The study examined the building design features of a cosmopolitan public office building in Abuja... more The study examined the building design features of a cosmopolitan public office building in Abuja. The features were classified into Spatial Plan, Structure and Facilities, to determine which of the 3 variables requires urgent sustainable improvement from end-users' perspective in existing public office buildings in developing countries. A quantitative approach was adopted while the research strategy involved survey and direct observation. Post-Occupancy Evaluation was used to collect the survey data on a massive public office building in Nigeria, which reflected the quota system and federal character of the nation, as study area. A total of 339 useable questionnaires were retrieved from the respondents, and the analysis conducted revealed that facilities requires the most urgent improvement for sustainability. It was therefore recommended that facilities should be given priority for successful sustainable improvement of public office buildings above other design features
The improvement of existing buildings had been argued as a major approach to attain sustainabilit... more The improvement of existing buildings had been argued as a major approach to attain sustainability in the built environment, especially in the developing countries. However, literature had shown that users’ requirement, which are hardly met in improved buildings, is a basis for attaining sustainable improvement. The research thus approached sustainable improvement of public office buildings through the lean thinking concept, which involves the application of muda to the typical improvement diagnosis technique for enhanced assessment of users’ requirement. The research methodology involved the quantitative method, using diagnostic Post Occupancy Evaluation (POE) as data acquiring tool from the Federal Secretariat complex, Bauchi in Nigeria, with confirmatory factor analysis carried out using Structural Equation Modelling (SEM), a statistical tool used to analyze the inter-relationships between perceived muda, job productivity and design features variables in the study area. Survey qu...
The study examined the building design features of a cosmopolitan public office building in Abuja... more The study examined the building design features of a cosmopolitan public office building in Abuja. The features were classified into Spatial Plan, Structure and Facilities, to determine which of the 3 variables requires urgent sustainable improvement from end-users' perspective in existing public office buildings in developing countries. A quantitative approach was adopted while the research strategy involved survey and direct observation. Post-Occupancy Evaluation was used to collect the survey data on a massive public office building in Nigeria, which reflected the quota system and federal character of the nation, as study area. A total of 339 useable questionnaires were retrieved from the respondents, and the analysis conducted revealed that facilities requires the most urgent improvement for sustainability. It was therefore recommended that facilities should be given priority for successful sustainable improvement of public office buildings above other design features. Keywo...
The improvement of existing buildings had been argued to be a major approach in attaining sustain... more The improvement of existing buildings had been argued to be a major approach in attaining sustainability in the built environment, especially in developing countries. However, literature review had shown that users’ requirement, which is the basis of accomplishing sustainable improvement were hardly met in improved buildings. The paper thus approached the sustainable improvement diagnosis technique of public office buildings through the enhancement of users’ requirement assessment using the lean thinking concept, which emphasized improvement from end-users’ perspective. The research adopted the quantitative method, using diagnostic Post Occupancy Evaluation as data acquiring tool from a massive office complex in Nigeria. The research concluded that lean thinking can enhance the assessment of users’ requirement in existing public office building improvement diagnosis in developing countries, however, the approach can only be used as a supplement and not a replacement of the diagnosis...
This study looked into the relevance of lean thinking, particularly the application of muda as a ... more This study looked into the relevance of lean thinking, particularly the application of muda as a supplement to the sustainable improvement diagnosis technique of existing office buildings, for a fuller assessment of user's requirement in Nigeria. The impact of muda as related to the triple bottom line of sustainable development on perceived job productivity and design features was estimated from end-user's perspective, using diagnostic POE as data acquiring tool while the confirmatory analysis was done through AMOS, SPSS and MS Excel to explain the relationship between the different variables. The findings showed that muda is inherent in public office buildings and it has highly significant causal effects of 0.66 and 0.76, respectively on perceived job productivity and design features; it also has strong effect sizes of 44 and 58% in explaining both their variances, respectively. The result revealed that users require more improvement in facilities as against spatial plan an...
British Journal of Applied Science & Technology, 2015
ABSTRACT Aims: Many countries, especially in the developing world, did not meet the UN target of ... more ABSTRACT Aims: Many countries, especially in the developing world, did not meet the UN target of 2002 to achieve sustainable development (SD) in their built environment mainly because the issue of existing buildings which form the bulk of building stock were not adequately addressed. This research paper examined the improvement of existing public office buildings in developing countries, using the Lean Thinking strategy for the identification of perceived waste and inefficient facilities for sustainability. Study Design: The paper did a literature review on improvement models for sustainability. Place and Duration of Study: Department of Real Estate Management, UTHM, Johor, from May, 2013 to date. Methodology: The identified improvement models were examined from the perspective of their scope; the triple bottom lines of SD addressed; research framework; philosophies, paradigms; and their applications to decide an appropriate model for improvement of existing buildings for sustainability. A research framework was subsequently developed for the adopted model. Results: The lean model and the diagnostic post-occupancy evaluation (POE) tool were adopted for the study, with a working depth limited to the systematic evaluation of opinion to determine Original Research Article Adeyemi et al.; BJAST, 5(1): 60-75, 2015; Article no.BJAST.2015.005 61 waste and inefficiencies in the building from the perspective of the occupants, in order to assess how well the building match their satisfaction, expectancies and needs, and identifies ways to improve the building design standard, performance and fitness for purpose. Conclusion: There is no doubt that there are a number of other factors and barriers that affect our ability to make existing building stock more sustainable. However, until these two major issues of waste, and inefficient facilities are addressed in built assets, the pace of SD in the developing countries may remain slow. The paper also revealed that the improvement of existing buildings is cheaper and more environmental friendly than rebuild, and will also reduce maintenance cost.
Many countries, especially in the developing world, did not meet the UN target of 2002 to achieve... more Many countries, especially in the developing world, did not meet the UN target of 2002 to achieve sustainable development because the issue of existing buildings which form the bulk of building stock were not adequately addressed. This paper did a literature review on how existing buildings could be sustained through improvement as against maintenance and rebuild; it revealed that the maintenance of unsustainable buildings could at best be returned to their unsustainable original standard at construction, while rebuild is costlier and less environmental friendly. Improvement is noted to be cheaper and more environmental friendly than rebuild, and will also reduce maintenance cost. The paper also reviewed some improvement models that can be applied for elimination of perceived waste and inefficiencies in existing buildings for sustainability.
This paper gives a pictorial view of the relevance of lean thinking, particularly the application... more This paper gives a pictorial view of the relevance of lean thinking, particularly the application of muda as a supplement to the sustainable improvement diagnosis technique of existing public office buildings, for a fuller assessment of users’ requirement in Nigeria. The impact of perceived muda was related to the triple bottom line of sustainable development on perceived job productivity and design features and estimated from endusers’ perspective, using diagnostic POE as data acquiring tool, while the confirmatory analysis was done through AMOS, SPSS and MS Excel to explain the relationship between the different variables. The findings showed that muda is inherent in public office buildings and it has highly significant causal effects of 0.66 and 0.76 respectively on perceived job productivity and design features; it also has strong effect sizes of 44% and 58% in explaining both their variances respectively. The result revealed that users require more improvement in facilities as ...
A major reason why many developing nations have not made significant advancement in sustainable d... more A major reason why many developing nations have not made significant advancement in sustainable development (SD) agenda is the neglect of existing building stock which forms the bulk of built assets. Although sustainable development is a universal challenge, it cannot be approached in the same way for all nations, but rather practical response can be defined nationally or locally. This paper reviewed literature into the possibility of using an improvement strategy model to eliminate waste and inefficient facilities in existing buildings from occupants and property managers' view points for sustainability in developing nations using Nigeria as an example while emphasis is placed on the multi-stakeholder/interdisciplinary approach in which each professional in the built environment add discipline-specific data to a single shared model. Many writers have criticized the ignorance of end-user requirements during the construction briefing, highlighting the communications gap between t...
The study examined the building design features of a cosmopolitan public office building in Abuja... more The study examined the building design features of a cosmopolitan public office building in Abuja. The features were classified into Spatial Plan, Structure and Facilities, to determine which of the 3 variables requires urgent sustainable improvement from end-users' perspective in existing public office buildings in developing countries. A quantitative approach was adopted while the research strategy involved survey and direct observation. Post-Occupancy Evaluation was used to collect the survey data on a massive public office building in Nigeria, which reflected the quota system and federal character of the nation, as study area. A total of 339 useable questionnaires were retrieved from the respondents, and the analysis conducted revealed that facilities requires the most urgent improvement for sustainability. It was therefore recommended that facilities should be given priority for successful sustainable improvement of public office buildings above other design features
The improvement of existing buildings had been argued as a major approach to attain sustainabilit... more The improvement of existing buildings had been argued as a major approach to attain sustainability in the built environment, especially in the developing countries. However, literature had shown that users’ requirement, which are hardly met in improved buildings, is a basis for attaining sustainable improvement. The research thus approached sustainable improvement of public office buildings through the lean thinking concept, which involves the application of muda to the typical improvement diagnosis technique for enhanced assessment of users’ requirement. The research methodology involved the quantitative method, using diagnostic Post Occupancy Evaluation (POE) as data acquiring tool from the Federal Secretariat complex, Bauchi in Nigeria, with confirmatory factor analysis carried out using Structural Equation Modelling (SEM), a statistical tool used to analyze the inter-relationships between perceived muda, job productivity and design features variables in the study area. Survey qu...
The study examined the building design features of a cosmopolitan public office building in Abuja... more The study examined the building design features of a cosmopolitan public office building in Abuja. The features were classified into Spatial Plan, Structure and Facilities, to determine which of the 3 variables requires urgent sustainable improvement from end-users' perspective in existing public office buildings in developing countries. A quantitative approach was adopted while the research strategy involved survey and direct observation. Post-Occupancy Evaluation was used to collect the survey data on a massive public office building in Nigeria, which reflected the quota system and federal character of the nation, as study area. A total of 339 useable questionnaires were retrieved from the respondents, and the analysis conducted revealed that facilities requires the most urgent improvement for sustainability. It was therefore recommended that facilities should be given priority for successful sustainable improvement of public office buildings above other design features. Keywo...
The improvement of existing buildings had been argued to be a major approach in attaining sustain... more The improvement of existing buildings had been argued to be a major approach in attaining sustainability in the built environment, especially in developing countries. However, literature review had shown that users’ requirement, which is the basis of accomplishing sustainable improvement were hardly met in improved buildings. The paper thus approached the sustainable improvement diagnosis technique of public office buildings through the enhancement of users’ requirement assessment using the lean thinking concept, which emphasized improvement from end-users’ perspective. The research adopted the quantitative method, using diagnostic Post Occupancy Evaluation as data acquiring tool from a massive office complex in Nigeria. The research concluded that lean thinking can enhance the assessment of users’ requirement in existing public office building improvement diagnosis in developing countries, however, the approach can only be used as a supplement and not a replacement of the diagnosis...
This study looked into the relevance of lean thinking, particularly the application of muda as a ... more This study looked into the relevance of lean thinking, particularly the application of muda as a supplement to the sustainable improvement diagnosis technique of existing office buildings, for a fuller assessment of user's requirement in Nigeria. The impact of muda as related to the triple bottom line of sustainable development on perceived job productivity and design features was estimated from end-user's perspective, using diagnostic POE as data acquiring tool while the confirmatory analysis was done through AMOS, SPSS and MS Excel to explain the relationship between the different variables. The findings showed that muda is inherent in public office buildings and it has highly significant causal effects of 0.66 and 0.76, respectively on perceived job productivity and design features; it also has strong effect sizes of 44 and 58% in explaining both their variances, respectively. The result revealed that users require more improvement in facilities as against spatial plan an...
British Journal of Applied Science & Technology, 2015
ABSTRACT Aims: Many countries, especially in the developing world, did not meet the UN target of ... more ABSTRACT Aims: Many countries, especially in the developing world, did not meet the UN target of 2002 to achieve sustainable development (SD) in their built environment mainly because the issue of existing buildings which form the bulk of building stock were not adequately addressed. This research paper examined the improvement of existing public office buildings in developing countries, using the Lean Thinking strategy for the identification of perceived waste and inefficient facilities for sustainability. Study Design: The paper did a literature review on improvement models for sustainability. Place and Duration of Study: Department of Real Estate Management, UTHM, Johor, from May, 2013 to date. Methodology: The identified improvement models were examined from the perspective of their scope; the triple bottom lines of SD addressed; research framework; philosophies, paradigms; and their applications to decide an appropriate model for improvement of existing buildings for sustainability. A research framework was subsequently developed for the adopted model. Results: The lean model and the diagnostic post-occupancy evaluation (POE) tool were adopted for the study, with a working depth limited to the systematic evaluation of opinion to determine Original Research Article Adeyemi et al.; BJAST, 5(1): 60-75, 2015; Article no.BJAST.2015.005 61 waste and inefficiencies in the building from the perspective of the occupants, in order to assess how well the building match their satisfaction, expectancies and needs, and identifies ways to improve the building design standard, performance and fitness for purpose. Conclusion: There is no doubt that there are a number of other factors and barriers that affect our ability to make existing building stock more sustainable. However, until these two major issues of waste, and inefficient facilities are addressed in built assets, the pace of SD in the developing countries may remain slow. The paper also revealed that the improvement of existing buildings is cheaper and more environmental friendly than rebuild, and will also reduce maintenance cost.
Many countries, especially in the developing world, did not meet the UN target of 2002 to achieve... more Many countries, especially in the developing world, did not meet the UN target of 2002 to achieve sustainable development because the issue of existing buildings which form the bulk of building stock were not adequately addressed. This paper did a literature review on how existing buildings could be sustained through improvement as against maintenance and rebuild; it revealed that the maintenance of unsustainable buildings could at best be returned to their unsustainable original standard at construction, while rebuild is costlier and less environmental friendly. Improvement is noted to be cheaper and more environmental friendly than rebuild, and will also reduce maintenance cost. The paper also reviewed some improvement models that can be applied for elimination of perceived waste and inefficiencies in existing buildings for sustainability.
This paper gives a pictorial view of the relevance of lean thinking, particularly the application... more This paper gives a pictorial view of the relevance of lean thinking, particularly the application of muda as a supplement to the sustainable improvement diagnosis technique of existing public office buildings, for a fuller assessment of users’ requirement in Nigeria. The impact of perceived muda was related to the triple bottom line of sustainable development on perceived job productivity and design features and estimated from endusers’ perspective, using diagnostic POE as data acquiring tool, while the confirmatory analysis was done through AMOS, SPSS and MS Excel to explain the relationship between the different variables. The findings showed that muda is inherent in public office buildings and it has highly significant causal effects of 0.66 and 0.76 respectively on perceived job productivity and design features; it also has strong effect sizes of 44% and 58% in explaining both their variances respectively. The result revealed that users require more improvement in facilities as ...
A major reason why many developing nations have not made significant advancement in sustainable d... more A major reason why many developing nations have not made significant advancement in sustainable development (SD) agenda is the neglect of existing building stock which forms the bulk of built assets. Although sustainable development is a universal challenge, it cannot be approached in the same way for all nations, but rather practical response can be defined nationally or locally. This paper reviewed literature into the possibility of using an improvement strategy model to eliminate waste and inefficient facilities in existing buildings from occupants and property managers' view points for sustainability in developing nations using Nigeria as an example while emphasis is placed on the multi-stakeholder/interdisciplinary approach in which each professional in the built environment add discipline-specific data to a single shared model. Many writers have criticized the ignorance of end-user requirements during the construction briefing, highlighting the communications gap between t...
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