Evaluating late payment-induced waste in South Africa through lean construction principles
- Authors: Akuffo-Ntow, Eric Ayesu
- Date: 2016
- Subjects: Construction industry -- South Africa -- Finance , Lean manufacturing -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/8867 , vital:26437
- Description: Central to the sustainable and competitive growth of the South African construction industry is a predictable cash flow through on time payment by clients to contractors. However, chronic late payments, a recurring problem in the industry, especially in the public sector, is bringing untold hardship to contractors by derailing their competitiveness and also eroding the trust among the supply chain partners to the extent that some firms end up closing business in the industry. The situation is viewed from the lean construction perspective as an obstacle that is preventing the accrual of the required value to project parties in the construction industry. This research addresses the causes of late payments to contractors and the role of the quantity surveyor (QS) in terms of influencing early payment from a lean construction perspective. A mixed method approach was used for compiling the primary data for the study. Sequentially, one hundred and two (102) quantitative and twelve (12) interview questionnaires were administered to selected contractors and construction professionals working predominantly on public sector projects. The findings revealed that the approval process for evaluation and certification by the client- appointed agent and intermediary institutions is taking longer than contractually allowed, with parties independently undertaking their evaluation prior to the certification date. This is found to be adverse to achieving consensus on the values of the works for authorisation. Other significant barriers are the lack of funds to authorise payment, random auditor general’s documentation changes, lack of administrators’ system integration and capacity to handle cyclical payment processing. Also, contractors have been found to be in default of timeously submitting complete claim documents. It is therefore recommended that the client agents should partner with the contractor in regular design and documentation reviews, arranging the payment process and should also meet jointly to prepare monthly evaluations. In addition, contractors should be mentored from the onset of the project regarding all the necessary documentation and supporting documents that will be required by the client to ensure that payment approvals are not delayed. The payment authori-sation agent’s capacity should be enhanced through training and improved powers as a singular point of control to perform efficiently and their systems and processes should be integrated to ensure that all parties are implementing the same protocols.
- Full Text:
- Date Issued: 2016
- Authors: Akuffo-Ntow, Eric Ayesu
- Date: 2016
- Subjects: Construction industry -- South Africa -- Finance , Lean manufacturing -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/8867 , vital:26437
- Description: Central to the sustainable and competitive growth of the South African construction industry is a predictable cash flow through on time payment by clients to contractors. However, chronic late payments, a recurring problem in the industry, especially in the public sector, is bringing untold hardship to contractors by derailing their competitiveness and also eroding the trust among the supply chain partners to the extent that some firms end up closing business in the industry. The situation is viewed from the lean construction perspective as an obstacle that is preventing the accrual of the required value to project parties in the construction industry. This research addresses the causes of late payments to contractors and the role of the quantity surveyor (QS) in terms of influencing early payment from a lean construction perspective. A mixed method approach was used for compiling the primary data for the study. Sequentially, one hundred and two (102) quantitative and twelve (12) interview questionnaires were administered to selected contractors and construction professionals working predominantly on public sector projects. The findings revealed that the approval process for evaluation and certification by the client- appointed agent and intermediary institutions is taking longer than contractually allowed, with parties independently undertaking their evaluation prior to the certification date. This is found to be adverse to achieving consensus on the values of the works for authorisation. Other significant barriers are the lack of funds to authorise payment, random auditor general’s documentation changes, lack of administrators’ system integration and capacity to handle cyclical payment processing. Also, contractors have been found to be in default of timeously submitting complete claim documents. It is therefore recommended that the client agents should partner with the contractor in regular design and documentation reviews, arranging the payment process and should also meet jointly to prepare monthly evaluations. In addition, contractors should be mentored from the onset of the project regarding all the necessary documentation and supporting documents that will be required by the client to ensure that payment approvals are not delayed. The payment authori-sation agent’s capacity should be enhanced through training and improved powers as a singular point of control to perform efficiently and their systems and processes should be integrated to ensure that all parties are implementing the same protocols.
- Full Text:
- Date Issued: 2016
Factors affecting the acceptance and meaningful use of picture archive and communication systems by referring clinicians in private practice
- Authors: D'Assonville, Gustav Andre
- Date: 2016
- Subjects: Picture archiving and communication systems in medicine , Imaging systems in medicine
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/4688 , vital:20648
- Description: A Picture Archive and Communication System (PACS) is a health information technology that facilitates the electronic storage, transmission, presentation and processing of digital medical-imaging datasets. The benefits of PACS have been well-documented. It provides a means to replace traditional film-based workflows and their inherent limitations. Referring clinicians’ acceptance is a critical factor in the overall success of a PACS implementation; and given the financial implications of project failure, research into physician acceptance and meaningful use is crucial. Very few PACS acceptance studies have focused on the referring clinicians, and even less in the context of the private sector. Therefore, the problem that this research aims to address is: There is a lack of understanding on which factors influence PACS acceptance and the meaningful use thereof by referring clinicians in private practice. This explorative study follows an embedded mixed methodology approach in order to meet the research objectives, favouring a qualitative method of inquiry with the support of a quantitative strand. Electronic questionnaires were distributed to private practice referring clinicians to probe the aspects related to PACS acceptance and its meaningful use. The conceptual framework, as devised by Paré and Trudel (2007), was used as a theoretical lens to categorize and discuss the research results in terms of Project, Technological, Organizational and Behavioural factors that affect PACS acceptance and its meaningful use. The findings showed good acceptance rates, which is in line with other research conducted in this field, including research done in the public sector. Technical and Organizational factors were the most prevalent. An extension of the above-mentioned theoretical framework was proposed to assist in maintaining positive results after the project Implementation phase has been completed. This research expands the Information Technology PACS body of knowledge – by identifying both the technical and the non-technical factors that are crucial in private practice referring doctor acceptance and meaningful use. By addressing these factors, institutions can improve the likelihood of PACS project success in private practice settings. Maximising referring doctor acceptance and meaningful use could also give private practices a competitive advantage over their competitors.
- Full Text:
- Date Issued: 2016
- Authors: D'Assonville, Gustav Andre
- Date: 2016
- Subjects: Picture archiving and communication systems in medicine , Imaging systems in medicine
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/4688 , vital:20648
- Description: A Picture Archive and Communication System (PACS) is a health information technology that facilitates the electronic storage, transmission, presentation and processing of digital medical-imaging datasets. The benefits of PACS have been well-documented. It provides a means to replace traditional film-based workflows and their inherent limitations. Referring clinicians’ acceptance is a critical factor in the overall success of a PACS implementation; and given the financial implications of project failure, research into physician acceptance and meaningful use is crucial. Very few PACS acceptance studies have focused on the referring clinicians, and even less in the context of the private sector. Therefore, the problem that this research aims to address is: There is a lack of understanding on which factors influence PACS acceptance and the meaningful use thereof by referring clinicians in private practice. This explorative study follows an embedded mixed methodology approach in order to meet the research objectives, favouring a qualitative method of inquiry with the support of a quantitative strand. Electronic questionnaires were distributed to private practice referring clinicians to probe the aspects related to PACS acceptance and its meaningful use. The conceptual framework, as devised by Paré and Trudel (2007), was used as a theoretical lens to categorize and discuss the research results in terms of Project, Technological, Organizational and Behavioural factors that affect PACS acceptance and its meaningful use. The findings showed good acceptance rates, which is in line with other research conducted in this field, including research done in the public sector. Technical and Organizational factors were the most prevalent. An extension of the above-mentioned theoretical framework was proposed to assist in maintaining positive results after the project Implementation phase has been completed. This research expands the Information Technology PACS body of knowledge – by identifying both the technical and the non-technical factors that are crucial in private practice referring doctor acceptance and meaningful use. By addressing these factors, institutions can improve the likelihood of PACS project success in private practice settings. Maximising referring doctor acceptance and meaningful use could also give private practices a competitive advantage over their competitors.
- Full Text:
- Date Issued: 2016
Influence of increased processing speed on the microstructure evolution and mechanical property relationship in friction stir welding of AA5182-H111 (T500)
- Authors: Bernard, Dreyer
- Date: 2016
- Subjects: Friction stir welding , Aluminum alloys -- Welding
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/7322 , vital:21319
- Description: Friction stir welding of 5xxx series aluminium is generally carried out at low travel speeds, which limits the commercial applications of this process. This manuscript discusses the dynamic eformation characteristics of AA5182-H111 (T500), which allowed a travel speed of 1500 mm/min to be realised. This was achieved by using a spindle speed of 500 rev/min; the same as that required to make a weld of 200 mm/min. The thermal cycles, microstructural evolution due to tool / work-piece interaction, and the local microstructural and mechanical properties of the completed weld are discussed for a travel speed for 200 mm/min and 1500 mm/min. At a rate of 200 mm/min, heat generated due to contact between the shoulder and work-piece surface was transferred ahead of the tool, driving dynamic recrystallization which lowered the flow stress. Hereafter the material entered the stir zone where it was extruded around the pin during a process of continuous dynamic crystallization. At a travel speed of 1500 mm/min, the rate of heat conduction ahead of the tool was not rapid enough, and the material was deformed at low temperatures. A low weld pitch rotations per unit length travelled) was required to ensure that the material was sufficiently strained, to allow the formation of geometric necessary boundaries, which resulted in grain subdivision. The number of high angle grain boundaries was increased through subdivision, thus, increasing the nucleation sites for dynamically recrystallized necklace grains to form. In the absence of heat conduction from the shoulder, the high plastic strain ahead of the tool provided the energy required to drive dynamic recrystallization. Heat was generated from the high plastic strain and during recrystallization, where the stored plastic energy was adiabatically released. Once the material entered the stir zone, the high strain rates associated with the tool rotation which drove dynamic recrystallization that allowed the material to reach high levels of strain, resulted significant grain refinement. The weld zone of the 200 mm/min displayed weld a slight increase in yield strength, with respect to the parent material, due to grain refinement to 10 μm, while the yield strength of the 1500 mm/min weld was significantly increased due to grain refinement to 5 μm. The high weld speed did, however, generate high tensile residual stresses. This work is not only significant for the field of friction stir welding, but also in terms of material processing. The dynamic deformation characteristics associated with Al-5Mg-Mn, alloys which was observed ahead of the tool, is of high value in processes where plastic deformation is applied to improve the mechanical properties of these alloys.
- Full Text:
- Date Issued: 2016
- Authors: Bernard, Dreyer
- Date: 2016
- Subjects: Friction stir welding , Aluminum alloys -- Welding
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/7322 , vital:21319
- Description: Friction stir welding of 5xxx series aluminium is generally carried out at low travel speeds, which limits the commercial applications of this process. This manuscript discusses the dynamic eformation characteristics of AA5182-H111 (T500), which allowed a travel speed of 1500 mm/min to be realised. This was achieved by using a spindle speed of 500 rev/min; the same as that required to make a weld of 200 mm/min. The thermal cycles, microstructural evolution due to tool / work-piece interaction, and the local microstructural and mechanical properties of the completed weld are discussed for a travel speed for 200 mm/min and 1500 mm/min. At a rate of 200 mm/min, heat generated due to contact between the shoulder and work-piece surface was transferred ahead of the tool, driving dynamic recrystallization which lowered the flow stress. Hereafter the material entered the stir zone where it was extruded around the pin during a process of continuous dynamic crystallization. At a travel speed of 1500 mm/min, the rate of heat conduction ahead of the tool was not rapid enough, and the material was deformed at low temperatures. A low weld pitch rotations per unit length travelled) was required to ensure that the material was sufficiently strained, to allow the formation of geometric necessary boundaries, which resulted in grain subdivision. The number of high angle grain boundaries was increased through subdivision, thus, increasing the nucleation sites for dynamically recrystallized necklace grains to form. In the absence of heat conduction from the shoulder, the high plastic strain ahead of the tool provided the energy required to drive dynamic recrystallization. Heat was generated from the high plastic strain and during recrystallization, where the stored plastic energy was adiabatically released. Once the material entered the stir zone, the high strain rates associated with the tool rotation which drove dynamic recrystallization that allowed the material to reach high levels of strain, resulted significant grain refinement. The weld zone of the 200 mm/min displayed weld a slight increase in yield strength, with respect to the parent material, due to grain refinement to 10 μm, while the yield strength of the 1500 mm/min weld was significantly increased due to grain refinement to 5 μm. The high weld speed did, however, generate high tensile residual stresses. This work is not only significant for the field of friction stir welding, but also in terms of material processing. The dynamic deformation characteristics associated with Al-5Mg-Mn, alloys which was observed ahead of the tool, is of high value in processes where plastic deformation is applied to improve the mechanical properties of these alloys.
- Full Text:
- Date Issued: 2016
Influence of the macro-economic environment on the construction sector's contribution to the South African economy, 1984 to 2011
- Authors: Babalola, Adewumi Joseph
- Date: 2016
- Subjects: Construction industry -- Economic aspects Economic development Environmental economics
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/5618 , vital:20916
- Description: The construction sector serves as the engine of growth to the South Africa economy because of its catalytic role in the growth and development of the country. This study focuses mainly on the influence of the macro-economic environment on the contribution of the private sector to construction in the South Africa economy from 1984 to 2011. Government construction work is considered to be an injection into the economy; in this regard, state construction is regarded as public investment in the economy; and therefore, it is anti-cyclic (Keynes, 1936). The aim of this study has been to develop an econometric model for predicting the influence of the macroeconomic environment on the contribution of the private sector to the construction sector in the South Africa economy. The research design adopted in this study was an “ex-post facto” type, otherwise known as a causal-comparative design. The data were extracted from the published sources of the South African National Statistics, namely SARB, Stats SA and Quantec SA. The estimation technique used in this study was the ARDL model using quarterly data from 1984 to 2011. This is because in the construction sector, the influence of the independent variables is always felt over time – rather than all at once. The results of this study show that there is a long run causal relationship between inflation rate, interest rate, real exchange rate, GDP and gdp in the construction sector. The descriptive statistical analysis shows that there is a negative relationship between variables inflation rate and interest rate and the private sector spending in construction. However, economic growth as well as growth in the construction sector has a positive relationship with the private sector spending in construction. Likewise, the real exchange rate and labour productivity in construction have a negative relationship with the private sector’s spending in construction and they are statistically insignificant. The variance decomposition analysis show that the private sector spending in construction explains about 75 per cent of it variations, followed by inflation rate that explains 21 per cent on the average; while the remaining variations, comprising about 4 per cent, were shared among the other independent variables, such as GDP, GDP in construction, the interest rate and the real exchange rate. It was discovered that only the inflation rate does Granger-cause the private sector spending in construction. From the finding it can be concluded that inflation rate is a significant explanatory variable in explaining the variation in the dependent variable during period under review. Policy recommendations are as follows: firstly, the monetary authorities in South Africa should embark on sound policies that would bring about low prices of the construction materials. This would ensure growth and development in the construction sector; secondly, a stimulating development plan that would encourage private sector investment in properties and infrastructural development must be instituted; thirdly, an alternative policy to the present inflation targeting is recommended that would bring about low inflation, high growth, low unemployment and stable exchange rate; fourthly, the present policy on interest rate must be reviewed to allow for more participation in construction projects by the private sectors of the economy; fifthly, due to the fact that fluctuation in the crude oil prices in the international market is one of the major factors causing high inflation rate in South Africa, government must source local alternative products that would bring down prices of construction materials.
- Full Text:
- Date Issued: 2016
- Authors: Babalola, Adewumi Joseph
- Date: 2016
- Subjects: Construction industry -- Economic aspects Economic development Environmental economics
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/5618 , vital:20916
- Description: The construction sector serves as the engine of growth to the South Africa economy because of its catalytic role in the growth and development of the country. This study focuses mainly on the influence of the macro-economic environment on the contribution of the private sector to construction in the South Africa economy from 1984 to 2011. Government construction work is considered to be an injection into the economy; in this regard, state construction is regarded as public investment in the economy; and therefore, it is anti-cyclic (Keynes, 1936). The aim of this study has been to develop an econometric model for predicting the influence of the macroeconomic environment on the contribution of the private sector to the construction sector in the South Africa economy. The research design adopted in this study was an “ex-post facto” type, otherwise known as a causal-comparative design. The data were extracted from the published sources of the South African National Statistics, namely SARB, Stats SA and Quantec SA. The estimation technique used in this study was the ARDL model using quarterly data from 1984 to 2011. This is because in the construction sector, the influence of the independent variables is always felt over time – rather than all at once. The results of this study show that there is a long run causal relationship between inflation rate, interest rate, real exchange rate, GDP and gdp in the construction sector. The descriptive statistical analysis shows that there is a negative relationship between variables inflation rate and interest rate and the private sector spending in construction. However, economic growth as well as growth in the construction sector has a positive relationship with the private sector spending in construction. Likewise, the real exchange rate and labour productivity in construction have a negative relationship with the private sector’s spending in construction and they are statistically insignificant. The variance decomposition analysis show that the private sector spending in construction explains about 75 per cent of it variations, followed by inflation rate that explains 21 per cent on the average; while the remaining variations, comprising about 4 per cent, were shared among the other independent variables, such as GDP, GDP in construction, the interest rate and the real exchange rate. It was discovered that only the inflation rate does Granger-cause the private sector spending in construction. From the finding it can be concluded that inflation rate is a significant explanatory variable in explaining the variation in the dependent variable during period under review. Policy recommendations are as follows: firstly, the monetary authorities in South Africa should embark on sound policies that would bring about low prices of the construction materials. This would ensure growth and development in the construction sector; secondly, a stimulating development plan that would encourage private sector investment in properties and infrastructural development must be instituted; thirdly, an alternative policy to the present inflation targeting is recommended that would bring about low inflation, high growth, low unemployment and stable exchange rate; fourthly, the present policy on interest rate must be reviewed to allow for more participation in construction projects by the private sectors of the economy; fifthly, due to the fact that fluctuation in the crude oil prices in the international market is one of the major factors causing high inflation rate in South Africa, government must source local alternative products that would bring down prices of construction materials.
- Full Text:
- Date Issued: 2016
Information security assurance model for an examination paper preparation process in a higher education institution
- Authors: Mogale, Miemie
- Date: 2016
- Subjects: Computer security -- Management -- Examinations , Computers -- Access control
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/8509 , vital:26377
- Description: In today’s business world, information has become the driving force of organizations. With organizations transmitting large amounts of information to various geographical locations, it is imperative that organizations ensure the protection of their valuable commodity. Organizations should ensure that only authorized individuals receive, view and alter the information. This is also true to Higher Education Institutions (HEIs), which need to protect its examination papers, amongst other valuable information. With various threats waiting to take advantage of the examination papers, HEIs need to be prepared by equipping themselves with an information security management system (ISMS), in order to ensure that the process of setting examination papers is secure, and protects the examination papers within the process. An ISMS will ensure that all information security aspects are considered and addressed in order to provide appropriate and adequate protection for the examination papers. With the assistance of information security concepts and information security principles, the ISMS can be developed, in order to secure the process of preparing examination papers; in order to protect the examination papers from potential risks. Risk assessment form part of the ISMS, and is at the centre of any security effort; reason being that to secure an information environment, knowing and understanding the risks is imperative. Risks pertaining to that particular environment need to be assessed in order to deal with those appropriately. In addition, very important to any security effort is ensuring that employees working with the valuable information are made aware of these risks, and can be able to protect the information. Therefore, the role players (within the examination paper preparation process (EPPP)) who handle the examination papers on a daily basis have to be equipped with means of handling valuable information in a secure manner. Some of the role players’ behaviour and practices while handling the information could be seen as vulnerabilities that could be exploited by threats, resulting in the compromise in the CIA of the information. Therefore, it is imperative that role players are made aware of their practices and iv behaviour that could result in a negative impact for the institution. This awareness forms part and is addressed in the ISMS.
- Full Text:
- Date Issued: 2016
- Authors: Mogale, Miemie
- Date: 2016
- Subjects: Computer security -- Management -- Examinations , Computers -- Access control
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/8509 , vital:26377
- Description: In today’s business world, information has become the driving force of organizations. With organizations transmitting large amounts of information to various geographical locations, it is imperative that organizations ensure the protection of their valuable commodity. Organizations should ensure that only authorized individuals receive, view and alter the information. This is also true to Higher Education Institutions (HEIs), which need to protect its examination papers, amongst other valuable information. With various threats waiting to take advantage of the examination papers, HEIs need to be prepared by equipping themselves with an information security management system (ISMS), in order to ensure that the process of setting examination papers is secure, and protects the examination papers within the process. An ISMS will ensure that all information security aspects are considered and addressed in order to provide appropriate and adequate protection for the examination papers. With the assistance of information security concepts and information security principles, the ISMS can be developed, in order to secure the process of preparing examination papers; in order to protect the examination papers from potential risks. Risk assessment form part of the ISMS, and is at the centre of any security effort; reason being that to secure an information environment, knowing and understanding the risks is imperative. Risks pertaining to that particular environment need to be assessed in order to deal with those appropriately. In addition, very important to any security effort is ensuring that employees working with the valuable information are made aware of these risks, and can be able to protect the information. Therefore, the role players (within the examination paper preparation process (EPPP)) who handle the examination papers on a daily basis have to be equipped with means of handling valuable information in a secure manner. Some of the role players’ behaviour and practices while handling the information could be seen as vulnerabilities that could be exploited by threats, resulting in the compromise in the CIA of the information. Therefore, it is imperative that role players are made aware of their practices and iv behaviour that could result in a negative impact for the institution. This awareness forms part and is addressed in the ISMS.
- Full Text:
- Date Issued: 2016
Management of material waste and cost overrun in the Nigerian construction industry
- Authors: Saidu, Ibrahim
- Date: 2016
- Subjects: Construction industry -- Materials management -- Nigeria , Construction industry -- Nigeria -- Management
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/3792 , vital:20463
- Description: While wastage of materials has become a serious problem requiring urgent attention in the Nigerian Construction Industry, cost overrun is a problem, which affects 90 percent of the completed projects in the world; the argument on how to reduce/eliminate cost overrun has been on-going for the past 70 years; as the on-site wastage of materials leads to increases in the final project cost. Studies from different parts of the world have shown that construction-material waste represents a relatively large percentage of the production costs. Consequently, as a result of low levels of awareness, the Nigerian construction industry pays little attention to the effects of generated material waste on cost overruns. Thus, this research aimed to investigate the relationship between material waste and cost overrun in the Nigerian construction industry. A comprehensive review of the related literature revealed that all material waste causes are related to cost overrun causes at both pre-contract and post-contract stages of a project; but not vice versa. The mixed method (quantitative and qualitative) approach that is rooted in the positivist paradigm was adopted for this study. Abuja, the federal capital territory of Nigeria was the selected geographical scope of this research, out of which thirty-one (31) construction projects were purposeful selected (projects to the value of 100 million Rand/1.6 billion Naira and above).The research instrument was an interview guide used in conjunction with a tick box. Other sources of data included field investigation (measurement of onsite material waste) and the collection of archival records from bills of quantities, project records, and specifications. Analyses of the findings lead to the conclusion that a relationship exists between material waste and cost overrun; at the pre-contract and at the post-contract stages of a project. The implication is that an increase in material wastage on-site leads to a corresponding increase in the amount of cost overrun, regardless of the percentage allowance for material waste in the process of bill preparation. The study also concluded that the average percentage contribution of material waste to project-cost overruns is four (4) percent. Material-waste sources, causes, and control measures were found to have significant effects (very high, high, medium, low, and very low), in causing or minimising cost overruns at both pre-contract and post-contract stages of projects. The research has developed a conceptual model for the management of material waste and cost overruns in the construction industry based on the results and informed by the theoretical framework. The research has also developed a mathematical model for quantifying the amount of material waste to be generated by a project; as well as a mathematical equation for the effective management of material waste and cost overrun for projects. The study has achieved its aim of establishing an understanding of the issues leading to the relationship between material waste and cost overruns, as well as their management in the Nigerian construction industry. The study recommends that the management of material waste and cost overrun should be revised, based on the findings of this research and included as part of the procurement process. The mathematical models for quantification of onsite material waste, and the mathematical equation for managing material waste and cost overruns developed in the study, could be usefully adopted to improve management of material waste and cost overrun in the Nigerian construction industry.
- Full Text:
- Date Issued: 2016
- Authors: Saidu, Ibrahim
- Date: 2016
- Subjects: Construction industry -- Materials management -- Nigeria , Construction industry -- Nigeria -- Management
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/3792 , vital:20463
- Description: While wastage of materials has become a serious problem requiring urgent attention in the Nigerian Construction Industry, cost overrun is a problem, which affects 90 percent of the completed projects in the world; the argument on how to reduce/eliminate cost overrun has been on-going for the past 70 years; as the on-site wastage of materials leads to increases in the final project cost. Studies from different parts of the world have shown that construction-material waste represents a relatively large percentage of the production costs. Consequently, as a result of low levels of awareness, the Nigerian construction industry pays little attention to the effects of generated material waste on cost overruns. Thus, this research aimed to investigate the relationship between material waste and cost overrun in the Nigerian construction industry. A comprehensive review of the related literature revealed that all material waste causes are related to cost overrun causes at both pre-contract and post-contract stages of a project; but not vice versa. The mixed method (quantitative and qualitative) approach that is rooted in the positivist paradigm was adopted for this study. Abuja, the federal capital territory of Nigeria was the selected geographical scope of this research, out of which thirty-one (31) construction projects were purposeful selected (projects to the value of 100 million Rand/1.6 billion Naira and above).The research instrument was an interview guide used in conjunction with a tick box. Other sources of data included field investigation (measurement of onsite material waste) and the collection of archival records from bills of quantities, project records, and specifications. Analyses of the findings lead to the conclusion that a relationship exists between material waste and cost overrun; at the pre-contract and at the post-contract stages of a project. The implication is that an increase in material wastage on-site leads to a corresponding increase in the amount of cost overrun, regardless of the percentage allowance for material waste in the process of bill preparation. The study also concluded that the average percentage contribution of material waste to project-cost overruns is four (4) percent. Material-waste sources, causes, and control measures were found to have significant effects (very high, high, medium, low, and very low), in causing or minimising cost overruns at both pre-contract and post-contract stages of projects. The research has developed a conceptual model for the management of material waste and cost overruns in the construction industry based on the results and informed by the theoretical framework. The research has also developed a mathematical model for quantifying the amount of material waste to be generated by a project; as well as a mathematical equation for the effective management of material waste and cost overrun for projects. The study has achieved its aim of establishing an understanding of the issues leading to the relationship between material waste and cost overruns, as well as their management in the Nigerian construction industry. The study recommends that the management of material waste and cost overrun should be revised, based on the findings of this research and included as part of the procurement process. The mathematical models for quantification of onsite material waste, and the mathematical equation for managing material waste and cost overruns developed in the study, could be usefully adopted to improve management of material waste and cost overrun in the Nigerian construction industry.
- Full Text:
- Date Issued: 2016
Management of material waste and cost overrun in the Nigerian construction industry
- Authors: Saidu, Ibrahim
- Date: 2016
- Subjects: Construction industry -- Materials management -- Nigeria , Construction industry -- Nigeria -- Management
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/48937 , vital:41507
- Description: While wastage of materials has become a serious problem requiring urgent attention in the Nigerian Construction Industry, cost overrun is a problem, which affects 90 percent of the completed projects in the world; the argument on how to reduce/eliminate cost overrun has been on-going for the past 70 years; as the on-site wastage of materials leads to increases in the final project cost. Studies from different parts of the world have shown that construction-material waste represents a relatively large percentage of the production costs. Consequently, as a result of low levels of awareness, the Nigerian construction industry pays little attention to the effects of generated material waste on cost overruns. Thus, this research aimed to investigate the relationship between material waste and cost overrun in the Nigerian construction industry. A comprehensive review of the related literature revealed that all material waste causes are related to cost overrun causes at both pre-contract and post-contract stages of a project; but not vice versa. The mixed method (quantitative and qualitative) approach that is rooted in the positivist paradigm was adopted for this study. Abuja, the federal capital territory of Nigeria was the selected geographical scope of this research, out of which thirty-one (31) construction projects were purposeful selected (projects to the value of 100 million Rand/1.6 billion Naira and above).The research instrument was an interview guide used in conjunction with a tick box. Other sources of data included field investigation (measurement of onsite material waste) and the collection of archival records from bills of quantities, project records, and specifications. Analyses of the findings lead to the conclusion that a relationship exists between material waste and cost overrun; at the pre-contract and at the post-contract stages of a project. The implication is that an increase in material wastage on-site leads to a corresponding increase in the amount of cost overrun, regardless of the percentage allowance for material waste in the process of bill preparation. The study also concluded that the average percentage contribution of material waste to project-cost overruns is four (4) percent. Material-waste sources, causes, and control measures were found to have significant effects (very high, high, medium, low, and very low), in causing or minimising cost overruns at both pre-contract and post-contract stages of projects. The research has developed a conceptual model for the management of material waste and cost overruns in the construction industry based on the results and informed by the theoretical framework. The research has also developed a mathematical model for quantifying the amount of material waste to be generated by a project; as well as a mathematical equation for the effective management of material waste and cost overrun for projects. The study has achieved its aim of establishing an understanding of the issues leading to the relationship between material waste and cost overruns, as well as their management in the Nigerian construction industry. The study recommends that the management of material waste and cost overrun should be revised, based on the findings of this research and included as part of the procurement process. The mathematical models for quantification of onsite material waste, and the mathematical equation for managing material waste and cost overruns developed in the study, could be usefully adopted to improve management of material waste and cost overrun in the Nigerian construction industry.
- Full Text:
- Date Issued: 2016
- Authors: Saidu, Ibrahim
- Date: 2016
- Subjects: Construction industry -- Materials management -- Nigeria , Construction industry -- Nigeria -- Management
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/48937 , vital:41507
- Description: While wastage of materials has become a serious problem requiring urgent attention in the Nigerian Construction Industry, cost overrun is a problem, which affects 90 percent of the completed projects in the world; the argument on how to reduce/eliminate cost overrun has been on-going for the past 70 years; as the on-site wastage of materials leads to increases in the final project cost. Studies from different parts of the world have shown that construction-material waste represents a relatively large percentage of the production costs. Consequently, as a result of low levels of awareness, the Nigerian construction industry pays little attention to the effects of generated material waste on cost overruns. Thus, this research aimed to investigate the relationship between material waste and cost overrun in the Nigerian construction industry. A comprehensive review of the related literature revealed that all material waste causes are related to cost overrun causes at both pre-contract and post-contract stages of a project; but not vice versa. The mixed method (quantitative and qualitative) approach that is rooted in the positivist paradigm was adopted for this study. Abuja, the federal capital territory of Nigeria was the selected geographical scope of this research, out of which thirty-one (31) construction projects were purposeful selected (projects to the value of 100 million Rand/1.6 billion Naira and above).The research instrument was an interview guide used in conjunction with a tick box. Other sources of data included field investigation (measurement of onsite material waste) and the collection of archival records from bills of quantities, project records, and specifications. Analyses of the findings lead to the conclusion that a relationship exists between material waste and cost overrun; at the pre-contract and at the post-contract stages of a project. The implication is that an increase in material wastage on-site leads to a corresponding increase in the amount of cost overrun, regardless of the percentage allowance for material waste in the process of bill preparation. The study also concluded that the average percentage contribution of material waste to project-cost overruns is four (4) percent. Material-waste sources, causes, and control measures were found to have significant effects (very high, high, medium, low, and very low), in causing or minimising cost overruns at both pre-contract and post-contract stages of projects. The research has developed a conceptual model for the management of material waste and cost overruns in the construction industry based on the results and informed by the theoretical framework. The research has also developed a mathematical model for quantifying the amount of material waste to be generated by a project; as well as a mathematical equation for the effective management of material waste and cost overrun for projects. The study has achieved its aim of establishing an understanding of the issues leading to the relationship between material waste and cost overruns, as well as their management in the Nigerian construction industry. The study recommends that the management of material waste and cost overrun should be revised, based on the findings of this research and included as part of the procurement process. The mathematical models for quantification of onsite material waste, and the mathematical equation for managing material waste and cost overruns developed in the study, could be usefully adopted to improve management of material waste and cost overrun in the Nigerian construction industry.
- Full Text:
- Date Issued: 2016
Mental stress among civil engineering construction site agents and foremen in the Nelson Mandela Bay Metropole
- Authors: Haydam, Erich
- Date: 2016
- Subjects: Project management -- South Africa -- Nelson Mandela Bay Municipality , Civil engineers -- Job stress -- South Africa -- Nelson Mandela Bay Municipality , Construction industry -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/5545 , vital:20901
- Description: The civil engineering sector of the construction industry as a whole has been suffering from mental stress due to a lack of stress management interventions, rendering employees vulnerable to burnout, poor mental health, and subject to injury on site. The rationale of this study is to explore the prevalence of mental stress in the civil engineering sector of the construction industry, and the potential causes of stress, vis-à-vis the effects it has on an individual. An empirical study based on a descriptive and analytical survey method was conducted among medium to large civil engineering contractors in the Nelson Mandela Bay Metropole (NMBM). The study adopted the use of questionnaires, and a review of the related literature to effectively summarise and describe the collected field data. The sample stratum included civil engineering site agents and foremen. The salient findings include: high job demands, low job control, and low job social support are contributors to stress; site agents and foremen long for more time spent with family and friends; site agents and foremen are exposed to various physical, organisational and socio-economic stressors; site agents and foremen are displaying coping strategies unsupportive of a healthy lifestyle; there is a lack of awareness of stress management in the civil engineering sector of the construction industry; the level of stress experienced by site agents and foremen is rated as a lesser extent; the prevalence of depression among site agents and foremen is rated as a lesser extent; site agents and foremen are at risk of injury due to feeling stressed, and site agents and foremen are exposed to a range of musculoskeletal disorders (MSDs) due to poor ergonomics, and possibly stress too. It can be concluded that stress negatively affects the civil engineering sector of the construction industry by, inter alia, increased employee absence, injuries and accidents, higher staff turnover, depression, and lower levels of production. Furthermore, stress may lead to eventual burnout, rendering an individual at a significantly higher risk of developing physical health complications. Recommendations include: organisations to address the problem of work-family imbalance, by providing more time off to spend with family and loved ones. v Organisations need to promote and implement internal coping strategies, to assist those who are facing strain to effectively deal with their stress. More support from line managers to employees should be provided, as this will increase their resources in terms of job support, job demand, and job control in their working environment. Also, organisations need to promote teambuilding activities and exercise among their employees. Lastly, organisational policy and government legislation need to be revised in the long term, to provide for individual mental wellbeing, and reduced occupational stress.
- Full Text:
- Date Issued: 2016
- Authors: Haydam, Erich
- Date: 2016
- Subjects: Project management -- South Africa -- Nelson Mandela Bay Municipality , Civil engineers -- Job stress -- South Africa -- Nelson Mandela Bay Municipality , Construction industry -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/5545 , vital:20901
- Description: The civil engineering sector of the construction industry as a whole has been suffering from mental stress due to a lack of stress management interventions, rendering employees vulnerable to burnout, poor mental health, and subject to injury on site. The rationale of this study is to explore the prevalence of mental stress in the civil engineering sector of the construction industry, and the potential causes of stress, vis-à-vis the effects it has on an individual. An empirical study based on a descriptive and analytical survey method was conducted among medium to large civil engineering contractors in the Nelson Mandela Bay Metropole (NMBM). The study adopted the use of questionnaires, and a review of the related literature to effectively summarise and describe the collected field data. The sample stratum included civil engineering site agents and foremen. The salient findings include: high job demands, low job control, and low job social support are contributors to stress; site agents and foremen long for more time spent with family and friends; site agents and foremen are exposed to various physical, organisational and socio-economic stressors; site agents and foremen are displaying coping strategies unsupportive of a healthy lifestyle; there is a lack of awareness of stress management in the civil engineering sector of the construction industry; the level of stress experienced by site agents and foremen is rated as a lesser extent; the prevalence of depression among site agents and foremen is rated as a lesser extent; site agents and foremen are at risk of injury due to feeling stressed, and site agents and foremen are exposed to a range of musculoskeletal disorders (MSDs) due to poor ergonomics, and possibly stress too. It can be concluded that stress negatively affects the civil engineering sector of the construction industry by, inter alia, increased employee absence, injuries and accidents, higher staff turnover, depression, and lower levels of production. Furthermore, stress may lead to eventual burnout, rendering an individual at a significantly higher risk of developing physical health complications. Recommendations include: organisations to address the problem of work-family imbalance, by providing more time off to spend with family and loved ones. v Organisations need to promote and implement internal coping strategies, to assist those who are facing strain to effectively deal with their stress. More support from line managers to employees should be provided, as this will increase their resources in terms of job support, job demand, and job control in their working environment. Also, organisations need to promote teambuilding activities and exercise among their employees. Lastly, organisational policy and government legislation need to be revised in the long term, to provide for individual mental wellbeing, and reduced occupational stress.
- Full Text:
- Date Issued: 2016
Modular electric automatic guided vehicle suspension-drive unit
- Macfarlane, Alexander Blair Stuart, Van Niekerk, Theo
- Authors: Macfarlane, Alexander Blair Stuart , Van Niekerk, Theo
- Date: 2016
- Subjects: Autonomous vehicles , Sustainable design
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/8220 , vital:25968
- Description: This report discusses the design, development, elevation and creation of a modular omni-directional suspension-drive train unit for use on 1000 kg automatic guided vehicle. The system included a semi-active suspension oleo strut system that can vary its dampening and ride height. The drive train system is capable of omni-directional motion through the use of separately driven mechanum wheels power by a 48 volt DC system.
- Full Text:
- Date Issued: 2016
- Authors: Macfarlane, Alexander Blair Stuart , Van Niekerk, Theo
- Date: 2016
- Subjects: Autonomous vehicles , Sustainable design
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/8220 , vital:25968
- Description: This report discusses the design, development, elevation and creation of a modular omni-directional suspension-drive train unit for use on 1000 kg automatic guided vehicle. The system included a semi-active suspension oleo strut system that can vary its dampening and ride height. The drive train system is capable of omni-directional motion through the use of separately driven mechanum wheels power by a 48 volt DC system.
- Full Text:
- Date Issued: 2016
Optimisation of glass scoring operation
- Authors: Bechoo, Durvesh Sookraj
- Date: 2016
- Subjects: Glass -- Mechanical properties , Glass manufacture
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/9283 , vital:26559
- Description: The economic crisis and prior recession made a huge dent in many industries. Companies want a cheaper manufactured product with same quality to satisfy the customer in order be competitive yet profitable. Shatterprufe is a company that produces automotive glass. The company has a vast number of products and experience short production run lengths because of its order intake from customers. These short production run lengths require accurate setup to have a repeatable and stable process. An incorrect setup will produce a high scrap rate on production runs. Glass being very brittle and machining it incorrectly results in flaws, breakages or edge stresses that lead to latter process failures. The scoring operation of glass is key to achieve good edge quality to prevent such defects. The correct tools and machine parameters influence good edge quality during the setup procedure. Due to the process having many variables it is difficult to have a stable process and a repeatable stable process. This research will analyse the tool, parameters of the tool and machine parameters to achieve best edge quality and correlating these parameters that will lead to a repeatable stable process. An experimental analysis was conducted on 2.1mm and 2.5mm thick glass. These thicknesses are used predominantly at Shatterprufe automotive glass manufacturing company. The first sample and last sample was analysed during a production run. An average production run length is 36 pieces of glass. The edge quality was seen under a microscope and the fissure depth was measured. To achieve ideal edge quality, the fissure depth must be 15-20% deep of the glass thickness. A fissure is a crack propagated during the scoring of glass. A carbide wheel is used to score the glass. The carbide wheel parameters were varied being the wheel angle and wheel diameter. A 145 degree-4.1mm wheel, 145degree-5.6mm wheel and a 155 degree- 4.1mm wheel was used. The following relationships where observed being the wheel diameter and fissure depth. An increase in wheel diameter resulted in an increase in fissure depth but decreases the wheel life as the wheel becomes blunt. There was inconsistency on fissure depth with the larger diameter wheel. An increased in wheel angle from 145 degree to 155 degree promoted flaws in the glass. Larger wheel angles work better on glass thicknesses of 4-5mm as currently used in the Shatterprufe Struandale Company. An investigation on pressure variation in the pneumatic system was analysed using a pressure transmitter. The pressure transmitter measured the pressure per second versus the set pressure and recorded this data on a data logger. There was no pressure variation in the pneumatic system that can influence poor glass edge quality. A load cell analysis will investigate the physical applied pressure on the glass versus the set pressure. This analysis was to determine the relationship between set versus actual on the glass. It will indicate any mechanical fault. A mechanical fault could be a loose coupling or linkage that can influence the fissure depth. A direct proportional relationship was achieved between the set pressure versus the load cell readings. This indicates no mechanical fault on the system.
- Full Text:
- Date Issued: 2016
- Authors: Bechoo, Durvesh Sookraj
- Date: 2016
- Subjects: Glass -- Mechanical properties , Glass manufacture
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/9283 , vital:26559
- Description: The economic crisis and prior recession made a huge dent in many industries. Companies want a cheaper manufactured product with same quality to satisfy the customer in order be competitive yet profitable. Shatterprufe is a company that produces automotive glass. The company has a vast number of products and experience short production run lengths because of its order intake from customers. These short production run lengths require accurate setup to have a repeatable and stable process. An incorrect setup will produce a high scrap rate on production runs. Glass being very brittle and machining it incorrectly results in flaws, breakages or edge stresses that lead to latter process failures. The scoring operation of glass is key to achieve good edge quality to prevent such defects. The correct tools and machine parameters influence good edge quality during the setup procedure. Due to the process having many variables it is difficult to have a stable process and a repeatable stable process. This research will analyse the tool, parameters of the tool and machine parameters to achieve best edge quality and correlating these parameters that will lead to a repeatable stable process. An experimental analysis was conducted on 2.1mm and 2.5mm thick glass. These thicknesses are used predominantly at Shatterprufe automotive glass manufacturing company. The first sample and last sample was analysed during a production run. An average production run length is 36 pieces of glass. The edge quality was seen under a microscope and the fissure depth was measured. To achieve ideal edge quality, the fissure depth must be 15-20% deep of the glass thickness. A fissure is a crack propagated during the scoring of glass. A carbide wheel is used to score the glass. The carbide wheel parameters were varied being the wheel angle and wheel diameter. A 145 degree-4.1mm wheel, 145degree-5.6mm wheel and a 155 degree- 4.1mm wheel was used. The following relationships where observed being the wheel diameter and fissure depth. An increase in wheel diameter resulted in an increase in fissure depth but decreases the wheel life as the wheel becomes blunt. There was inconsistency on fissure depth with the larger diameter wheel. An increased in wheel angle from 145 degree to 155 degree promoted flaws in the glass. Larger wheel angles work better on glass thicknesses of 4-5mm as currently used in the Shatterprufe Struandale Company. An investigation on pressure variation in the pneumatic system was analysed using a pressure transmitter. The pressure transmitter measured the pressure per second versus the set pressure and recorded this data on a data logger. There was no pressure variation in the pneumatic system that can influence poor glass edge quality. A load cell analysis will investigate the physical applied pressure on the glass versus the set pressure. This analysis was to determine the relationship between set versus actual on the glass. It will indicate any mechanical fault. A mechanical fault could be a loose coupling or linkage that can influence the fissure depth. A direct proportional relationship was achieved between the set pressure versus the load cell readings. This indicates no mechanical fault on the system.
- Full Text:
- Date Issued: 2016
Physicians' perspectives on personal health records: a descriptive study
- Authors: Harmse, Magda Susanna
- Date: 2016
- Subjects: Medical records -- Data processing , Medical records -- Management , Information storage and retrieval systems -- Hospitals , Personal information management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/6876 , vital:21156
- Description: A Personal Health Record (PHR) is an electronic record of a patient’s health-related information that is managed by the patient. The patient can give access to other parties, such as healthcare providers and family members, as they see fit. These parties can use the information in emergency situations, in order to help improve the patient’s healthcare. PHRs have an important role to play in ensuring that a patient’s complete health history is available to his healthcare providers at the point of care. This is especially true in South Africa, where the majority of healthcare organizations still rely on paper-based methods of record-keeping. Research indicates that physicians play an important role in encouraging the adoption of PHRs amongst patients. Whilst various studies have focused on the perceptions of South African citizens towards PHRs, to date no research has focused on the perceptions of South African physicians. Considering the importance of physicians in encouraging the adoption of PHRs, the problem being addressed by this research project thus relates to the lack of information relating to the perceptions of South African physicians of PHRs. Physicians with private practices at private hospitals in Port Elizabeth, South Africa were surveyed in order to determine their perceptions towards PHRs. Results indicate perceptions regarding benefits to the physician and the patient, as well as concerns to the physician and the patient. The levels of trust in various potential PHR providers and the potential uses of a PHR for the physician were also explored. The results of the survey were compared with the results of relevant international literature in order to describe the perceptions of physicians towards PHRs.
- Full Text:
- Date Issued: 2016
- Authors: Harmse, Magda Susanna
- Date: 2016
- Subjects: Medical records -- Data processing , Medical records -- Management , Information storage and retrieval systems -- Hospitals , Personal information management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/6876 , vital:21156
- Description: A Personal Health Record (PHR) is an electronic record of a patient’s health-related information that is managed by the patient. The patient can give access to other parties, such as healthcare providers and family members, as they see fit. These parties can use the information in emergency situations, in order to help improve the patient’s healthcare. PHRs have an important role to play in ensuring that a patient’s complete health history is available to his healthcare providers at the point of care. This is especially true in South Africa, where the majority of healthcare organizations still rely on paper-based methods of record-keeping. Research indicates that physicians play an important role in encouraging the adoption of PHRs amongst patients. Whilst various studies have focused on the perceptions of South African citizens towards PHRs, to date no research has focused on the perceptions of South African physicians. Considering the importance of physicians in encouraging the adoption of PHRs, the problem being addressed by this research project thus relates to the lack of information relating to the perceptions of South African physicians of PHRs. Physicians with private practices at private hospitals in Port Elizabeth, South Africa were surveyed in order to determine their perceptions towards PHRs. Results indicate perceptions regarding benefits to the physician and the patient, as well as concerns to the physician and the patient. The levels of trust in various potential PHR providers and the potential uses of a PHR for the physician were also explored. The results of the survey were compared with the results of relevant international literature in order to describe the perceptions of physicians towards PHRs.
- Full Text:
- Date Issued: 2016
Property development: a lead-time management framework
- Authors: Stander, Ruan
- Date: 2016
- Subjects: Planned communities -- South Africa Land subdivision -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/12703 , vital:27110
- Description: Property development is a complex activity, with a series of stages involving many players with differing objectives, all operating within the building cycle context and its interaction with business and credit cycles. Before developers commit to acquiring land and sign a building contract, they first evaluate the market to establish a project’s viability, and secure finance and planning consents. (Cadman and Topping, 1995: 27). The residential property developer must have a fair knowledge of the changes in the economy and be able to interpret data collected. This knowledge is critical in order to make good business decisions and for future project planning. Understanding the economic variables and the impact these have on households, provides knowledge to the consumer to assist with financial planning and future investment options (Vogel, 2012: 14). Currently, everyone is aware of the huge negative impact of the global economic crisis, especially concerning international investment companies in western countries. Many businesses have ceased operations and some investment banks have experienced large scale bankruptcy due to the economic crisis and resulting recession. The Chinese economy suffered losses in the crisis as well (Yiping, 2011: 6). Even though the export industry experienced a huge negative impact in the economic crisis, the Chinese government announced that GDP growth remained at 8.7% in 2009. The highest contributor towards the Chinese GDP growth was the real estate industry (Yiping, 2011: 6). Presently in China, the real estate industry is a new economic growth point and the main industry in its Gross Domestic Product. Currently, the real estate market in China is facing unprecedented opportunities and challenges (Yiping, 2011: 6). From the above-mentioned statement by Yiping (2011: 6), it is evident that property development plays a major role in Gross Domestic Product (GDP) of global economies worldwide as well as in South Africa and that change in the supply and demand value of property impacts the performance of the property market. In times of property booms, the property market escalates and there is an under supply of property. This makes it a seller’s market, which stimulates the economy, as was the case during the period of 2004 to 2008. When the property bust hit in 2009, the world experienced an inevitable downturn in economic markets. This was known as the Global Financial Crisis (GFC) and was due to various factors such as: increased interest rates; increase of stricter mortgage bond approvals; recession and other possible financial regulatory factors. A downturn in property prices became evident and property development was negatively impacted (Reed, Sims and Cadman, 2015). This impact on the property sector caused a relative over supply of property, making it a limited buyer’s market and forced real estate agents, property developers and owners to decrease the price of property thus negatively affecting the GDP of the economy. This research was conducted by means of a review of the related literature as well as an empirical study. The empirical study was conducted with the use of a quantitative statistical approach. In this study, research questionnaires as a data collection tool were distributed to members of the sample population. The primary objective of the study was to develop a framework for the successful delivery of residential developments in South Africa, especially in the context of time. A descriptive survey was conducted among professional property development practitioners, real estate agencies, conveyancers and project managers in South Africa.
- Full Text:
- Date Issued: 2016
- Authors: Stander, Ruan
- Date: 2016
- Subjects: Planned communities -- South Africa Land subdivision -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/12703 , vital:27110
- Description: Property development is a complex activity, with a series of stages involving many players with differing objectives, all operating within the building cycle context and its interaction with business and credit cycles. Before developers commit to acquiring land and sign a building contract, they first evaluate the market to establish a project’s viability, and secure finance and planning consents. (Cadman and Topping, 1995: 27). The residential property developer must have a fair knowledge of the changes in the economy and be able to interpret data collected. This knowledge is critical in order to make good business decisions and for future project planning. Understanding the economic variables and the impact these have on households, provides knowledge to the consumer to assist with financial planning and future investment options (Vogel, 2012: 14). Currently, everyone is aware of the huge negative impact of the global economic crisis, especially concerning international investment companies in western countries. Many businesses have ceased operations and some investment banks have experienced large scale bankruptcy due to the economic crisis and resulting recession. The Chinese economy suffered losses in the crisis as well (Yiping, 2011: 6). Even though the export industry experienced a huge negative impact in the economic crisis, the Chinese government announced that GDP growth remained at 8.7% in 2009. The highest contributor towards the Chinese GDP growth was the real estate industry (Yiping, 2011: 6). Presently in China, the real estate industry is a new economic growth point and the main industry in its Gross Domestic Product. Currently, the real estate market in China is facing unprecedented opportunities and challenges (Yiping, 2011: 6). From the above-mentioned statement by Yiping (2011: 6), it is evident that property development plays a major role in Gross Domestic Product (GDP) of global economies worldwide as well as in South Africa and that change in the supply and demand value of property impacts the performance of the property market. In times of property booms, the property market escalates and there is an under supply of property. This makes it a seller’s market, which stimulates the economy, as was the case during the period of 2004 to 2008. When the property bust hit in 2009, the world experienced an inevitable downturn in economic markets. This was known as the Global Financial Crisis (GFC) and was due to various factors such as: increased interest rates; increase of stricter mortgage bond approvals; recession and other possible financial regulatory factors. A downturn in property prices became evident and property development was negatively impacted (Reed, Sims and Cadman, 2015). This impact on the property sector caused a relative over supply of property, making it a limited buyer’s market and forced real estate agents, property developers and owners to decrease the price of property thus negatively affecting the GDP of the economy. This research was conducted by means of a review of the related literature as well as an empirical study. The empirical study was conducted with the use of a quantitative statistical approach. In this study, research questionnaires as a data collection tool were distributed to members of the sample population. The primary objective of the study was to develop a framework for the successful delivery of residential developments in South Africa, especially in the context of time. A descriptive survey was conducted among professional property development practitioners, real estate agencies, conveyancers and project managers in South Africa.
- Full Text:
- Date Issued: 2016
Protection of personal information in the South African cloud computing environment: a framework for cloud computing adoption
- Authors: Skolmen, Dayne Edward
- Date: 2016
- Subjects: Cloud computing -- Security measures Data protection -- Law and legislation -- South Africa , Privacy, Right of
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/12747 , vital:27117
- Description: Cloud Computing has advanced to the point where it may be considered an attractive proposition for an increasing number of South African organisations, yet the adoption of Cloud Computing in South Africa remains relatively low. Many organisations have been hesitant to adopt Cloud solutions owing to a variety of inhibiting factors and concerns that have created mistrust in Cloud Computing. One of the top concerns identified is security within the Cloud Computing environment. The approaching commencement of new data protection legislation in South Africa, known as the Protection of Personal Information Act (POPI), may provide an ideal opportunity to address the information security-related inhibiting factors and foster a trust relationship between potential Cloud users and Cloud providers. POPI applies to anyone who processes personal information and regulates how they must handle, store and secure that information. POPI is considered to be beneficial to Cloud providers as it gives them the opportunity to build trust with potential Cloud users through achieving compliance and providing assurance. The aim of this dissertation is, therefore, to develop a framework for Cloud Computing adoption that will assist in mitigating the information security-related factors inhibiting Cloud adoption by fostering a trust relationship through compliance with the POPI Act. It is believed that such a framework would be useful to South African Cloud providers and could ultimately assist in the promotion of Cloud adoption in South Africa.
- Full Text:
- Date Issued: 2016
- Authors: Skolmen, Dayne Edward
- Date: 2016
- Subjects: Cloud computing -- Security measures Data protection -- Law and legislation -- South Africa , Privacy, Right of
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/12747 , vital:27117
- Description: Cloud Computing has advanced to the point where it may be considered an attractive proposition for an increasing number of South African organisations, yet the adoption of Cloud Computing in South Africa remains relatively low. Many organisations have been hesitant to adopt Cloud solutions owing to a variety of inhibiting factors and concerns that have created mistrust in Cloud Computing. One of the top concerns identified is security within the Cloud Computing environment. The approaching commencement of new data protection legislation in South Africa, known as the Protection of Personal Information Act (POPI), may provide an ideal opportunity to address the information security-related inhibiting factors and foster a trust relationship between potential Cloud users and Cloud providers. POPI applies to anyone who processes personal information and regulates how they must handle, store and secure that information. POPI is considered to be beneficial to Cloud providers as it gives them the opportunity to build trust with potential Cloud users through achieving compliance and providing assurance. The aim of this dissertation is, therefore, to develop a framework for Cloud Computing adoption that will assist in mitigating the information security-related factors inhibiting Cloud adoption by fostering a trust relationship through compliance with the POPI Act. It is believed that such a framework would be useful to South African Cloud providers and could ultimately assist in the promotion of Cloud adoption in South Africa.
- Full Text:
- Date Issued: 2016
Resolving the service delivery backlog at the Eastern Cape Department of Human Settlements
- Authors: Hlamandana, Zukiswa
- Date: 2016
- Subjects: Project management -- South Africa -- Eastern Cape , Public administration -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/5303 , vital:20831
- Description: The purpose of this study is resolving the service delivery backlog at the Eastern Cape Department of Human Settlements. The problem of service delivery backlogs is not one unique to South Africa but a problem faced by many developing nations. South African government in all spheres still faces a challenge of creating the good life for its citizen, even more on local Municipality as they are government closest to the people and interacts more closely with communities. It is two decades since South Africa became a democratic state and despite promises and efforts to improve service delivery to the public there still exist backlog in service delivery. In order to address the research problem and to fulfil the research objectives, an in-depth literature study was done on the current state and the role of the Department of Human settlements as well as the current backlog facing the department. Housing process and procedures, challenges, policies, finance, factors influencing housing allocation and delivery were also reviewed. Empirical studies were also performed by means of questionnaires with the community and officials in the Eastern Cape Department of Human Settlements. The literature and empirical study made it possible to identify causes, challenges and impact of service delivery backlog and to recommend possible solutions for resolving service delivery backlogs. These recommendations should be of value to the department and the country as a whole. In this study research methodology was focused on the research design, target population of study, sampling design and procedures, data collection instrument, data collection procedures, data presentation, analysis and interpretation. The major findings were identified in the study such as poor workmanship, delays in procurement processes, illegal acts, vandalism, poor planning, finance, project management and quality assurance. The study also offers recommendations such as revising procurement policy, source more funds from National, employ more qualified staff, involve community and all stakeholders in decision making in order to address the service delivery backlog successfully .All kinds of approaches that the government needs to employ in order to also improve its performance of delivering service to the public in South Africa were determined.
- Full Text:
- Date Issued: 2016
- Authors: Hlamandana, Zukiswa
- Date: 2016
- Subjects: Project management -- South Africa -- Eastern Cape , Public administration -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/5303 , vital:20831
- Description: The purpose of this study is resolving the service delivery backlog at the Eastern Cape Department of Human Settlements. The problem of service delivery backlogs is not one unique to South Africa but a problem faced by many developing nations. South African government in all spheres still faces a challenge of creating the good life for its citizen, even more on local Municipality as they are government closest to the people and interacts more closely with communities. It is two decades since South Africa became a democratic state and despite promises and efforts to improve service delivery to the public there still exist backlog in service delivery. In order to address the research problem and to fulfil the research objectives, an in-depth literature study was done on the current state and the role of the Department of Human settlements as well as the current backlog facing the department. Housing process and procedures, challenges, policies, finance, factors influencing housing allocation and delivery were also reviewed. Empirical studies were also performed by means of questionnaires with the community and officials in the Eastern Cape Department of Human Settlements. The literature and empirical study made it possible to identify causes, challenges and impact of service delivery backlog and to recommend possible solutions for resolving service delivery backlogs. These recommendations should be of value to the department and the country as a whole. In this study research methodology was focused on the research design, target population of study, sampling design and procedures, data collection instrument, data collection procedures, data presentation, analysis and interpretation. The major findings were identified in the study such as poor workmanship, delays in procurement processes, illegal acts, vandalism, poor planning, finance, project management and quality assurance. The study also offers recommendations such as revising procurement policy, source more funds from National, employ more qualified staff, involve community and all stakeholders in decision making in order to address the service delivery backlog successfully .All kinds of approaches that the government needs to employ in order to also improve its performance of delivering service to the public in South Africa were determined.
- Full Text:
- Date Issued: 2016
Risk analysis and management systems in South African construction project management practices
- Authors: Cook, Iain Murray
- Date: 2016
- Subjects: Construction projects -- Management , Construction industry -- Risk management , Project management -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/3469 , vital:20433
- Description: Risk management (RM) should be seen as one of the most important functions in the South African built environment. Without the effective management of the risks associated with the industry, the noble vision of a sector that is efficient, profitable, and sustainable cannot be achieved. By embracing tried and tested policies that successfully mitigate risk, industry stakeholders will achieve many project successes, and will outlast any competitors that choose to ignore, or are ignorant of the fact, that the negative impact risk has on projects is inversely proportional to the level of RM employed. Construction Project Management (CPM) practices, realising that there are excellent business opportunities across South Africa’s borders, and faced with a competitive South African market, are engaging with developers and government entities involved in cross border projects in the hope of securing these potentially lucrative African projects. With this move into Africa comes increased uncertainty and risk for these CPM practices, and other project stakeholders. Similarly, CPM practices that have made the strategic decision to remain operational only within South Africa’s borders, are faced with a competitive and complex built environment and industry, made increasingly challenging by a weakening economy, exacerbated by industrial strikes, infrastructure deficiencies and a decrease in industry skill levels. This study reports on Project Managers’ (PMs’) perceptions of project failures and inefficiencies resulting from inadequate RM on projects, including the RM methodologies currently being employed. The study focused on perceptions of PMs who operate within South Africa’s borders, PMs that operate across border into other African countries, as well as PMs who operate exclusively within South Africa’s built environment framework. A study was undertaken incorporating qualitative methodologies via a normative survey. The survey was split into three main phases. Phase one employed the use of a pilot survey executed with the objective of further investigating the main sub-problems to gain more insight into the related issues and challenges. For the pilot survey, PMs were selected based on their engagement in CPM activities within South Africa as well as across South Africa’s borders into other African countries. Phase two of the main survey, with the sample stratum being the Association of Construction Project Managers (ACPM), was aimed at PMs within the ACPM who have engaged, or are engaging, in CPM activities both within South Africa’s borders as well as across South Africa’s borders into other African countries. Phase 3 of the main survey, with the sample stratum being the ACPM, was aimed at PMs within the ACPM who have engaged, or are engaging, in CPM activities within South Africa’s borders only and have not engaged in cross border activities. Survey findings identified the commercial sector and value of the projects undertaken by the practices, the level of risk associated with different client typologies, the link between inadequate RM and project inefficiency and failure, and the importance of RM on projects. Findings also identified that RM methodologies are employed by CPM practices, and that CPM practices generally endeavour to create a culture of risk awareness amongst employees. Further findings indicated that CPM practices may not always understand the risks associated with new industry sectors, regions or countries that they are considering operating within, and that that there is room for improvement regarding the effectiveness of current RM systems. Survey findings also indicated that risk is not always transferred to the correct project stakeholder most suited to managing the risk, and CPM practices are not always able to accurately quantify the costs associated with project risk. Furthermore, it was identified that CPM practices do not always undertaken risk assessments (RAs) at the correct project stage resulting in inadequate risk contingencies allowances, regular risk reviews are not always undertaken for projects, project pre-mortems are seen as valuable tools by CPM practices as a method to reduce future risk, and project post-mortems relative to ‘lessons learnt’ are not always undertaken. Conclusions outline the link between effective RM, project inefficiencies and project failure, as well as the increase or decrease in risk relative to ineffective or effective use of risk identification and management methodologies for time, cost, and quality factors respectively. Conclusions also outline the fact that although CPM practices generally understand the link between RM and project success, they are not always able to fully comprehend the risks associated with new industry sectors, regions or cross border countries. This indicates that without the adequate identification of risk, the RM process or steps that follow the qualitative risk identification process will have little or no value. This is indicative of the requirement for professional associations to consolidate risk data for industry activities with the aim of improving the level of RM industry wide. Recommendations highlight the importance of the compiling of sector specific risk registers, compiled by the South African Council for the Project and Construction Management Professions (SACPCMP) with registered member input, made available to all PMs via the SACPCMPs online database. Further recommendations include: the engendering, by senior management of CPM practices; a healthy ‘risk aware’ culture, by promoting RM practices aligned with best practice methodologies; the implementation of well balanced and formal RM systems throughout the CPM practice, with the aim of achieving effective RM without overburdening PMs with unnecessary documentation or ‘paperwork’; the attendance of risk conferences and workshops by all CPM practices, aimed at specifically identifying challenges that exist with RM and methods that can be employed to improve the status quo; the attendance of formal risk training courses, by all CPM practices, aimed at improving the knowledge base of PMs relative to effective RM, and the appointment of risk professionals, driven by the monetary value and risk levels of the project, to undertake the RM process and unburden PMs from the task, allowing PMs to concentrate on the other project knowledge areas.
- Full Text:
- Date Issued: 2016
- Authors: Cook, Iain Murray
- Date: 2016
- Subjects: Construction projects -- Management , Construction industry -- Risk management , Project management -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/3469 , vital:20433
- Description: Risk management (RM) should be seen as one of the most important functions in the South African built environment. Without the effective management of the risks associated with the industry, the noble vision of a sector that is efficient, profitable, and sustainable cannot be achieved. By embracing tried and tested policies that successfully mitigate risk, industry stakeholders will achieve many project successes, and will outlast any competitors that choose to ignore, or are ignorant of the fact, that the negative impact risk has on projects is inversely proportional to the level of RM employed. Construction Project Management (CPM) practices, realising that there are excellent business opportunities across South Africa’s borders, and faced with a competitive South African market, are engaging with developers and government entities involved in cross border projects in the hope of securing these potentially lucrative African projects. With this move into Africa comes increased uncertainty and risk for these CPM practices, and other project stakeholders. Similarly, CPM practices that have made the strategic decision to remain operational only within South Africa’s borders, are faced with a competitive and complex built environment and industry, made increasingly challenging by a weakening economy, exacerbated by industrial strikes, infrastructure deficiencies and a decrease in industry skill levels. This study reports on Project Managers’ (PMs’) perceptions of project failures and inefficiencies resulting from inadequate RM on projects, including the RM methodologies currently being employed. The study focused on perceptions of PMs who operate within South Africa’s borders, PMs that operate across border into other African countries, as well as PMs who operate exclusively within South Africa’s built environment framework. A study was undertaken incorporating qualitative methodologies via a normative survey. The survey was split into three main phases. Phase one employed the use of a pilot survey executed with the objective of further investigating the main sub-problems to gain more insight into the related issues and challenges. For the pilot survey, PMs were selected based on their engagement in CPM activities within South Africa as well as across South Africa’s borders into other African countries. Phase two of the main survey, with the sample stratum being the Association of Construction Project Managers (ACPM), was aimed at PMs within the ACPM who have engaged, or are engaging, in CPM activities both within South Africa’s borders as well as across South Africa’s borders into other African countries. Phase 3 of the main survey, with the sample stratum being the ACPM, was aimed at PMs within the ACPM who have engaged, or are engaging, in CPM activities within South Africa’s borders only and have not engaged in cross border activities. Survey findings identified the commercial sector and value of the projects undertaken by the practices, the level of risk associated with different client typologies, the link between inadequate RM and project inefficiency and failure, and the importance of RM on projects. Findings also identified that RM methodologies are employed by CPM practices, and that CPM practices generally endeavour to create a culture of risk awareness amongst employees. Further findings indicated that CPM practices may not always understand the risks associated with new industry sectors, regions or countries that they are considering operating within, and that that there is room for improvement regarding the effectiveness of current RM systems. Survey findings also indicated that risk is not always transferred to the correct project stakeholder most suited to managing the risk, and CPM practices are not always able to accurately quantify the costs associated with project risk. Furthermore, it was identified that CPM practices do not always undertaken risk assessments (RAs) at the correct project stage resulting in inadequate risk contingencies allowances, regular risk reviews are not always undertaken for projects, project pre-mortems are seen as valuable tools by CPM practices as a method to reduce future risk, and project post-mortems relative to ‘lessons learnt’ are not always undertaken. Conclusions outline the link between effective RM, project inefficiencies and project failure, as well as the increase or decrease in risk relative to ineffective or effective use of risk identification and management methodologies for time, cost, and quality factors respectively. Conclusions also outline the fact that although CPM practices generally understand the link between RM and project success, they are not always able to fully comprehend the risks associated with new industry sectors, regions or cross border countries. This indicates that without the adequate identification of risk, the RM process or steps that follow the qualitative risk identification process will have little or no value. This is indicative of the requirement for professional associations to consolidate risk data for industry activities with the aim of improving the level of RM industry wide. Recommendations highlight the importance of the compiling of sector specific risk registers, compiled by the South African Council for the Project and Construction Management Professions (SACPCMP) with registered member input, made available to all PMs via the SACPCMPs online database. Further recommendations include: the engendering, by senior management of CPM practices; a healthy ‘risk aware’ culture, by promoting RM practices aligned with best practice methodologies; the implementation of well balanced and formal RM systems throughout the CPM practice, with the aim of achieving effective RM without overburdening PMs with unnecessary documentation or ‘paperwork’; the attendance of risk conferences and workshops by all CPM practices, aimed at specifically identifying challenges that exist with RM and methods that can be employed to improve the status quo; the attendance of formal risk training courses, by all CPM practices, aimed at improving the knowledge base of PMs relative to effective RM, and the appointment of risk professionals, driven by the monetary value and risk levels of the project, to undertake the RM process and unburden PMs from the task, allowing PMs to concentrate on the other project knowledge areas.
- Full Text:
- Date Issued: 2016
Risk management practices on public sector construction projects: Case studies in Lesotho
- Authors: Nketekete, Molefi
- Date: 2016
- Subjects: Construction industry -- Risk management Construction industry -- Lesotho Risk management -- Lesotho
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/11228 , vital:26900
- Description: Risk management (RM) is a knowledge area in project management (PM). The challenges of project complexity require astute RM. However, RM practices in Lesotho appear to lag behind international trends. Within the sub-Sahara African region, RM incompetence affects timely delivery of public projects owing to PM practices that do not address risks. This study, which adopts a case study approach, unravels the „how and why‟ of contemporary RM practices which are lacking in Lesotho, despite a poor record of project success in the construction industry. Through the reviewed literature and primary data collection, this study investigates three elements in order to determine the level of RM practice within Lesotho public sector construction projects. These elements were the basis of RM, the RM processes, and the peoples‟ perceptions which were essentially centred on the probability of risk and the impact thereof. The results from the study achieved through cross-case synthesis show that the level of RM practice in the Lesotho public sector construction projects is at variance with international practice. The notable gaps in practice include construction professionals who do not know about or who have not practiced project RM. The study thus propose that the Government of Lesotho (GoL) should invest in educating more people in the areas of construction project management or engage professionals with extensive project RM experience. The recommended initiatives should promote professionalism and accountability that are essential for bracing the RM practice in public sector construction projects.
- Full Text:
- Date Issued: 2016
- Authors: Nketekete, Molefi
- Date: 2016
- Subjects: Construction industry -- Risk management Construction industry -- Lesotho Risk management -- Lesotho
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/11228 , vital:26900
- Description: Risk management (RM) is a knowledge area in project management (PM). The challenges of project complexity require astute RM. However, RM practices in Lesotho appear to lag behind international trends. Within the sub-Sahara African region, RM incompetence affects timely delivery of public projects owing to PM practices that do not address risks. This study, which adopts a case study approach, unravels the „how and why‟ of contemporary RM practices which are lacking in Lesotho, despite a poor record of project success in the construction industry. Through the reviewed literature and primary data collection, this study investigates three elements in order to determine the level of RM practice within Lesotho public sector construction projects. These elements were the basis of RM, the RM processes, and the peoples‟ perceptions which were essentially centred on the probability of risk and the impact thereof. The results from the study achieved through cross-case synthesis show that the level of RM practice in the Lesotho public sector construction projects is at variance with international practice. The notable gaps in practice include construction professionals who do not know about or who have not practiced project RM. The study thus propose that the Government of Lesotho (GoL) should invest in educating more people in the areas of construction project management or engage professionals with extensive project RM experience. The recommended initiatives should promote professionalism and accountability that are essential for bracing the RM practice in public sector construction projects.
- Full Text:
- Date Issued: 2016
The adequacy of traffic control measures during road works
- Authors: Norris, Shaun Peter
- Date: 2016
- Subjects: Roads -- Safety measures Roads -- Maintenance and repair Construction industry -- Employees -- Health and hygiene
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/11520 , vital:26934
- Description: Workers have the right to a safe working environment. This right is encapsulated in the Bill of Rights (1996) wherein strong emphasis is placed on the right to a healthy and safe work environment. The construction industry has been labeled as dangerous owing to regular incidents, serious accidents, and fatalities. Road workers’ safety is at high risk in road construction areas, as they perform their work activities alongside moving vehicles that are often large and sometimes moving at high speed. It was determined that very few secondary sources provided information regarding the safety of South African road construction workers. Therefore, the knowledge obtained from this study contributes to the body of knowledge on the subject matter. To collect data, three descriptive surveys were conducted on two different road construction projects within the Eastern Cape. The survey participants included engineering consultants, contractors, traffic safety officers, general road construction workers, as well as random motorists driving through the work zone. Further data was collected from a speed measuring instrument placed in the work zone of the Port Elizabeth. The findings of this research report indicate that road users are not cognizant of the risk to workers in the work zone and that signage and advance warning signs alone are not sufficient to slow motorists’ speed. A further significant threat to road worker safety, is plant operator visibility. This study recommends that government and construction firms educate the public regarding the risks associated with speeding through a work zone. Construction firms should use electronic speed measuring devices prior to the work zone to make road users aware of their speed in relation to the speed limit. To limit plant related accidents, companies should install sensors or cameras on the rear and side panels of plant, so that plant operators have all round vision. Furthermore, road workers could be educated on the controlled use of their mobile phones to reduce the risks associated with the use of mobile phones inside work zones.
- Full Text:
- Date Issued: 2016
- Authors: Norris, Shaun Peter
- Date: 2016
- Subjects: Roads -- Safety measures Roads -- Maintenance and repair Construction industry -- Employees -- Health and hygiene
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/11520 , vital:26934
- Description: Workers have the right to a safe working environment. This right is encapsulated in the Bill of Rights (1996) wherein strong emphasis is placed on the right to a healthy and safe work environment. The construction industry has been labeled as dangerous owing to regular incidents, serious accidents, and fatalities. Road workers’ safety is at high risk in road construction areas, as they perform their work activities alongside moving vehicles that are often large and sometimes moving at high speed. It was determined that very few secondary sources provided information regarding the safety of South African road construction workers. Therefore, the knowledge obtained from this study contributes to the body of knowledge on the subject matter. To collect data, three descriptive surveys were conducted on two different road construction projects within the Eastern Cape. The survey participants included engineering consultants, contractors, traffic safety officers, general road construction workers, as well as random motorists driving through the work zone. Further data was collected from a speed measuring instrument placed in the work zone of the Port Elizabeth. The findings of this research report indicate that road users are not cognizant of the risk to workers in the work zone and that signage and advance warning signs alone are not sufficient to slow motorists’ speed. A further significant threat to road worker safety, is plant operator visibility. This study recommends that government and construction firms educate the public regarding the risks associated with speeding through a work zone. Construction firms should use electronic speed measuring devices prior to the work zone to make road users aware of their speed in relation to the speed limit. To limit plant related accidents, companies should install sensors or cameras on the rear and side panels of plant, so that plant operators have all round vision. Furthermore, road workers could be educated on the controlled use of their mobile phones to reduce the risks associated with the use of mobile phones inside work zones.
- Full Text:
- Date Issued: 2016
The design, management and testing of a solar vehicle's energy strategy
- Authors: Jordaan, Johan
- Date: 2016
- Subjects: Solar energy -- Hybrid systems , Renewable energy sources
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/7428 , vital:21362
- Description: In recent years the interest in implementing solar energy on vehicles (electrical and hybrid) has grown significantly [1]. There are currently limitations in this sector, such as the low energy density (efficiency of conversion) of this source, but it is still a renewable resource and as such, there is a growing interest [1]. A “smart” energy strategy implemented on a solar/electrical vehicle, in order to increase its energy harvesting volume, could enhance the growth of this sector. A tracking algorithm for a solar vehicle’s MPPT (Maximum Power Point Tracker) can be designed to source solar energy very effectively and to increase the speed of finding (tracking) this optimal sourcing point (solar panel voltage and current). Even though there are many different MPPT algorithms, it was decided that most of them were designed for stationary MPPT applications and the dynamics of implementing a MPPT on a vehicle create some unique scenarios. These include: Shadow flicker. This is rhythmic, rapid moving shadows across a solar panel, such as shadows from a line of trees: Rapid changes in solar panel orientation due to the road surface/relief; Rapid changes in panel temperature due to the location of the vehicle. The aim of the research can be divided into three outcomes: 1 Creating a “Smart” energy strategy/control, 2 Implement the new control system on a solar vehicle’s MPPT, and 3 Harvesting maximum energy from solar panels using the new energy strategy. The term “smart” is used to indicate the ability of the MPPT algorithm to be updated and improved based on previous results. A MPPT and scaled solar vehicle is designed and manufactured in order to test the MPPT algorithm. The purpose of using a self-developed experimental setup is to have more control over the system variables as well as having the maximum freedom in setting up the system parameters.
- Full Text:
- Date Issued: 2016
- Authors: Jordaan, Johan
- Date: 2016
- Subjects: Solar energy -- Hybrid systems , Renewable energy sources
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/7428 , vital:21362
- Description: In recent years the interest in implementing solar energy on vehicles (electrical and hybrid) has grown significantly [1]. There are currently limitations in this sector, such as the low energy density (efficiency of conversion) of this source, but it is still a renewable resource and as such, there is a growing interest [1]. A “smart” energy strategy implemented on a solar/electrical vehicle, in order to increase its energy harvesting volume, could enhance the growth of this sector. A tracking algorithm for a solar vehicle’s MPPT (Maximum Power Point Tracker) can be designed to source solar energy very effectively and to increase the speed of finding (tracking) this optimal sourcing point (solar panel voltage and current). Even though there are many different MPPT algorithms, it was decided that most of them were designed for stationary MPPT applications and the dynamics of implementing a MPPT on a vehicle create some unique scenarios. These include: Shadow flicker. This is rhythmic, rapid moving shadows across a solar panel, such as shadows from a line of trees: Rapid changes in solar panel orientation due to the road surface/relief; Rapid changes in panel temperature due to the location of the vehicle. The aim of the research can be divided into three outcomes: 1 Creating a “Smart” energy strategy/control, 2 Implement the new control system on a solar vehicle’s MPPT, and 3 Harvesting maximum energy from solar panels using the new energy strategy. The term “smart” is used to indicate the ability of the MPPT algorithm to be updated and improved based on previous results. A MPPT and scaled solar vehicle is designed and manufactured in order to test the MPPT algorithm. The purpose of using a self-developed experimental setup is to have more control over the system variables as well as having the maximum freedom in setting up the system parameters.
- Full Text:
- Date Issued: 2016
The effects of poor programme management coordination on the delivery of health infrastructure projects: a case of the Northern Cape
- Authors: Mabona, Lesetja Godley
- Date: 2016
- Subjects: Health facilities -- South Africa -- Northern Cape , Hospital buildings -- Maintenance and repair
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/8165 , vital:25341
- Description: The Northern Cape Department of Health (NCDoH) experiences sub-optimal programme management coordination in the delivery of health facilities. This research study aimed to determine how programme management coordination amongst the provincial office of the NCDoH, district office and the hospital that did undergo revitalisation through the Hospital Revitalisation Programme (HRP) could be improved. In order to explore the research problem the concepts of construction management and operations management were studied from which factors that impact positively and negatively on programme management coordination were extracted. A rationalist philosophical approach and subjectivist epistemology were utilised. The empirical enquiry was conducted through the case study method to obtain in-depth context of the case. The empirical evidence was obtained through a research interview guide utilising the purposive sampling strategy. The research initiated the sampling procedure by targeting the most relevant managers to the research study in the three units of analysis. A snowball approach evolved for the identification of other managers deemed relevant for purposes of this research. The thesis obtained opinions on the subject matter from managers who participated or were supposed to participate in the implementation of the delivery objectives of the administrative programmes in the NCDoH together with the objectives of the HRP. The research revealed that poor programme management coordination in the NCDoH as a result of internal competition and silo functions which prevent synergy from programme management plan development up to implementation. Furthermore, the complete building infrastructure only attains the objectives of construction management but the building infrastructure are not a complete justification for benefit realisation without the integration of operations management. The NCDoH cannot declare a successful programme management practices if it fails to realise the benefits that require integration of infrastructure and services. It is recommended that in order to attain effective programme management and realise the benefits of strategic objectives there should be a cross-functional approach from executive management which should trickle-down to the lowest level of administration. This research has developed a framework that can be useful in the integration of construction and operations management whereby infrastructure and operational services have to be delivered simultaneously in the field of programme management.
- Full Text:
- Date Issued: 2016
- Authors: Mabona, Lesetja Godley
- Date: 2016
- Subjects: Health facilities -- South Africa -- Northern Cape , Hospital buildings -- Maintenance and repair
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/8165 , vital:25341
- Description: The Northern Cape Department of Health (NCDoH) experiences sub-optimal programme management coordination in the delivery of health facilities. This research study aimed to determine how programme management coordination amongst the provincial office of the NCDoH, district office and the hospital that did undergo revitalisation through the Hospital Revitalisation Programme (HRP) could be improved. In order to explore the research problem the concepts of construction management and operations management were studied from which factors that impact positively and negatively on programme management coordination were extracted. A rationalist philosophical approach and subjectivist epistemology were utilised. The empirical enquiry was conducted through the case study method to obtain in-depth context of the case. The empirical evidence was obtained through a research interview guide utilising the purposive sampling strategy. The research initiated the sampling procedure by targeting the most relevant managers to the research study in the three units of analysis. A snowball approach evolved for the identification of other managers deemed relevant for purposes of this research. The thesis obtained opinions on the subject matter from managers who participated or were supposed to participate in the implementation of the delivery objectives of the administrative programmes in the NCDoH together with the objectives of the HRP. The research revealed that poor programme management coordination in the NCDoH as a result of internal competition and silo functions which prevent synergy from programme management plan development up to implementation. Furthermore, the complete building infrastructure only attains the objectives of construction management but the building infrastructure are not a complete justification for benefit realisation without the integration of operations management. The NCDoH cannot declare a successful programme management practices if it fails to realise the benefits that require integration of infrastructure and services. It is recommended that in order to attain effective programme management and realise the benefits of strategic objectives there should be a cross-functional approach from executive management which should trickle-down to the lowest level of administration. This research has developed a framework that can be useful in the integration of construction and operations management whereby infrastructure and operational services have to be delivered simultaneously in the field of programme management.
- Full Text:
- Date Issued: 2016
The implications of the 2014 construction regulations for the Department of Public Works procurement system
- Authors: Matete, Kenevoe Rose
- Date: 2016
- Subjects: Construction industry -- Safety regulations -- South Africa Construction industry -- Standards -- South Africa Industrial procurement -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/10309 , vital:26651
- Description: The Organisation of Economic Co-operation and Development (OECD) notes that regulations seek to make improvements by changing individual or organisational behaviour in ways that generate positive impacts in terms of solving societal and economic problems. At its most basic level, regulations are designed to work according to implementation, leading to changes in behaviours that, in turn, lead to changes in outcomes. Such outcomes can be satisfaction in terms of an underlying problem or other (hopefully positive) changes in conditions in the world. Following this premise, this research project investigates the implications of the 2014 Construction Regulations for the Department of Public Works’ procurement system. The study also examines the contents of the construction Regulations; the impact of the Construction Regulations 2014 – permit-to-work; client / contractor procurement issues; the enforcement of compliance to permit-to-work requirements, and education and training demands in relation to health and safety (H&S) competency. The study shows that even though industry role players are relatively familiar with the Construction Regulations 2014, there is a common concern regarding competency (education and training) levels required for the implementation of the permit-to-work requirement of the regulations. The concerns focus on the ability of the Department of Labour (DoL) to process the permits. Based on the study’s findings, the research concludes that there would be cost implications for project actors when implementing the permit-to-work requirement and this cost factor could delay project initiation and planning, as well as service delivery.
- Full Text:
- Date Issued: 2016
- Authors: Matete, Kenevoe Rose
- Date: 2016
- Subjects: Construction industry -- Safety regulations -- South Africa Construction industry -- Standards -- South Africa Industrial procurement -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/10309 , vital:26651
- Description: The Organisation of Economic Co-operation and Development (OECD) notes that regulations seek to make improvements by changing individual or organisational behaviour in ways that generate positive impacts in terms of solving societal and economic problems. At its most basic level, regulations are designed to work according to implementation, leading to changes in behaviours that, in turn, lead to changes in outcomes. Such outcomes can be satisfaction in terms of an underlying problem or other (hopefully positive) changes in conditions in the world. Following this premise, this research project investigates the implications of the 2014 Construction Regulations for the Department of Public Works’ procurement system. The study also examines the contents of the construction Regulations; the impact of the Construction Regulations 2014 – permit-to-work; client / contractor procurement issues; the enforcement of compliance to permit-to-work requirements, and education and training demands in relation to health and safety (H&S) competency. The study shows that even though industry role players are relatively familiar with the Construction Regulations 2014, there is a common concern regarding competency (education and training) levels required for the implementation of the permit-to-work requirement of the regulations. The concerns focus on the ability of the Department of Labour (DoL) to process the permits. Based on the study’s findings, the research concludes that there would be cost implications for project actors when implementing the permit-to-work requirement and this cost factor could delay project initiation and planning, as well as service delivery.
- Full Text:
- Date Issued: 2016