What Is The Procurement Method Construction Essay

What Is The Procurement Method Construction Essay Procurement is a term which describes the activities of the client or employer who brought about the construction or renovation of buildings. It is a mechanism that provides a solution to the problem: How can I build my project? (The Joint Contracts Tribunal, 2012) In most projects, the client (usually through their consultants or design team) will start the procurement process through the development of the project strategy. The strategy weighting opportunity, risks, and budget constraints of a project to determine the project is suitable to use which procurement method. (The Joint Contracts Tribunal, 2012) For each project, client will very care about the quality of the project, how long the project can be complete, the performance of consultants and the design of the project. Select an appropriate method of procurement is very important for client. Different client need different method of procurement because different policies, resources, organizational structure, the preferred contractual arrangements. Understanding of risk is essential because each procurement method has to follow a set of rules and procedures to select different particular route and risk. How a procurement can successful is depend on whether the construction project parties has comply with their obligations or not, how they identifying the risk of the project and how they deal with the risk of the project. There are four main procurements in construction which are designed by JCTs contracts. The four main procurement methods are: Procurement using Traditional methods Procurement using Design and Build methods Procurement using Management methods Procurement using Integrated or Partnering methods 2.0 a) Procurement using Traditional Procurement Method 2.1 Introduction of Traditional Procurement Method: In the traditional approach, the client must engage consultants such as Architect, Engineers and Quantity Surveyor to design the project. Those consultants design must meet the clients budget and satisfied by client. Once it is not meet clients budget the Architect and Engineers need to redesign the project and the Quantity Surveyor must recalculate the cost of the project. After the designed was satisfied by client and met clients budget, client, Architect or Quantity Surveyor will call tender to give contractors to price and bid for the tender. Client will base on the most suitable price that priced by contractors to make decision, which contractor will be the successful tenderer for the project. The price is not always the lowest but is the most suitable price for the project. Factors to choose a successful tenderer other than price, the contractor must have reputation, pass projects, good financial strength, skills and the contractor cannot have too many projects in hand. The successful contractor must follow the contract drawings and specifications to start the construction work. Contractor also must responsible for his workmanship and material, including work by sub-contractors and suppliers. Any defects, design errors or generated misuse, the contractor has to use his own money to repair or settle the problems. Contractors responsibility Client Consultants responsibility Figure : The Linear or Sequential Process of the Traditional Procurement System (Rosli, A.R, 2006) There are some types of contract will be use in traditional procurement method. These contracts are: Lump sum contract Measurement contract Cost reimbursement contract 2.1.1 Lump sum contract: Before construction project start, the contract sum of this contract is already determined and the amount of project is fixed in the agreement. The contractor must base on the fixed contract sum to construct a building. This contract is not subject to recalculate due to the contract sum is fixed. Once the construction work started, client not allow make any variation. But the contract sum can have a limited change in cost of material, labour and plant if the changes of amount is determined by checking vouchers, a formula, invoice etc. (Frederick University Cyprus, 2007) There are 2 types of lump sum contract: with quantities without quantities Lump sum contracts with quantities, client are based on drawings and bills of quantities to pay to the contractor. It means that any increase in the quantity of material, the contractor cannot claim with client. But contract can claim under provisional sum due to items are not accurately quantified. (Frederick University Cyprus, 2007) Lump sum contracts without quantities, client are based on drawings and contract document to pay to the contractor. It means that contractor can claim if there is any variation about the quantity of material. When the lump sum is total the material price, the work which done by contractor must described in the Schedule of Work. (Frederick University Cyprus, 2007) 2.1.2 Measurement contracts: Sometimes are called as remeasurement contract or schedule of rate contract. In this contract, contractor will pay base on the unit prices in the agreement after he complete the works. All the items needed for the construction work is stated in the contract document and bill of quantities. The contractor has to fill in the unit rate for each item and multiple with the quantities that calculate by Quantity surveyor to get the amount. (Frederick University Cyprus, 2007) 2.1.3 Cost reimbursement contracts: Sometimes is called as cost plus contracts. The contractor in order to construct the building and he will be pay based on the actual cost of materials, labour and plant plus certain percentage profit and overheads. The profit and overheads normally will be 10% of the total cost of materials, labour and plant. (Frederick University Cyprus, 2007) There are three types of fee in cost reimbursement contracts: Cost plus percentage fee Cost plush fixed fee Cost reimbursement based on a target cost 2.2 The cost, time and quality of via using Traditional Procurement Method: 2.2.1 Cost In the early stage of this system, client may require more money to pay those consultants which helped client design the project. But this giving client a guarantee to get the good price to complete the project due to all the design, drawings, and specifications is fully developed and described in detail before contractors start to bidding for the tender. Since client can control everything via using this traditional method, contractor no chances to adjust the project price become higher than normal price. Logically, this procurement system is very fair for client to get lower cost because all the competitors (contractors) must apply price to the project base on the bill of quantity that calculate by Quantity Surveyor. This system also can control over the variation cost but only for small amount of variation. (Rosli, A.R, 2006) 2.2.2 Time Compare with other procurement system, traditional system take longer time than other system to complete the project due to the design and budget must meet and satisfy by client. Although it takes longer time to produce but it considered is the best approach because client can clearly know actual cost to construct his project, can get better design from consultants and get better quality control of the project. Client can use this longer time to make decision and check the project design with consultant team before start construction. (Rosli, A.R, 2006) 2.2.3 Quality Traditional procurement method can come out with a construction project which is high quality controlled compare with other method. This method gives a lot advantage to client to compare the consultants design, decide which design suit his budget, management the project, protected by consultants due to giving professional advice and construction expertise between consultants and contractor. Using this method can give more time for client and consultants to check and develop the design, drawings, and specifications to create a better tender document. But this method do not give any advantages for contractor, contractor no power to design the project because contractor will engage after client and consultants decided the design of project. (Rosli, A.R, 2006) 2.3 Advantages Disadvantages of Traditional Procurement Method 2.3.1 Advantages of Traditional Procurement Method Client can controls the consultant team (design team) Client will have better control over the quality of works Client can obtain the best price through competitive tendering Can easily accommodate any variation of the works as required by the Client Clients interest is protected by the Consultants who serve as advisors and independent certifiers in the building contract Provided that the design has been fully developed and uncertainties eliminated before tenders are invited 2.3.2 Disadvantages of Traditional Procurement Method Client need to face many organisation due to many consultants The project need take long time to complete because many time is required in the early stage to design the building May be too cumbersome for the Client to coordinate with the various consultants the performance of consultants is very important because can directly affect the progress of the works 3.0 b) Procurement using Design and Build Method 3.1 Introduction of Design and Build Method: In the construction world there have four type of main procurement which is Procurement using Traditional methods, Procurement using Design and Build method, Procurement using Management methods and Procurement using Integrated or Partnering methods. In Procurement using Design and build method there is a method that to carry a task in which the design and construction services are contracted by a single entity, it is known as the  design-builder  or  design-build contractor. From the history, Design and Build is similar as master builders or master masons by the Ictinus and Callicrates when they built Parthenon in Athens. In Roman around 40 B.C, describing existing practice in the designed and construction of building was written by Vitruvius. (Timothy N. Toler Toler Hanrahan LLC Atlanta, Georgia) 3.2 Facts: Design and build is one of the procurement that using in building construction industry, following is the definition, method use and forms of contract. 3.2.1 Definition Design and build is a team consisting of general contractor, architect, and engineer. They are build-up to provide an owner with a one source point of contact for the design and construction of their proposed project. Design and build is known as a package deal and it has been use in the building industry for a long period ago. (Jack W E Masterman, 2002) Beside, Design and build combines into a single role the design responsibility of the project A/E and the building function of the prime contractor. 3.2.2 all in As known package deal is one of the all in contracting and it is a type of procurement method where a contractor is given the responsibility for the whole thing that is required and necessary for the design, construction and delivery of the project. Beside, under this package deal system the service of the contractor will be include the preparation of project brief, sketch and final working drawings getting all the approval from authorities, project financing, construction, furnishing and commissioning of all equipments and accessories and handing over the project to the client. Turnkey contract is one of the American term for the all in or package contract. Under this system, a contractor is entrusting to undertake the responsibilities for every necessary and required thing for the construction, completion, commissioning and hand over the project. The word turnkey means that, upon completion, the client is given the key and he can then enter the project by turning the key. The contractor had to do the whole thing from preparing project brief, getting approval, designing, financing, construction, furnishing and decorating to commissioning and handing over completed, cleaned and ready for use project. Develop and construct is also one of the integrated procurement which is much similar to design and build. In this case, the contractor is still given the responsibility for both the design and construction of the project. The difference is that, under Develop and Construct method the design consultants of client will prepare the concept of sketches or designs and passed them to the contractor and develop them and produced the detailed working drawings. The contractor will construct and complete the project based on what it has developed and produced. 3.2.3 Method Use / basis of procurement As known that there have four type of procurement in building industry. Design and Build is one of the procurement that using in the construction industry. Main contractor in Design and Build procurement is responsible for undertaking both the design and construction work on a project, for an agreed lump-sum price. Design and Build project can be different depending on the contractors design responsibility and the initial design in the employers requirements. However, for the Design and Build the contractors design responsibility is much greater than traditional contract with a contractor designed portion. Beside, sufficient time is needed for the contractor to prepare the employers requirements (usually employer will appoint consultants to facilitate this). The sufficient time is needed for the contractor to prepare their proposal and the tender price. By the way, proposal that been prepared by the contractor must matches all of the employers requirements before any of the contract are entered into. Furthermore, normally employer has power to control over the design elements of the project according to their requirements. But once the contract is passes the responsibility to the contractor, so the employer has no direct control over the contractor detailed design. 3.2.4 Forms of contract In the Design and Build procurement there have some of the contract documents which is formal agreement, conditions of contract, employers requirements, contractor proposals and schedule of rates. 3.3 Roles / responsibilities of each party involved Party involved in the Design and Build procurement is contractor and the client / employer. The responsibility of the contractor in the Design and Build procurement is concept design, tender and contracting, construction with detail design and the construction and hand over. Beside, the responsibility of the client and consultants is project brief, feasibility study and tender document. Client and Consultant responsibility Construction and hand over Detail design Construction Tender and contracting Concept design Tender Document Feasibility study Project brief Contractor responsibility Figure : The Integrated Process of Project Designing and Construction in the Design and Build Procurement System (Rosli, A.R, 2006) 3.4 The cost, time and quality of via using Design and Build Method: 3.4.1 Cost Cost for one project of building is very important. In each of the procurement it has their special way to price the cost of a building. In case of design and build, cost is fixed at the tender stage and is subject to design changes, normally it is often higher than the traditional contracting system. Comparison between the design build procurement and traditional procurement, traditional procurement design will be completed during tender stage and it will set up a high level of price certainty except for the fluctuations in the cost of labor and materials. The reason often is higher than the traditional contracting system is because once the tender is accepted, the tender price will be the final contract sum. It is not subject to change, unless there are variations required or instructed by the client. Such additional cost also cannot be avoided because under this procurement system the contractor will to take much of the financial risk. 3.4.2 Time In design and build procurement also know fast-tracking orbuild-it-fast project. So that it is suitable for the private clients, who want quick return on their investment, especially for commercial projects. The projects can be procured by negotiation rather than competition. This is because the design and build procurement save a lot of time depends on traditional procurement. By the way, traditional methods are most suitable for both public and private clients who want to control the stipulated overall time for the construction projects. All the operations are subject to considerable scrutiny and governed by fairly strict procedures especially in government funded development agencies. 3.4.3 Quality In Design and Build procurement the whole construction process (pre and post contract works) is undertaken by only one party which will slightly affect the quality level of the construction project. Design and build method is also suitable to the projects that need early completion, so the quality of the work will be affected. Its compared to the traditional method, traditional method It produce the highest quality of work. The project is usually competitively tendered to a contractor before work starts on a lump sum basis. The design will be done before the commencement of construction and thus, the quality of work will be higher. Each process of construction is undertaken by different parties having varied expertise in the building team. 3.5 Advantages Disadvantages of Design and Build Method: In case of advantage of design and build procurement in construction industry, the advantage is it is suitable for all clients, including inexpert clients and those requiring distance from the project. By the way It is also cost certainty and faster track. Beside the disadvantage is it is not suitable for complex buildings and uncertain or developing client brief. 4.0 d) Procurement using Integrated or Partnering Method 4.1 Introduction of Integrated or Partnering Method: Integrated or Partnering methods of procurement also can know as collaborative procurement. What is an Integrated and Partnering method? It is a form of procurement suited to large projects and a long term commitment between two or more organisations for the purpose of achieving specific business objectives by maximising the effectiveness of each participants resources. (Jack W E Masterman, 2002) Besides that, it also is about working as a team, regardless of organisation or location to achieve and to meet a clients needs. In construction industry, the Integrated or Partnering methods is intended to focus the participants of a project is attentive to delivering a project on time, to budget and to quality. (Jack W E Masterman, 2002) This procurement methods will enables team building and measurement and improvement of team performance on a project to project basis. Other than that, it also knows as a parallel or single responsibility procurement system where the client will only need to deal with a single organisation for both the designing and constructing the proposed project. In addition, the method is also to ensure that the contractors and consultants fully involve into the Integrated and Partnering process. Furthermore, the general approach that using procurement using Integrated or Partnering methods is for the client organisation, consultants, contractors and selected sub-contractors to sign a partnering agreement and can be a legal contractual agreement or regular contracts can be in place with the partnering objectives set down in a separate charter. In this situation, the role of contractor will have to engage and be responsible for design and construction teams for the clients project. Under this method, the clients consultants will prepare a tender or bidding document that include the project brief and clients requirements by information giving by client. After that, the consultant will start invite a number of contractor to bid for the project. For submitting tenders, the invited contractor will produce their own design, construction and cost proposal. Usually the contractor that successful in bidding will into a contract based on lump sum price and a period of time that already fixed. 4.2 The cost, time and quality of via using Integrated or Partnering Method: 4.2.1 Cost The Integrated or Partnering methods will help to reduce the cost of projects of the client. Although these are difficult to quantify accurately as there is a very wide range of percentage savings reported worldwide. Besides that, additional costs are incurred by all partners as a result of the need to hold workshops and to train stuff and also as a result of the expenditure on extra management time. There is little doubt, however, that Integrated or Partnering method will produce greater reductions over cost than other procurement methods. 4.2.2 Time The period of construction and design are reduced and sometime are shortened because the there are good relationship between consultant, contractor and client and with a good briefing about project by client and consultant and contractor can calculate the amount of the project needed and design a projects due to client requirements. Using this method can save a lot of time and select the most 4.2.3 Quality Using the Integrated or Partnering methods, the quality of the final product is improved and safety standards are heightened. This is because mutually beneficial total quality management scheme can be jointly implemented which mean they are good in coordinate their work due to their specialist and can deliver the projects well and quality of the project will increase due to their efficiency. 4.3 Advantages Disadvantages of Integrated or Partnering method: 4.3.1 Advantages of Integrated or Partnering method Conflict among all of the members of the project team, and particularly between client and contractor and contractor and subcontractor or supplier, is reduced, as the number of disputes and claim. Communication between all members of the project team is improved, and the establishment of mutual objectives ensures that the clients needs and objective are known and understood by all of those involved. The achievement of more efficient working and greater productivity that has been recorded as a result of the principle of continuous improvement will benefit all participants in their general activities as well as the specific projects with which they are involved. When involved in Integrated or Partnering methods, the participants should benefit from the increased amount of innovative thinking and research and development that can be carried out as a result of sharing ideas and pooling resources. Contractors, when involved in Integrated or Partnering methods, are able to rely on proportion of their annual workload being assured for at least the duration of the partnering programmed, and the costs normally associated with tendering for the amount of work in the programmed will not be incurred. 4.3.2 Disadvantages of Integrated or Partnering method There is always the possibility that the client will not be able, or may not wish, to honour the arrangement to provide as much work as was originally envisaged, leaving the other partners with voids in their order books which they may find difficult to fill. The relationships built up during the partnered projects can lead to cosy associations which do not encourage new ideas or a dynamic approach to the management of the project. Team members, when returning to their parent organisations, may find that there has been a hiatus in their career progression and that they have difficulty in acclimatising to the different culture. Confidentiality can be compromised as a result of the opening up of information that is normally restricted to the organisations from which it originated. Maintaining the commitment of staff, and particularly senior management, especially during the early stages of a project or programme when the benefits of partnering have not yet become evident, can be problematic and may even prove to be impossible. Difficulties can arise as a result of conflicts that may occur between the partnering charter or framework, which usually are not intended to have any legal standing, and the terms and conditions of the formal contracts between the various parties involved in the projects.

Arctic National Wildlife Refuge Dispute

Arctic National Wildlife Refuge, or ANWR, is a refuge geared toward preserving national wildlife in northeastern Alaska. ANWR is about 19 million acres, in space, and contains a potential drilling spot for oil and petroleum. The potential drilling spot is a small area known as the 10-02 Area. It is only 1. 5 million acres, or 8%, of ANWR, would even be considered for development (What is ANWR). The controversy surrounding ANWR is whether to drill or not to drill into the 10-02 area. Some people want to preserve the wilderness and to find more fuel-efficient technologies.Others want to lower gas prices and to create more job opportunities. If the government decides to drill for oil, it could possibly lead to about 17 billion barrels of oil, to last the United States for the next 20 years. According to the official ANWR website, Prudhoe Bay is located 60 miles west of ANWR and has produced about 10 billion barrels of oil in the past 20 years. It is currently producing about 1. 4 millio n barrels a day, but is slowly declining; this induces the need for a new source. The northeastern part of ANWR is America’s best opportunity in finding another oil and gas field the size of Prudhoe Bay.The coastal plain of ANWR could produce up to 1. 5 million barrels of oil a day and would save the U. S. $14 billion a year in imports (Making the Case). 75% of Alaskans want to drill in the designated ANWR area, 10-02. They feel that it could possibly relieve Americans of their foreign dependency for imported oil and petroleum. The United States currently spends up to $330 billion on foreign oil imports, not including the money used to protect and acquire it. The total area of area10-02 only amounts to 8% of ANWR’s total area, which is 1. million acres. Out of the 1. 5 million acres considered for development, only 2,000 acres of the Coastal Plain would actually be affected, which is less than half of one percent (Top Ten). Drilling in ANWR would also create anywhere f rom 250,000 to 750,000 job opportunities, as well as an opportunity to better the economy. Drilling in ANWR also has no impact on wildlife. This can be proven by the fact that the Central Arctic Caribou Herd that migrates through Prudhoe Bay has grown from 3,000 to its current population of about 32,000 healthy caribou.The total amount of oil that is expected from ANWR estimates from 9 to 16 billion barrels (Making the Case). There is also an underside to drilling in ANWR. Although it would considerably lower gas prices, it would take approximately ten years for the oil to actually reach the marketplace. Clara Tsang argues that instead of drilling in ANWR, the government should produce more energy-efficient technologies. She also states that during the peak of drilling, only 876,000 barrels of oil will be produced a day. That is not enough oil to significantly reduce world oil prices.She states that the 2000 acres designated for drilling, Area 10-02, only accounts for where the actu al equipment will be, not including the areas of the oil reservoirs. Lastly, Tsang argues the destruction of moral and spiritual grounds for conserving a place for meditation and inspiration (Tsang). On the official website for the Defenders of Wildlife, it states that we shouldn’t industrialize a natural treasure (Arctic National). It also states that if drilling became imminent that destroy the coastal plain of the Beaufort Sea, the most sensitive area of the entire refuge.They believe in preserving the national wildlife’s habitat, instead of tampering with an arctic, subarctic and boreal ecosystem (Wildlife Impacts). According to the ANWR official website, Louisiana can be greatly affected by drilling in ANWR. It would create approximately 14,800 jobs in module and facility construction, exploration, and production engineering. It also states that Louisiana has already been greatly affected by Prudhoe Bay. Since 1980, Louisiana has spent almost $400 million in Prudh oe Bay. Also, over 850 Louisiana vendors are doing business in Alaskan oil fields.An example is the Prudhoe Bay gas expansion module GHX-2, produced in New Iberia, in 1994 (What Development). Drilling in ANWR could greatly benefit the United States. It could boost the economy, decrease foreign oil trade, lower oil prices worldwide and create about 750,000 jobs, throughout the United States. On the other hand it could ruin ecosystems and tamper with wildlife’s habitats, for a less than significant amount of oil. Either way a decision has to be made. Prudhoe Bay is steadily declining. The question is whether the government wants to ontinue paying the high price of foreign imports or drill at ANWR and potentially ruin fragile and ecologically sensitive ecosystems.Works Cited â€Å"Arctic National Wildlife Refuge. † Defenders. org. 2008. Defenders of Wildlife. 19 Oct. 2008. . â€Å"Making the Case for ANWR†. ANWR. org 2008. Frontier Communications. 19 Oct. 2008. < ; http://www. anwr. org/Background/Making-the-Case-for-ANWR. php>. â€Å"Top Ten Reasons to Support ANWR Development. † ANWR. org 2008. Frontier Communications. 19 Oct. 2008. < http://www. anwr. rg/ANWR-Basics/Top-ten-reasons-to-support-ANWR-development. php>. Tsang, Clara. â€Å"Arguments Against Drilling in ANWR. † 19 Oct. 2008. . â€Å"What Development of Alaska’s Arctic Coastal Plain Means to Louisiana. † ANWR. org 2008. Frontier Communications. 19 Oct. 2008. . â€Å"What is ANWR and Where is it? † ANWR. org 2008. Frontier Communications. 19 Oct. 2008. < http://www. anwr. org/ANWR-Basics/What-is-ANWR-and-where-is-it. php>. â€Å"Wildlife Impacts from Oil Drilling in the Refuge. † Defenders. org. 2008. Defenders of Wildlife. 19 Oct. 2008. .

Breathing walls technology

In developed countries, people spend 90% of their lives inside buildings. During this time, the nature of the enclosed environment has direct impact on the lives of the occupants. It is therefore imperative that the buildings have conducive environment where this will impact the lives of the occupants. The buildings that are there today have serious problems about the indoor air quality. The US Environment Protection Agency (EPA) agrees to the fact that 30% of new or buildings which have been renovated have IAQ problems.This has been ranked as the most prominent problem. In regions where there is high climates like Japan, there has been need to utilize breathing walls technology; this has been achieved easily with the use of passive ventilation done at the surfaces of walls, an approach which has been deemed as a success. The installations of systems such as these have been seen to be effective and provide an easy way of providing a healthy and comfortable environment with higher ene rgy efficiency.With this in mind, this paper will therefore look at the development of â€Å"Breathing Wall† technology which is constructed using Aluminum sheets that form a multiple air-layered architecture. Studies that have been done in the past allude to the fact that passive ventilation systems can provide sufficient thermal insulation and provide a way where moisture can be transmitted for temperature-climate regions even when the amount of air being infiltrated increases as a result of strong wind in the outside. In this study, there is a practical passive ventilation system which is being considered.In this study, breathing walls were installed on the opposite sides of a scale mock-up house constructed outdoors and the properties of natural ventilation, thermal insulation, moisture transmission and indoor climate in natural weather conditions were analyzed extreme. Literature review There have been a lot of strategies that have been embraced so that the removal of ai r pollutants can be achieved. All in all, there are design strategies that have been employed from time immemorial in the quest to get conducive working and living environments for buildings.The first line of attack was the use of avoidance of products that contain solvents, glues and plastics. There is an increasing production of commercial products like paint, glues, materials, and systems. Exclusion is also another strategy that has been used in the past to eradicate corrosive elements from the walls of the buildings. Exclusion is another strategy that can be used to provide IAQ. The control of radon, as an example, requires that there be an airtight floor and basement system. The exclusion of radon from the interior environment must be a serious consideration for the design of an IAQ.The ventilation of living areas does aid radon control, but is important to have a design and build the ground floor or basement as airtight as possible so that penetration to the building can be av oided. The use of systems approach is another strategy that can be used to provide IAQ. The problem with this is the fact that these strategies cannot be used on their own. There is need to have a holistic approach in the provision of internal air quality. In the past there has been the approach of using offgas material and this has been a necessary approach.However, ventilation, air barriers, humidity control, and high surface temperatures can work together so that better IAQ can be achieved. This is better than using either approach independently. The use of â€Å"atmungsfaehig† or breathable walls then promised to be a better approach towards the getting of internal air quality. This was recommended by designers of healthy housing. This was especially recommended by the Baubiologie; the term is itself used in an imprecise manner in the English language (George, & Ritz, 1994). There has been confusion in the use of the term.A review of the literature shows that what constit utes a â€Å"breathing wall† is still not clear. Although breathing wall implies good flow of air, this is not always the case. When used scientifically, this term means that there is an open flow of vapor diffusion. This combination of properties makes it possible for a large amount of water vapor to be absorbed quickly. This regulates room climate and hence indoor air quality. Although other gases are also capable of diffusing through walls, water vapor is one of the very important determinants of air quality in a room. They determine the healthy of a room.In the design of healthy houses, the design of interior partitions and internal design is based on making sure that water vapor breathability is achieved. Breathing wall infrastructure The breathing wall is composed of a component which is core and is constructed using aluminum foils, and interior/exterior materials. The use of aluminum foils is chosen because they have high reflectance and low remittance thus they can co unteract the loss of thermal insulation capability due to the presence of several air layers. There are factors which must be considered in the construction of the breathing wall.These factors include: i. The number of internal fouls that should be included in the wall ii. The thickness of the wall is of paramount importance iii. The rate of flow of air through the wall should also be considered. This is important because it influences the thermal insulation capability. iv. The diameter of the hole and the spacing of each of the foil sheet is also important consideration as it influences the air flow rate and the transmission of the moisture (Jonathan, & Woodha, 1997). Design constraints There are design constraints which are used in the construction of the breathing wall technology.They are as follows: i. Continual indoor ventilation under natural conditions using no air-conditioning equipment. ii. The entire surface of the wall should be able to give proper ventilation (air infilt ration), which is controlled by heat recovery inside the wall in order to lower heat losses. iii. High thermal insulation capability iv. There should be no disturbance of the indoor air distribution v. There should be prevention of internal condensation by controlling the amount of moisture passing through the inner structure of the wall.

The Pros and Cons of DNA Profiling Essay - 2582 Words

The Positive And Negative Effects of DNA Profiling nbsp;nbsp;nbsp;nbsp;nbsp;Genetic engineering has developed and blossomed at a frightening rate in the last decade. Originating as merely an area of interest for scientists, genetic engineering has now become an area of which all people should be somewhat knowledgeable. nbsp;nbsp;nbsp;nbsp;nbsp;DNA profiling has many uses, both positive and negative, in our society. Aside from its usefulness in many legal investigations, DNA profiling can be used in the workplace to discriminate against employees whose profiles could pose a financial risk. For example, genetic technology can and has been used to determine the capacity of a person to contract certain diseases, such as†¦show more content†¦Lawyers need to increase their scientific knowledge and keep up with ongoing research in order to competently question and understand scientific evidence put forth. nbsp;nbsp;nbsp;nbsp;nbsp;But these do not represent the only possible downfalls of DNA profiling in criminology. The involuntary seizure of ones blood or hair undermines the constitutional rights guaranteed to all citizens by the Fourth Amendment (protection from unreasonable searches and seizures). Nevertheless, many argue that a DNA sample taken from a suspect could lead to an indictment or release of the individual and, thus, warrants an exception from the Fourth Amendment. Besides, one could make a plausible argument that, once held in custody, the seizure of a persons strand of hair does not violate a suspects Fourth Amendment rights or rights of privacy because the hair is visible. nbsp;nbsp;nbsp;nbsp;nbsp;However, the use of DNA profiling does not end in criminal investigations. DNA testing has ventured out of the courtroom in an effort to show a genetic link between race and violent tendencies. If successful, this link will do nothing but justify prejudice attitudes toward minorities, particularly the black race. Furthermore, such biological approaches towards criminality do not take into account sociological factors, such as poverty, and would inevitably lead to the practice of controllingShow MoreRelatedDna Analysis : Dna Profiling725 Words   |  3 PagesTammy Venhuda Mrs. Paris P.4 English 7-8 10-20-17 DNA Profiling Hook: Have you ever thought about your personal DNA and why it is important to you? Besides showing factors of how you grow, develop, and function, your DNA has more to it. What is DNA profiling? DNA profiling is when someone uses DNA to identify someone, make sure someone is not being wrongly accused, or to claim criminals. But there are pros and cons to DNA profiling. This is because some people are for it and others are againstRead MoreShould Federal Agents Be Allowed For Collect Dna From Anyone Arrested?1228 Words   |  5 Pagesto collect DNA from anyone arrested? This is a controversial issue. In my opinion, DNA is a very powerful and useful tool because many sex crimes go unsolved because of lack of evidence, but if federal agents can look in a database where DNA samples are stored and compare it to anyone who was arrested especially those who committed sex crimes more crimes would be solved. Many say DNA testing violates suspects rights under the Fourth Amendment of the Con stitution of the United States. DNA testing hasRead MoreSolving Cases with Forensic DNA Analysis975 Words   |  4 PagesForensic DNA analysis is still a relatively new method that has been used to solve cases such as crimes and paternity tests. This method of forensic evaluation is examined by using genetic material, DNA, an acronym for deoxyribonucleic acid. Although each individual’s DNA differs from someone else’s, with the exception of identical twins, around 99.9% of DNA is the same in each person (The FBI DNA Laboratory). Therefore, in order to identify the genetic profile of the individual being analyzedRead MoreImpact Of Dna Fingerprinting3430 Words   |  14 PagesDNA profiling technologies have had a considerable impact on how forensic science and criminal investigation have been understood, carried out, and regulated in the last 25 years. Current methods of forensic DNA profiling (known also as DNA fingerprinting and DNA typing), based on Polymerase Chai n Reaction (PCR) amplifications of a varying number of Short Tandem Repeat (STR) loci found at different locations on the human genome, are regularly described as constituting the â€Å"gold standard for identification†Read MoreEthical and Legal Issues with DNA Profiling2693 Words   |  11 Pagesacidity (DNA) fingerprint scanning service is really a fundamental technique which is used all through the global communities every day. The procedure associated with DNA fingerprint scanning service was initially produced by the geneticist, Alec Jefferys, in the University of Leicester situated in England, in the year 1984 (as cited in Lampton, 1991). Both primary kinds of DNA utilized in the actual profiling procedure consist of mitochondrial as well as nuclear DNA (Adams, 2005). DNA fingerprintRead MoreGene Technology And Its Effects On Agriculture1819 Words   |  8 Pagesmaterial, including altering DNA in an organism to supress or enhance its activity, or combining genetic ma terial from different species. Whilst biotechnology in the older times refers to how people use biological information to have effects on agricultural like crops and such. Not specific or in-dept. like manipulating genetic material. 2. 3. A restriction enzyme is also known as restriction endonuclease, which is an enzyme that cus DNA at a particular sequence. In DNA technology, there have beenRead MoreAdvancement And Recommendations For Fingerprinting1519 Words   |  7 Pagesintroduced in the field of forensics have taken crime investigation to an entirely new dimension. The uniqueness of fingerprints is of common knowledge. The common phrase â€Å"as unique as a fingerprint† is quite literal in the sense. There are both pros and cons of the fingerprinting system. Although it is surrounded by some flaws with respect to the accuracy, ethical and legal issues, it has proven to be quite a beneficial tool in forensics. Criminalistics: An Introduction Simply put, according to theRead MoreThe Effects of the Human Genome Project on Society1697 Words   |  7 PagesPractically? And do the pros outweigh the cons? This paper is intended to support the idea that the mapping of the human genome through the Human Genome Project will ultimately have more benefits than deterrents to medical science and life as it is known today. In 1990, a government funded research team set out on what has been considered one of the greatest and most significant endeavors of the century; the complete mapping of the human genome. A genome is essentially all of the DNA in any given organismRead MoreAnnotated Bibliography On Criminal Justice System3274 Words   |  14 Pagespermits their actions. However, the current legal framework in England and Wales do not have provision for such and there are a lot of interplaying factors to be considered in order to allow such practices. This paper seeks to look at some of the pros and cons as well as the competing interests that hinder set up of legal framework for police and personnel operating under cover. Most frequently, undercover police are bound to act in way that may wrong people. There actions are marred by several circumstancesRead MoreManagement Course: Mba−10 General Management215330 Words   |  862 Pagesdemonstrators in the capital city of Rangoon (the demonstrators had been protesting government repression!). Over the next several months, police killed nearly 3,000 people who had been protesting government policies. When hundreds of thousands of pro-democracy demonstrators staged a protest rally at a prominent pagoda in Rangoon, Suu Kyi spoke to the crowd. Overnight she became the leading voice for freedom and democracy in Burma. Today she is the most popular and influential leader in her country