Pub Date : 2023-06-22DOI: 10.1080/01446193.2023.2226261
J. Rueda-Benavides, D. Gransberg, Mohamed S. Khalafalla, Cesar Mayorga
{"title":"Probabilistic cost-based decision-making matrix: IDIQ vs. DBB contracting","authors":"J. Rueda-Benavides, D. Gransberg, Mohamed S. Khalafalla, Cesar Mayorga","doi":"10.1080/01446193.2023.2226261","DOIUrl":"https://doi.org/10.1080/01446193.2023.2226261","url":null,"abstract":"","PeriodicalId":51389,"journal":{"name":"Construction Management and Economics","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49094925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-20DOI: 10.1080/01446193.2023.2211179
Qian Xu, B. Hwang, Rui Qi Choo, Xian-yong Zheng, Lei Kong, Qian-Cheng Wang, Xuan Liu
Abstract The outbreak of COVID-19 pandemic has caused worldwide disruption in construction industry. Although an increasing number of construction projects have been resumed, construction industry still faces significant risks due to the pandemic. The comparison of risk factors faced by construction industry before and during the pandemic helps us understand the dynamic risk transformation brought by the pandemic; however, few efforts have been made to understand the risk changes in construction sector. This study assessed the likelihood, impact, and criticality of risks brought by the pandemic in construction industry through a comparative analysis using Singapore as an example and proposed an innovative risk management solution to manage these risks accordingly. Survey questionnaires and semi-structured interviews were adopted. The finding indicated effective relief measures from the government to relieve the contractors’ liability in Singapore. Due to the pandemic, prioritized likelihood of risk occurrence changed from financial risk to labour shortage. Moreover, the finding highlighted that safety and health risks required significant attention, as they were ranked top in both periods. This study aids the understanding of how prioritized risks shifted during the pandemic and enlightens a promising and scalable risk management solution for industry stakeholders to establish better recovery from similar pandemics.
{"title":"Comparison of construction project risks before and during COVID-19 in Singapore: criticality and management strategies","authors":"Qian Xu, B. Hwang, Rui Qi Choo, Xian-yong Zheng, Lei Kong, Qian-Cheng Wang, Xuan Liu","doi":"10.1080/01446193.2023.2211179","DOIUrl":"https://doi.org/10.1080/01446193.2023.2211179","url":null,"abstract":"Abstract The outbreak of COVID-19 pandemic has caused worldwide disruption in construction industry. Although an increasing number of construction projects have been resumed, construction industry still faces significant risks due to the pandemic. The comparison of risk factors faced by construction industry before and during the pandemic helps us understand the dynamic risk transformation brought by the pandemic; however, few efforts have been made to understand the risk changes in construction sector. This study assessed the likelihood, impact, and criticality of risks brought by the pandemic in construction industry through a comparative analysis using Singapore as an example and proposed an innovative risk management solution to manage these risks accordingly. Survey questionnaires and semi-structured interviews were adopted. The finding indicated effective relief measures from the government to relieve the contractors’ liability in Singapore. Due to the pandemic, prioritized likelihood of risk occurrence changed from financial risk to labour shortage. Moreover, the finding highlighted that safety and health risks required significant attention, as they were ranked top in both periods. This study aids the understanding of how prioritized risks shifted during the pandemic and enlightens a promising and scalable risk management solution for industry stakeholders to establish better recovery from similar pandemics.","PeriodicalId":51389,"journal":{"name":"Construction Management and Economics","volume":"41 1","pages":"875 - 891"},"PeriodicalIF":3.4,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43722156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-10DOI: 10.1080/01446193.2023.2220832
Jun Wang, Xiaodong Li, A. Memari, M. Skitmore, Yuying Zhong, B. Ashuri
Abstract Construction supervision companies (CSCs) in China are engaged by owners mainly to ensure a project is constructed safely and to the quality standards as required under the law in a supervision system that has existed for decades, their credibility and integrity being vital for project safety assurance and quality control. Recently, the Chinese government has proposed a credit scoring mechanism to assess the credibility of CSCs and requested the incorporation of credit scores into the CSC selection processes for public projects. This study investigates the status quo of the credit scoring mechanism and evaluates how credit scores have impacted the competitiveness of CSCs when bidding for supervising public projects by analyzing the bidding results of 5582 public projects and credit scores of 514 CSCs in Nanjing, the capital city of Jiangsu Province in China. The results show that (1) the average CSC credit scores have followed a downward trend in recent years; (2) the score weights in the selection process have significantly increased and the scores start to impact on bidding results when their weights are at or above 4%; (3) signs of local protectionism have been observed as local CSCs have significantly higher credit scores than non-local CSCs; and (4) high scoring CSCs are more competitive than others in terms of revenue generation. The study provides an insightful understanding of China’s existing credit scoring mechanism and its impact on the selection of CSCs for public sector projects, often a major concern of policymakers, researchers, and industry practitioners.
{"title":"Data-driven assessment on the corporate credit scoring mechanism for Chinese construction supervision companies","authors":"Jun Wang, Xiaodong Li, A. Memari, M. Skitmore, Yuying Zhong, B. Ashuri","doi":"10.1080/01446193.2023.2220832","DOIUrl":"https://doi.org/10.1080/01446193.2023.2220832","url":null,"abstract":"Abstract Construction supervision companies (CSCs) in China are engaged by owners mainly to ensure a project is constructed safely and to the quality standards as required under the law in a supervision system that has existed for decades, their credibility and integrity being vital for project safety assurance and quality control. Recently, the Chinese government has proposed a credit scoring mechanism to assess the credibility of CSCs and requested the incorporation of credit scores into the CSC selection processes for public projects. This study investigates the status quo of the credit scoring mechanism and evaluates how credit scores have impacted the competitiveness of CSCs when bidding for supervising public projects by analyzing the bidding results of 5582 public projects and credit scores of 514 CSCs in Nanjing, the capital city of Jiangsu Province in China. The results show that (1) the average CSC credit scores have followed a downward trend in recent years; (2) the score weights in the selection process have significantly increased and the scores start to impact on bidding results when their weights are at or above 4%; (3) signs of local protectionism have been observed as local CSCs have significantly higher credit scores than non-local CSCs; and (4) high scoring CSCs are more competitive than others in terms of revenue generation. The study provides an insightful understanding of China’s existing credit scoring mechanism and its impact on the selection of CSCs for public sector projects, often a major concern of policymakers, researchers, and industry practitioners.","PeriodicalId":51389,"journal":{"name":"Construction Management and Economics","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43727947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-05DOI: 10.1080/01446193.2023.2210695
Erwin Biersteker, A. V. Marrewijk
Abstract This study focuses upon knowledge governance mechanisms of integrating specialised knowledge on underground utilities in large infrastructure projects. The integration of knowledge is essential for the realisation of such projects. The study explores the formal and informal knowledge governance mechanisms in three large infrastructure projects and compares these mechanisms to reveal their effects on knowledge integration. The findings show that combining reward systems, project culture and trust are targeting the motivation of underground experts to share their knowledge and allocation of authority and project network are mechanisms aimed at the coordination between managers and underground experts to integrate knowledge. We contribute to studies on knowledge governance by enabling further empirical insight in the relationships between formal and informal mechanisms.
{"title":"Integrating knowledge in infrastructure projects: the interplay between formal and informal knowledge governance mechanisms","authors":"Erwin Biersteker, A. V. Marrewijk","doi":"10.1080/01446193.2023.2210695","DOIUrl":"https://doi.org/10.1080/01446193.2023.2210695","url":null,"abstract":"Abstract This study focuses upon knowledge governance mechanisms of integrating specialised knowledge on underground utilities in large infrastructure projects. The integration of knowledge is essential for the realisation of such projects. The study explores the formal and informal knowledge governance mechanisms in three large infrastructure projects and compares these mechanisms to reveal their effects on knowledge integration. The findings show that combining reward systems, project culture and trust are targeting the motivation of underground experts to share their knowledge and allocation of authority and project network are mechanisms aimed at the coordination between managers and underground experts to integrate knowledge. We contribute to studies on knowledge governance by enabling further empirical insight in the relationships between formal and informal mechanisms.","PeriodicalId":51389,"journal":{"name":"Construction Management and Economics","volume":"41 1","pages":"859 - 874"},"PeriodicalIF":3.4,"publicationDate":"2023-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49415293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-05DOI: 10.1080/01446193.2023.2218498
Réka Andersson, Maria Eidenskog
Abstract Building information modelling (BIM) is a digital tool that offers the possibility to collect and share a multitude of data about a building and increase collaboration across professional borders. However, the uptake of BIM in the construction industry has been relatively slow, and previous research has shown how BIM creates tensions in the workplace. In this article, we explore the impact of BIM on socio-technical knowledge practices, to understand how these are enabled or restricted by the use of BIM. Through a qualitative case study in Sweden, this article analyses BIM through a knowledge infrastructure framework to explain the relatively slow uptake of BIM in a new light. The results show that BIM lacks embeddedness in governmental and corporate practices and regulations and that it sometimes leads to the marginalization of some professions through changed organizations and the slow process of changing complex knowledge infrastructures. This suggests that a critical discussion of the role of BIM in relation to professional flexibility, construction project process organization and power over technological development is vital for the future development of the construction sector.
{"title":"Beyond barriers – exploring resistance towards BIM through a knowledge infrastructure framework","authors":"Réka Andersson, Maria Eidenskog","doi":"10.1080/01446193.2023.2218498","DOIUrl":"https://doi.org/10.1080/01446193.2023.2218498","url":null,"abstract":"Abstract Building information modelling (BIM) is a digital tool that offers the possibility to collect and share a multitude of data about a building and increase collaboration across professional borders. However, the uptake of BIM in the construction industry has been relatively slow, and previous research has shown how BIM creates tensions in the workplace. In this article, we explore the impact of BIM on socio-technical knowledge practices, to understand how these are enabled or restricted by the use of BIM. Through a qualitative case study in Sweden, this article analyses BIM through a knowledge infrastructure framework to explain the relatively slow uptake of BIM in a new light. The results show that BIM lacks embeddedness in governmental and corporate practices and regulations and that it sometimes leads to the marginalization of some professions through changed organizations and the slow process of changing complex knowledge infrastructures. This suggests that a critical discussion of the role of BIM in relation to professional flexibility, construction project process organization and power over technological development is vital for the future development of the construction sector.","PeriodicalId":51389,"journal":{"name":"Construction Management and Economics","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44258498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-02DOI: 10.1080/01446193.2023.2219351
Geoff Woolcott, M. Loosemore, R. Keast, Daniel Chamberlain
Abstract Young people’s unemployment and underemployment are acknowledged as serious and enduring problems in Australia and globally. Construction is one of the largest employers of young people, and social procurement of construction products and services has significant potential if harnessed to address this problem. This article argues that project-based intermediation offers critical new insights into how social procurement can be implemented in a construction context. Employing a single case study approach, the article uses ecological systems theory and concept mapping to examine the results of focus groups with twelve young people who transitioned to employment in the Australian construction industry through a unique project-based intermediary set up by a major contractor to meet its social procurement requirements. Addressing the current under-theorisation of social procurement research, this article offers new conceptual insights into the socio-ecological networks that influence young people’s successful transition to employment in construction. The findings also provide new practical insights for government policymakers and the construction industry into the potential role that project-based intermediation can play in addressing youth unemployment in the context of emerging social procurement policies in many countries.
{"title":"Addressing youth un/underemployment through construction social procurement: an ecological systems theory perspective","authors":"Geoff Woolcott, M. Loosemore, R. Keast, Daniel Chamberlain","doi":"10.1080/01446193.2023.2219351","DOIUrl":"https://doi.org/10.1080/01446193.2023.2219351","url":null,"abstract":"Abstract Young people’s unemployment and underemployment are acknowledged as serious and enduring problems in Australia and globally. Construction is one of the largest employers of young people, and social procurement of construction products and services has significant potential if harnessed to address this problem. This article argues that project-based intermediation offers critical new insights into how social procurement can be implemented in a construction context. Employing a single case study approach, the article uses ecological systems theory and concept mapping to examine the results of focus groups with twelve young people who transitioned to employment in the Australian construction industry through a unique project-based intermediary set up by a major contractor to meet its social procurement requirements. Addressing the current under-theorisation of social procurement research, this article offers new conceptual insights into the socio-ecological networks that influence young people’s successful transition to employment in construction. The findings also provide new practical insights for government policymakers and the construction industry into the potential role that project-based intermediation can play in addressing youth unemployment in the context of emerging social procurement policies in many countries.","PeriodicalId":51389,"journal":{"name":"Construction Management and Economics","volume":"1 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41812303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-29DOI: 10.1080/01446193.2023.2216319
Xiuqin Wang, Shu-Fan Wang, Ying Gao
Abstract More often than not, in typical public-private partnership (PPP) projects, the construction contractor (CC) and operating contractor (OC) serve as shareholders simultaneously. CC and OC shareholders have different payback periods and paths, which may result in opportunistic risk. Therefore, an optimal equity structure is required to lower this risk. Based on cooperative game theory, a game model was developed to determine the optimal equity structure between CC and OC. The findings indicate that when the relative complexity of PPP project construction is higher than that of operation, CC should be given a higher equity ratio. Conversely, when the relative complexity of PPP project operation is higher, OC should be given a higher equity ratio. When the construction and operation of the project are equally complex, allocating equity ratios according to market value can reduce transaction costs, based on transaction cost theory. The findings also suggest that increasing CC’s equity ratio can effectively motivate them to better complete the construction work in the long run when the benefits of construction quality are significant. As for OC, increasing bonuses is also an effective incentive method. These findings provide insights into the design of the equity structure of PPP projects to enhance their success.
{"title":"Optimal equity structure of PPP projects when private-sector shareholders’ “investor-contractor” dual roles is considered","authors":"Xiuqin Wang, Shu-Fan Wang, Ying Gao","doi":"10.1080/01446193.2023.2216319","DOIUrl":"https://doi.org/10.1080/01446193.2023.2216319","url":null,"abstract":"Abstract More often than not, in typical public-private partnership (PPP) projects, the construction contractor (CC) and operating contractor (OC) serve as shareholders simultaneously. CC and OC shareholders have different payback periods and paths, which may result in opportunistic risk. Therefore, an optimal equity structure is required to lower this risk. Based on cooperative game theory, a game model was developed to determine the optimal equity structure between CC and OC. The findings indicate that when the relative complexity of PPP project construction is higher than that of operation, CC should be given a higher equity ratio. Conversely, when the relative complexity of PPP project operation is higher, OC should be given a higher equity ratio. When the construction and operation of the project are equally complex, allocating equity ratios according to market value can reduce transaction costs, based on transaction cost theory. The findings also suggest that increasing CC’s equity ratio can effectively motivate them to better complete the construction work in the long run when the benefits of construction quality are significant. As for OC, increasing bonuses is also an effective incentive method. These findings provide insights into the design of the equity structure of PPP projects to enhance their success.","PeriodicalId":51389,"journal":{"name":"Construction Management and Economics","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42428243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-23DOI: 10.1080/01446193.2023.2214252
P. Gluch, Stina Hellsvik
Abstract Organizational aspects, rather than technological ones, often represent the greatest barrier in the transition toward sustainable construction. However, despite sustainability professionals’ recognized role in sustainable development, few studies have focused on such professionals’ work. To understand the intrinsic influence of multiple institutional logics on the work and agency of sustainability professionals, we conducted 31 semi-structured interviews with sustainability professionals in Sweden’s construction industry. Building on the theoretical framework of institutional logics, the findings show how sustainability professionals’ everyday work, depending on the work conditions, is a blend of thankless, rewarding collaborative, and visionary work. In the organizational context of sustainable construction, characterized by dynamism and ambiguity, different institutional logics are combined in different ways to respond to shifting demands and problems. To maintain agency, sustainability professionals need to shift and balance their work depending on which logics are temporarily central. Showcasing how professionals cope with institutional contexts defined by multiple logics, the paper highlights the complexity involved in managing the vastness and ambiguity of sustainability and how it requires individuals to be both flexible and sensitive to the existence of multiple logics in their immediate context.
{"title":"The influence of multiple logics on the work of sustainability professionals","authors":"P. Gluch, Stina Hellsvik","doi":"10.1080/01446193.2023.2214252","DOIUrl":"https://doi.org/10.1080/01446193.2023.2214252","url":null,"abstract":"Abstract Organizational aspects, rather than technological ones, often represent the greatest barrier in the transition toward sustainable construction. However, despite sustainability professionals’ recognized role in sustainable development, few studies have focused on such professionals’ work. To understand the intrinsic influence of multiple institutional logics on the work and agency of sustainability professionals, we conducted 31 semi-structured interviews with sustainability professionals in Sweden’s construction industry. Building on the theoretical framework of institutional logics, the findings show how sustainability professionals’ everyday work, depending on the work conditions, is a blend of thankless, rewarding collaborative, and visionary work. In the organizational context of sustainable construction, characterized by dynamism and ambiguity, different institutional logics are combined in different ways to respond to shifting demands and problems. To maintain agency, sustainability professionals need to shift and balance their work depending on which logics are temporarily central. Showcasing how professionals cope with institutional contexts defined by multiple logics, the paper highlights the complexity involved in managing the vastness and ambiguity of sustainability and how it requires individuals to be both flexible and sensitive to the existence of multiple logics in their immediate context.","PeriodicalId":51389,"journal":{"name":"Construction Management and Economics","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42636518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-12DOI: 10.1080/01446193.2023.2210693
Cheng Wu, N. Brookes, C. Unterhitzenberger, Nancy Olson
Abstract A substantive body of work in project studies argues that an “information flow” lens is very useful in exploring the project management of construction. This paper posits that this is even more applicable to disaster construction projects and, furthermore, lean information flow may play a role in swiftly delivering the disaster construction project. The paper uses the qualitative empirics of the delivery of the UK’s Covid surge hospital projects to demonstrate that lean information flows were employed in these projects and assisted in enabling delivery at speed. The paper also describes the autopoietic governance conditions that are necessary for lean information flows to flourish in disaster construction projects and the role that trust may play in these conditions. It warns against some of the drawbacks in enabling lean communication through autopoietic governance.
{"title":"The role of lean information flows in disaster construction projects: exploring the UK’s Covid surge hospital projects","authors":"Cheng Wu, N. Brookes, C. Unterhitzenberger, Nancy Olson","doi":"10.1080/01446193.2023.2210693","DOIUrl":"https://doi.org/10.1080/01446193.2023.2210693","url":null,"abstract":"Abstract A substantive body of work in project studies argues that an “information flow” lens is very useful in exploring the project management of construction. This paper posits that this is even more applicable to disaster construction projects and, furthermore, lean information flow may play a role in swiftly delivering the disaster construction project. The paper uses the qualitative empirics of the delivery of the UK’s Covid surge hospital projects to demonstrate that lean information flows were employed in these projects and assisted in enabling delivery at speed. The paper also describes the autopoietic governance conditions that are necessary for lean information flows to flourish in disaster construction projects and the role that trust may play in these conditions. It warns against some of the drawbacks in enabling lean communication through autopoietic governance.","PeriodicalId":51389,"journal":{"name":"Construction Management and Economics","volume":"41 1","pages":"840 - 858"},"PeriodicalIF":3.4,"publicationDate":"2023-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45181108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-11DOI: 10.1080/01446193.2023.2209667
B. Ginigaddara, S. Perera, Yingbin Feng, P. Rahnamayiezekavat, R. Thomson
Abstract Offsite construction (OSC) transfers onsite construction activities to factory-based processes utilising technological advancements, resulting in new and emerging skills while causing some existing skills to be changed and others to be redundant. However, there are no established methods to systematically quantify these OSC skill requirements. This paper presents OSC skill prediction models while highlighting the process of model development for future research. The aim of these models is to predict skills using a comparable measure, manhours/m2. A skill classification with six skill categories was used to analyse OSC skills. Numerical model development methods were reviewed, and mixed-effect regression modelling was selected for model development. The skills data needed for regression modelling was collected using eight case studies. Predominantly panelised and modular OSC projects were used to collect skills data. The skill prediction models were validated using further case study data and an expert forum. Comparatively, modules OSC type requires higher skill quantities than panels, for all the six skill categories analysed. Onsite and offsite skill requirements vary for different OSC types. Additionally, complex, non-linear relationships were recognised between OSC types and the utilisation of their skills. This research presents unique OSC skill prediction models that can provide early-stage advice to policymakers, project planners and manufacturers on OSC skill requirements. It also provides a novel methodology to develop predictive models for specific industry scenarios that have non-linear and complex relationships.
{"title":"Development of offsite construction skill profile prediction models using mixed-effect regression analysis","authors":"B. Ginigaddara, S. Perera, Yingbin Feng, P. Rahnamayiezekavat, R. Thomson","doi":"10.1080/01446193.2023.2209667","DOIUrl":"https://doi.org/10.1080/01446193.2023.2209667","url":null,"abstract":"Abstract Offsite construction (OSC) transfers onsite construction activities to factory-based processes utilising technological advancements, resulting in new and emerging skills while causing some existing skills to be changed and others to be redundant. However, there are no established methods to systematically quantify these OSC skill requirements. This paper presents OSC skill prediction models while highlighting the process of model development for future research. The aim of these models is to predict skills using a comparable measure, manhours/m2. A skill classification with six skill categories was used to analyse OSC skills. Numerical model development methods were reviewed, and mixed-effect regression modelling was selected for model development. The skills data needed for regression modelling was collected using eight case studies. Predominantly panelised and modular OSC projects were used to collect skills data. The skill prediction models were validated using further case study data and an expert forum. Comparatively, modules OSC type requires higher skill quantities than panels, for all the six skill categories analysed. Onsite and offsite skill requirements vary for different OSC types. Additionally, complex, non-linear relationships were recognised between OSC types and the utilisation of their skills. This research presents unique OSC skill prediction models that can provide early-stage advice to policymakers, project planners and manufacturers on OSC skill requirements. It also provides a novel methodology to develop predictive models for specific industry scenarios that have non-linear and complex relationships.","PeriodicalId":51389,"journal":{"name":"Construction Management and Economics","volume":"41 1","pages":"820 - 839"},"PeriodicalIF":3.4,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47720967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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