medical model is still widely accepted as best practice and is often used in social service programs and agencies. When taking the human rights approach, the social worker will reframe Hugo’s experience so that his rights are identified first, then used to re-conceptualize the needs that have to be met in order to actualize his rights. The social worker also faces the challenge of advocating for Hugo to receive services that support his right-based needs in systems with competing values. The rights-based approach conflicts with agency practices at a mezzo level, such as the use a medical treatment model that may not be culturally sensitive or focused on Hugo’s rights. The social worker may also experience conflicts of values on a macro level when advocating for funding for Hugo’s services. The state and/or federal government, who provide funding for the social services, may place a value on providing the least amount of services for minimum cost to tax payers rather than on Hugo’s unmet rights. On a micro level, the social worker may experience difficulties building rapport with Hugo because of their differences in gender, ethic background, power, education, and socio-economic status. Level’s and Dimensions of Hugo’s Well Being The Universal Declaration of Human Rights established global principles of human rights that set the precedence that all people have the right to an â€Å"a standard of living adequate for their health and well being; including food, clothing, housing, and medical care and necessary social services, and the right to security in the event of unemployment, sickness, disability†¦ or other lack of livelihood in circumstances beyond his control† (United Nations, 1994). Hugo’s social worker can discuss Hugo’s well being in a human rights framework by exploring the domains of wellbeing that impact Hugo’s daily life. The social worker and Hugo may need to establish a language to use as they talk about Hugo’s life experiences, if they are going to successfully switch from a needs-based paradigm to a rights-based paradigm. The social worker can use the seven domains of wellbeing to help deconstruct the needs-based thinking and language that has been the context for the â€Å"interventions† Hugo has received from social services in the past. Discussions using the domains of wellbeing may include: education, mental health, physical health, political and legal, cultural, and spiritual. After reaching the 5-year limit for public financial benefits, Hugo does not have access the resources required to provide food, shelter and clothing. Hugo’s metal and physical functioning has been impacted after experiencing a series of traumas, limiting Hugo’s access to education and employment. Hugo experiences multiple levels of oppression and discrimination which he may have internalized making it difficult for him â€Å"to recognize his abilities, cope with normal stresses of life, work productively and make a contribution to his community† (World Health Organization, 1999). Hugo has experienced physical traumas that have impacted his physical capabilities. As an immigrant in the United States Hugo does not have fair or equal access to legal support or protection by laws. The discrimination that Hugo experiences also impacts Hugo’s ability to be seen as a valued member of the society his is living in. The social worker can support Hugo by exploring all aspects of Hugo’s well being so he can discover how to start to advocate for his rights that are encompassed by each of these life domains Plan of Engagement, Empowerment and Participation After further exploring various aspects of Hugo’s well being, that would also include Hugo’s assets or strengths, the social worker and Hugo may want to develop a plan of action to guide their work together. Hugo identified immediately that he wanted to access to the group who is collecting data for a lawsuit against the US government. Although it may be considered a conflict of interest for the agency that employs the social worker to be involved with the lawsuit against the state, the social worker can connect Hugo to the group so that he can work directly with them. The social worker could also met with her supervisor and/or agency director to discuss what networks or committees the agency attends in the community. Often these groups hold more power than a single social worker or agency and work directly with governmental agencies to make recommendations or to advocate for policy changes that best serve the interest in their communities. By using these approaches, the social worker is assessing her own positionality in her agency and community so that she can best support the requests of Hugo, without disrupting the relationship she has with her employer. The social worker can also start researching what resources are available in the community that can address the barriers that Hugo is experiencing while trying to claim all of his human rights. Once a comprehensive list of services and or resources is developed, the social worker and discuss each of these resources with Hugo to get his feedback about what he thinks might be useful to him. The social worker would provide information about the advantages and risks and/or disadvantages to using any of the resources so that Hugo could make an informed decision. If there is a resource that Hugo is interested in utilizing but does not quite meet the criteria or does not have the funds to access, the social worker can work with the agency and funding sources to see if there are alternative ways for him to access the resource. Even if Hugo does not get immediate access to the resource, the social worker has left a path of documentation and advocacy that can be used to work towards access to these types of resources in the future. Over time, the social worker can build a strong relationship built from trust and mutual respect with Hugo. In order to do that the social worker will need to understand how her positionality relates to Hugo’s and how that impacts Hugo interactions with the social worker and visa versa. It appears as though Hugo has used multiple community services in the past, yet he still has not actualized his rights. The social-worker can explore with Hugo what services were helpful to him in the past and what aspects of the services became barriers to him changing his over-all well being. If the social worker finds with the services in their community are; for example, not compatible with Hugo’s cultural beliefs, then the social worker can work in the community to advocate for changes how services are provided. Other agencies may be open to expanding how they provide services to include all members in their community. The social worker can accomplish these strategies by adopting the capability approach. Nussbaum (2007) describes the capability approach as â€Å"a species of a human rights approach. It makes clear, how- ever, that the pertinent goal is to make people able to function in a variety of areas of central importance. †(p. 21) By empowering Hugo to further develop his cognitive, physical and social skills, the social worker can provide opportunities for Hugo to attain his identified rights-based needs. The social worker encourages capability building by advocating that Hugo receive services that will build specific skills, not just treat a diagnosis. Over time, Hugo can learn to identify and articulate his rights, reframe them into needs and demand services that allow him to claim his rights. In doing so, Hugo will request services that have the components that he recognizes as necessary for his well-being. References Banerjee, M. M. (2005). Social Work, Rawlsian Social Justice, and Social Development. Social Development issues, 27(1), 7-24 Ife, J. (2008). Human Rights and Social Work Towards Rights-Based Practice (2nd ed. ). New York, NY: Cambridge University Press. Mullaly, B. (2010). Challenging Oppression and Confronting Privilege (2nd ed. ) New York, NY: Oxford University Press. NASW. (2008). Code of Ethics of the National Association of Social Work. Retrieved from http://www. socialworkers. org/pubs/code/code. asp Nussbaum, M. (2007). Human Rights and Human Capabilities. Harvard Human Rights Journal, 20(1) 21-24 Reichert, E. (2007). Challenges in Human Rights A Social Work Perspective. New York, NY: Columbia University Press. United Nations. (1994). Human rights and social work: A manual for schools of social work and social work profession. Geneva: United Nations Center for Human Rights. Retrieved from http://www. ohchr. org/Documents/Publications/training1en. pdf.

International Lega and Ethical Issues

International Legal and Ethical Issues Celina Garcia-Sanchez LAW/421 Gregory Martin What are the issues involved in resolving legal disputes in international transactions? The issues are what choice of law clause you are going to use in the contract in case of dispute or breach of contract. The other issue is what forum selection clause is going to be used if there’s ever an issue or dispute. Both are very important issues to address before getting into contract with a foreign business.You need to take in consideration in what part of the world you want legal action to take place if your business partner based in another country What are some practical considerations of taking legal action against a foreign business? The considerations would have to be how far do you want to take your legal action and how is it going to affect future business with the company. A consideration would be if arbitration is an option. It would be so much better and faster if the business would solv e their issues this way.What factors could work against CadMex’s decision to grant sublicensing agreements? If they grant sublicensing agreements to other companies, they will be losing money. But on the other hand they can put in a clause where they will collect a certain percentage of royalties for a long period of time and that can help balance the loss they are taking by sublicensing. But by doing so, it also makes them look more ethical with higher moral values. When the local customs and laws conflict with the customs and laws of an organization operating abroad, which should prevail?The customs where the business is being conducted, it makes more sense to do it this way due to the fact that the country where the business is being done has employees and the employees go by the laws of their own country. They are more familiar with them. How would you compare the issues in this simulation to the domestic legal issues discussed in your Week One readings? How should compan ies resolve domestic and international issues differently? I don’t think they should resolve issues differently, the way they are doing it right now by using CISG, WTO, OEDC, and IMF all those organizations help resolve any dispute they may have.

Essay on A Brief Biography of Edgar Allan Poe - 617 Words

Edgar Allan Poe Edgar Allan Poe was a famous author, poet, editor, and literary critic. Poe wrote Mystery, Horror, and detective fiction. Edgar Allen Poe had a difficult life; he had troubles with family, employment, and depression which ended his life. Edgar was born on January 19th 1809 in Boston Massachusetts. His mother died when he was 2 and his father abandoned him and his siblings as a child. After he was given up for adoption at a young age, soon was adopted by the Allan family. When he was young his family sent him to a grammar school in England where he learned Latin, French, math, and history. Edgar then returned to America to continue his studies. Edgar attended collage at Richmond, Virginia but only went for†¦show more content†¦Poe was unsatisfied with the low payment he was receiving so he moved to New York in 1837. While he was in New york he wrote a book called The Narrative of Arthur Gordon Pym jobs were low. Then in 1838 he moved to Pennsylvania to seek fo r better work. He got offering jobs for magazines in Penn. Poe published his book Tales of the Grotesque and Arabesque while in Philadelphia. The book did not sell and Poe was still in need for money and a steady job. He soon but surely became known around for the cause of writers needing a higher wage and for a copyright law. Poe moved back to New York to publish work that would soon become popular. In January Edgar published the book The Raven and became a well-known writer. He also was known for talking about better pay for his work and would give speeches to the public. Poe published two other books that year and also became an editor for the Broadway Journal. Before he became famous for his work he struggled for jobs and hopped around until he became known to the public eye for his talent of writing. But all came to an end, Poe then moved into the county in 1846. His wife had tuberculosis while he was in Penn. In 1838. His wife died in the winter a year later in 1847. Poe had g otten writers bock and became depressed and started drinking. He joined The sons of temperance in Richmond to try to stop his drinking problem. I then started to fancy a woman namedShow MoreRelatedA Brief Biography on Edgar Allan Poe Essay882 Words   |  4 PagesEdgar Allan Poe was born in Massachusetts, U.S. on January 19, 1809. Poe`s parents were Elizabeth Arnold Poe and David Poe Jr. Poe was named after a character in William`s Shakespeare King Lear. Poe was baptized at Episcopal Church in 1812.His mom was an actress and his dad was an actor. Poe`s dad abandoned the family in 1810. Poe had 2 siblings. His brother was named William Henry Leonard he was a writer, sailor, and poet. He was born in Boston on Jan 30, 1807. Poe`s brother died August 1, 1831Read MoreEssay on A Brief Biography of Edgar Allan Poe542 Words   |  3 PagesEdgar Allan Poe is best known today as one of the most intelligent and original writers in American literature. Many poets and story writers base their stories upon events and even aspects in their life. In the subject of this, it is so relatable to write about because there is some truth in the words. Edgar Allan Poe is said to be one of these people because his stories actually relate to his tragic, life. He was known for leading a very depressing life that was full of loss and grief of loved onesRead MoreA Brief Biography of Edgar Allan Poe Essay1001 Words   |  5 Pages Thesis Edgar Allan Poe was a fictional writer that astonished readers with his many mysterious poems and his tales of horror such as â€Å"The Raven†, â€Å"Annabelle Lee†, and â€Å"The Fall of the house of Usher†. Biography Edgar Allan Poe was born on January 19, 1809 in Boston Massachusetts. (A-1) His parents were English born actors Elizabeth Arnold Poe and David Poe Jr. (A-2) After his parents died he wasRead MoreA Brief Biography of Edgar Allan Poe Essay1192 Words   |  5 PagesKnown for his disturbing and sinister work, Edgar Allan Poe’s writing has captured the attention of readers for almost two centuries. His works and reputation were largely influenced by his childhood, education, adulthood, and struggles with his career, along with his legacy before and after his death. Edgar Allan Poe was born on January 19, 1809, in Boston, Massachusetts, as being David and Elizabeth Poe’s second child of three. David and Elizabeth were professional theatrical actors in a companyRead MoreA Brief Biography of Victorian Author Edgar Allan Poe1098 Words   |  5 PagesEdgar Allan Poe’s importance as a main stature in literature is based upon his dark and thought provoking poems. His difficult life influenced his melancholy writings. 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On January 29, 1845 he publishes his poem The Raven in the Evening Mirror which grantedRead MoreThe Tortured Poet : Edgar Allan Poe1312 Words   |  6 PagesThe Tortured Poet: Edgar Allan Poe â€Å"Beauty is the sole legitimate province of the poem† Poe, Edgar Allan. The Philosophy of Composition. 1846. The name Poe often brings to mind tales of horror and mystery, but this Poe was also a writer of sophisticated poems, capable of extreme poetic beauty within a dark genre of writing. Poe never lived the happiest of lives, but his writing is extraordinary, both for its execution, and for the sheer elegance of the words which he found to write upon the pageRead MoreEdgar Allan Poe s Writing Style1303 Words   |  6 Pagesprovince of the poem† Poe, Edgar Allan. The Philosophy of Composition. 1846. The name Poe often brings to mind tales of horror and mystery, but this Poe was also a writer of sophisticated poems, capable of extreme poetic beauty within a dark genre of writing. Poe never lived the happiest of lives, but his writing is extraordinary, both for its execution, and for the sheer elegance of the words which he found to write upon the page. Death is amo ng one of the recurring themes which Poe explored. Dark andRead MoreThe Tell Tale Heart By Edgar Allan Poe1161 Words   |  5 PagesOut of a vast quantity of these English historians, one stood out to me, his name is Edgar Allan Poe. Poe’s writing had its own unique gothic and horror style. The story, The Tell-Tale Heart is one of his very popular pieces of literature, it not only tells a story, but uses Poe’s unique style of writing to silently incorporate different genres, themes, and symbolism to create a sub-story within the text itself. Poe was born in Boston Massachusetts on January 19, 1809. At the young age of just 2 yearsRead More Edgar Allen Poe Essay1637 Words   |  7 PagesEdgar Allen Poe Edgar Allen Poes life was bombarded with misery, financial problems, and death but he still managed to become a world-renowned writer. Although he attended the most prestigious of schools he was often looked over as a writer and poet during his career. His stories were odd and misunderstood during their time. However, now they are loved a read by millions. On January 19, 1809 Edgar Allan Poe was born in Boston, Massachusetts at a lodging house. His parents David and Elizabeth