The COVID-19 pandemic has left a significant impact on the survival of the global construction industry and its stakeholders including quantity surveyors. Outsourcing is recognised as a business strategy which can be tried for consultants quantity surveying organisations for surviving in the construction industry during a pandemic period. Due to the absence of previous studies that evaluated the effectiveness of outsourcing consultants quantity surveying activities in the Sri Lankan context following the pandemic, this study intends to fill the aforementioned research gap. As a result, the research was aimed at examining the feasibility of outsourcing key consultants' quantity surveying activities in the Sri Lankan context following the pandemic. A thorough literature review was carried out in order to investigate the possibility of outsourcing key consultant quantity surveying activities in Sri Lanka during the post-pandemic era. To achieve the goal of this research, a mixed-method approach with structured expert interviews and a questionnaire survey was used. Thematic analysis using QSR Nvivo version 12 software and the RII method was used to analyse the data. The most suitable activities for outsourcing in Sri Lanka during the post-pandemic era were identified as BIM model creation, BOQ preparation, and BOQ verification. The study's findings revealed the possibility of outsourcing the quantity surveying activities of consultants in Sri Lanka during the post-pandemic era. Furthermore, the findings of this study can be used to identify prevalent motivating factors for introducing or improving the outsourcing concept as well as to put into practice within consultant quantity surveying organisations.
新冠肺炎疫情对全球建筑行业及其包括工料测量师在内的利益相关者的生存造成了重大影响。外包被认为是一种商业策略，可以尝试顾问工料测量机构在大流行期间在建筑业生存。由于缺乏先前的研究，评估外包顾问数量测量活动的有效性在斯里兰卡大流行后的背景下，本研究打算填补上述研究空白。因此，这项研究的目的是审查在大流行病之后将主要顾问的工料测量活动外包给斯里兰卡的可行性。进行了彻底的文献审查，以调查大流行后时期斯里兰卡外包关键顾问工料测量活动的可能性。为了达到本研究的目的，采用了结构化专家访谈和问卷调查相结合的混合方法。采用QSR Nvivo version 12软件进行主题分析，采用RII方法对数据进行分析。在大流行后的时代，斯里兰卡最适合外包的活动被确定为BIM模型创建、BOQ准备和BOQ验证。研究结果表明，在大流行后时期，斯里兰卡有可能将顾问的工料测量活动外包。此外，这项研究的结果可用于找出普遍的激励因素，以引入或改善外判概念，并在顾问工料测量机构内付诸实施。
{"title":"Outsourcing consultant quantity surveying activities during the post-pandemic era","authors":"D. Samarathunga, I. Gamage, V. Lingasabesan","doi":"10.31705/wcs.2023.68","DOIUrl":"https://doi.org/10.31705/wcs.2023.68","url":null,"abstract":"The COVID-19 pandemic has left a significant impact on the survival of the global construction industry and its stakeholders including quantity surveyors. Outsourcing is recognised as a business strategy which can be tried for consultants quantity surveying organisations for surviving in the construction industry during a pandemic period. Due to the absence of previous studies that evaluated the effectiveness of outsourcing consultants quantity surveying activities in the Sri Lankan context following the pandemic, this study intends to fill the aforementioned research gap. As a result, the research was aimed at examining the feasibility of outsourcing key consultants' quantity surveying activities in the Sri Lankan context following the pandemic. A thorough literature review was carried out in order to investigate the possibility of outsourcing key consultant quantity surveying activities in Sri Lanka during the post-pandemic era. To achieve the goal of this research, a mixed-method approach with structured expert interviews and a questionnaire survey was used. Thematic analysis using QSR Nvivo version 12 software and the RII method was used to analyse the data. The most suitable activities for outsourcing in Sri Lanka during the post-pandemic era were identified as BIM model creation, BOQ preparation, and BOQ verification. The study's findings revealed the possibility of outsourcing the quantity surveying activities of consultants in Sri Lanka during the post-pandemic era. Furthermore, the findings of this study can be used to identify prevalent motivating factors for introducing or improving the outsourcing concept as well as to put into practice within consultant quantity surveying organisations.","PeriodicalId":221447,"journal":{"name":"11th World Construction Symposium - 2023","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132184893","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}
The construction industry is rapidly growing in Sri Lanka, leading to an increase in the amount of waste generated from building projects. This waste often ends up in landfills or is disposed of in an unorganised manner, causing environmental and health hazards. While there is a growing body of research on Construction & Demolition (C&D) Waste Management (WM) including Zero waste, there is lack of studies available on the management of WM issues according to the life cycle of building projects in Sri Lanka. Hence, this study aims to investigate the C&D WM issues in Sri Lanka according to the life cycle of building projects. The study adopts a qualitative approach that involves conducting two rounds of expert interviews following the Delphi method and using manual content analysis to analyse the collected data. According to building life cycle, WM issues are categorised as Preconstruction; Construction and Building Renovation; Use and Operate; Demolitions and Repurpose and Material Recovery and Production. The research is significant as it provides insight into the current issues of C&D WM in Sri Lanka and offers recommendations for improvement. By categorising the issues based on the different stages of the project life cycle, it becomes easier to identify where in the process the C&D WM issues are most prevalent and to develop targeted solutions to address them.
{"title":"Construction and demolition waste management issues in building project life cycle stages: a case of Sri Lanka","authors":"H. C. Victar, K. Waidyasekara","doi":"10.31705/wcs.2023.33","DOIUrl":"https://doi.org/10.31705/wcs.2023.33","url":null,"abstract":"The construction industry is rapidly growing in Sri Lanka, leading to an increase in the amount of waste generated from building projects. This waste often ends up in landfills or is disposed of in an unorganised manner, causing environmental and health hazards. While there is a growing body of research on Construction & Demolition (C&D) Waste Management (WM) including Zero waste, there is lack of studies available on the management of WM issues according to the life cycle of building projects in Sri Lanka. Hence, this study aims to investigate the C&D WM issues in Sri Lanka according to the life cycle of building projects. The study adopts a qualitative approach that involves conducting two rounds of expert interviews following the Delphi method and using manual content analysis to analyse the collected data. According to building life cycle, WM issues are categorised as Preconstruction; Construction and Building Renovation; Use and Operate; Demolitions and Repurpose and Material Recovery and Production. The research is significant as it provides insight into the current issues of C&D WM in Sri Lanka and offers recommendations for improvement. By categorising the issues based on the different stages of the project life cycle, it becomes easier to identify where in the process the C&D WM issues are most prevalent and to develop targeted solutions to address them.","PeriodicalId":221447,"journal":{"name":"11th World Construction Symposium - 2023","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130856763","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}
K.D. Gurusinghe, K. Ranadewa, A. Parameswaran, D. Weerasooriya, M. Costa
Cargotecture is a sustainable housing solution that has gained popularity in recent years. However, its potential for Post Disaster Reconstruction (PDR) projects has not been fully explored locally and globally. This research aims to develop a framework to overcome the problems in the PDR projects through the implementation of cargotecture in Sri Lanka. A comprehensive literature review synthesises existing research on integrating cargotecture for PDR projects. The research adopted a mixed-method approach. A questionnaire survey was conducted with forty-five construction professionals selected through snowball sampling and data was analysed using RII analysis to identify the critical problems in PDR projects. Then, semi-structured interviews were conducted with ten experts selected through selective sampling. Code-based content analysis was used to identify problems in PDR projects and the benefits of integrating cargotecture for PDR projects. The study revealed 18 problems in PDR Projects, while high time consumption was identified as a significant problem in PDR Projects. Further, the study identified 17 benefits of integrating cargotecture for PDR projects, including reducing construction duration and modularity. The study developed a framework which offers industry practitioners significant insight into the possible use of ISO shipping containers as a sustainable and cost-effective disaster relief housing option. From an academic point of view, the study adds to the current literature on disaster relief housing by investigating the viability of employing ISO shipping containers. The study serves as the foundation for more detailed research on the social and environmental implications of employing shipping containers for disaster relief housing.
{"title":"Cargotecture to minimise problems in post-disaster reconstruction projects in Sri Lanka","authors":"K.D. Gurusinghe, K. Ranadewa, A. Parameswaran, D. Weerasooriya, M. Costa","doi":"10.31705/wcs.2023.27","DOIUrl":"https://doi.org/10.31705/wcs.2023.27","url":null,"abstract":"Cargotecture is a sustainable housing solution that has gained popularity in recent years. However, its potential for Post Disaster Reconstruction (PDR) projects has not been fully explored locally and globally. This research aims to develop a framework to overcome the problems in the PDR projects through the implementation of cargotecture in Sri Lanka. A comprehensive literature review synthesises existing research on integrating cargotecture for PDR projects. The research adopted a mixed-method approach. A questionnaire survey was conducted with forty-five construction professionals selected through snowball sampling and data was analysed using RII analysis to identify the critical problems in PDR projects. Then, semi-structured interviews were conducted with ten experts selected through selective sampling. Code-based content analysis was used to identify problems in PDR projects and the benefits of integrating cargotecture for PDR projects. The study revealed 18 problems in PDR Projects, while high time consumption was identified as a significant problem in PDR Projects. Further, the study identified 17 benefits of integrating cargotecture for PDR projects, including reducing construction duration and modularity. The study developed a framework which offers industry practitioners significant insight into the possible use of ISO shipping containers as a sustainable and cost-effective disaster relief housing option. From an academic point of view, the study adds to the current literature on disaster relief housing by investigating the viability of employing ISO shipping containers. The study serves as the foundation for more detailed research on the social and environmental implications of employing shipping containers for disaster relief housing.","PeriodicalId":221447,"journal":{"name":"11th World Construction Symposium - 2023","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126207579","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}
Modular integrated Construction (MiC) as a promising construction method has instigated significant advancements in the construction industry, especially in developed countries. However, the MiC has been becoming popular in developing countries such as Sri Lanka given its potential to improve construction efficiency, reduce cost and waste, and enhance quality. The design stage is considered critical in MiC since design errors can propagate to manufacturing and assembly issues and entire project failure. Further, as the Sri Lankan construction industry is in the preliminary stages of MiC implementation, the most risk-exposing stage is the design stage. Therefore, it is essential to explore the design stage risks (DSRs) affecting MiC in Sri Lanka to enable timely decision-making to withstand the potential risks in its implementation. Under these circumstances, this study proposed and developed a Social Network Analysis (SNA) model to identify the most critical DSRs and their co-relational impacts by probing and assessing the data collected through an industry expert survey. The findings revealed that the inaccuracy of design information, inadequate planning for design and unclear design specifications are the most critical DSRs in MiC initiation in Sri Lanka among the identified 14 total risks. Further, three significant risk categories were determined, and the co-relational impact of each risk was assessed as depicted in the SNA model. Moreover, the study findings would motivate industry professionals to appreciate and address the critical DSRs in the context of the three respective categories and thereby develop adequate measures to successfully withstand them to boost industrial performance.
{"title":"Modelling design stage risks in modular integrated construction projects in Sri Lanka","authors":"T.A.S. Sandeepani, E. Ekanayake, I. Ashayeri","doi":"10.31705/wcs.2023.66","DOIUrl":"https://doi.org/10.31705/wcs.2023.66","url":null,"abstract":"Modular integrated Construction (MiC) as a promising construction method has instigated significant advancements in the construction industry, especially in developed countries. However, the MiC has been becoming popular in developing countries such as Sri Lanka given its potential to improve construction efficiency, reduce cost and waste, and enhance quality. The design stage is considered critical in MiC since design errors can propagate to manufacturing and assembly issues and entire project failure. Further, as the Sri Lankan construction industry is in the preliminary stages of MiC implementation, the most risk-exposing stage is the design stage. Therefore, it is essential to explore the design stage risks (DSRs) affecting MiC in Sri Lanka to enable timely decision-making to withstand the potential risks in its implementation. Under these circumstances, this study proposed and developed a Social Network Analysis (SNA) model to identify the most critical DSRs and their co-relational impacts by probing and assessing the data collected through an industry expert survey. The findings revealed that the inaccuracy of design information, inadequate planning for design and unclear design specifications are the most critical DSRs in MiC initiation in Sri Lanka among the identified 14 total risks. Further, three significant risk categories were determined, and the co-relational impact of each risk was assessed as depicted in the SNA model. Moreover, the study findings would motivate industry professionals to appreciate and address the critical DSRs in the context of the three respective categories and thereby develop adequate measures to successfully withstand them to boost industrial performance.","PeriodicalId":221447,"journal":{"name":"11th World Construction Symposium - 2023","volume":"264 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116239598","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}
The nature of the contractual relationship between the contractor and the client creates opportunities for opportunistic behaviour (OB) on the part of the contractor, which can result in project delays, cost overruns, and quality issues. Project governance (PG) is a set of processes, policies, and procedures that aim to ensure the effective management and control of projects. It was identified that PG helps to minimise different issues related to construction projects where different stakeholders are involved. The use of trust and formal control as PG modes in the global construction industry is well-established. However, there is a lack of research specifically focusing on the appropriate PG modes to minimise the effects of Contractors’ Opportunistic Behaviour (COB) in the Sri Lankan construction industry. The purpose of this paper is to examine the use of PG modes to minimise COB. To address this research gap, a qualitative research approach was adopted in this study. A comprehensive literature review was conducted to gather knowledge and theories about PG modes and COB. Furthermore, case studies were conducted to investigate the synergy between the identified PG modes and COB management in the Sri Lankan context. These case studies involved real-world construction projects in Sri Lanka, where the researchers’ collected data through interviews. By analysing the findings of the literature review and case studies, this study aims to provide insights into the suitable PG modes that can be used to minimise the effects of COB in the Sri Lankan construction industry. The findings suggest that PG modes can be effective in COB. The use of a hybrid mode, for example, can create a partnership-like relationship between the client and the contractor, which promotes cooperation and trust while having some contractual obligations. Similarly, the use of a formal control mode, which involves the use of detailed contracts, can help to clarify the rights and obligations of the parties involved and reduce the likelihood of OB. Overall, the paper highlights the importance of PG in managing contractual relationships and minimising OB. It provides practical recommendations for clients and other stakeholders on how to select and implement appropriate PG modes to ensure successful project outcomes.
{"title":"The Use of project governance modes to minimise contractors’ opportunistic behaviour","authors":"B. Arsecularatne","doi":"10.31705/wcs.2023.86","DOIUrl":"https://doi.org/10.31705/wcs.2023.86","url":null,"abstract":"The nature of the contractual relationship between the contractor and the client creates opportunities for opportunistic behaviour (OB) on the part of the contractor, which can result in project delays, cost overruns, and quality issues. Project governance (PG) is a set of processes, policies, and procedures that aim to ensure the effective management and control of projects. It was identified that PG helps to minimise different issues related to construction projects where different stakeholders are involved. The use of trust and formal control as PG modes in the global construction industry is well-established. However, there is a lack of research specifically focusing on the appropriate PG modes to minimise the effects of Contractors’ Opportunistic Behaviour (COB) in the Sri Lankan construction industry. The purpose of this paper is to examine the use of PG modes to minimise COB. To address this research gap, a qualitative research approach was adopted in this study. A comprehensive literature review was conducted to gather knowledge and theories about PG modes and COB. Furthermore, case studies were conducted to investigate the synergy between the identified PG modes and COB management in the Sri Lankan context. These case studies involved real-world construction projects in Sri Lanka, where the researchers’ collected data through interviews. By analysing the findings of the literature review and case studies, this study aims to provide insights into the suitable PG modes that can be used to minimise the effects of COB in the Sri Lankan construction industry. The findings suggest that PG modes can be effective in COB. The use of a hybrid mode, for example, can create a partnership-like relationship between the client and the contractor, which promotes cooperation and trust while having some contractual obligations. Similarly, the use of a formal control mode, which involves the use of detailed contracts, can help to clarify the rights and obligations of the parties involved and reduce the likelihood of OB. Overall, the paper highlights the importance of PG in managing contractual relationships and minimising OB. It provides practical recommendations for clients and other stakeholders on how to select and implement appropriate PG modes to ensure successful project outcomes.","PeriodicalId":221447,"journal":{"name":"11th World Construction Symposium - 2023","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129448806","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}
Industrialisation has led to a massive increment in resource consumption and waste generation, which demands improved management strategies for Waste Management (WM), especially in Industrial Zones (IZ). Thus, the application of Industrial Symbiosis (IS) in an IZ is demanded as a solution. It is a collaborative approach in which different industries and organisations work together to create a closed-loop system that maximises resource efficiency, reduces waste, and improves environmental sustainability. Sri Lankan IZs still have not yet established a proper method to manage industrial waste, which has led to heaps of waste. Since IS is an effective and timely solution for this issue, this paper was intended to analyse barriers to the potential implementation of IS for better WM of IZs in Sri Lanka. A qualitative research approach with two case studies were used in this study. A total of 12 interviews were conducted and collected data was analysed using code-based content analysis. The barriers were extracted through the analysis of case findings using an abductive analysis. The empirical findings revealed 34 barriers under six categories, namely economic, organisational, regulatory, technological, risk and information. The higher initial cost, lack of financial ability, competition among participants, unavailability of institutional support, and lack of regulatory incentives for IS initiations were some of the key barriers identified in this study. The knowledge generated through this research can be used by respective industry practitioners to take informed decisions in addressing these barriers, which will be crucial to unlocking the potential of IS in IZ.
{"title":"The Potential of industrial symbiosis: an analysis of barriers to its implementation for better waste management in industrial zones in Sri Lanka","authors":"P. Herath, P. Dissanayake, G. Thisakya","doi":"10.31705/wcs.2023.85","DOIUrl":"https://doi.org/10.31705/wcs.2023.85","url":null,"abstract":"Industrialisation has led to a massive increment in resource consumption and waste generation, which demands improved management strategies for Waste Management (WM), especially in Industrial Zones (IZ). Thus, the application of Industrial Symbiosis (IS) in an IZ is demanded as a solution. It is a collaborative approach in which different industries and organisations work together to create a closed-loop system that maximises resource efficiency, reduces waste, and improves environmental sustainability. Sri Lankan IZs still have not yet established a proper method to manage industrial waste, which has led to heaps of waste. Since IS is an effective and timely solution for this issue, this paper was intended to analyse barriers to the potential implementation of IS for better WM of IZs in Sri Lanka. A qualitative research approach with two case studies were used in this study. A total of 12 interviews were conducted and collected data was analysed using code-based content analysis. The barriers were extracted through the analysis of case findings using an abductive analysis. The empirical findings revealed 34 barriers under six categories, namely economic, organisational, regulatory, technological, risk and information. The higher initial cost, lack of financial ability, competition among participants, unavailability of institutional support, and lack of regulatory incentives for IS initiations were some of the key barriers identified in this study. The knowledge generated through this research can be used by respective industry practitioners to take informed decisions in addressing these barriers, which will be crucial to unlocking the potential of IS in IZ.","PeriodicalId":221447,"journal":{"name":"11th World Construction Symposium - 2023","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128270487","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}
The construction industry is highly diverse and interconnects with many other industries The industry generated job opportunities to many and a significant economic multiplier. However, it was observed that an economic change in the country affects the industry adversely. The depletion of foreign currency reserves has significantly impacted Sri Lanka's construction industry in the recent past, from 2019 to date. Many stakeholders are currently encountering many issues, and as a result, many construction projects are in temporary shutdown. This study aimed to investigate the impact of foreign currency depletion on the Sri Lankan construction industry. The data collected from 15 semi-structured interviews conducted among professionals from the construction industry who work under contractors and professionals from the finance industry who are involved in the economic sector. A detailed literature study was undertaken to determine the causes and effects of the depletion of foreign reserves and qualitative semi-structured interviews were used to identify the positive and negative effects of the depletion of foreign currency on the construction industry. As a result, the findings featured results such as financial issues, unemployment, and frequent price escalation as severe impacts on the industry. The discussion also highlighted the strategies which are already imposed and suggested by the government and construction organisations. It included, implementing more foreign-funded projects, outsourcing new contracting or consulting overseas projects and expanding the export industry. Finally, the paper reveals the possible remedial strategies to minimise the impact of foreign currency depletion in the future.
{"title":"The Impact of the depletion of foreign currency reserves on the Sri Lankan construction industry","authors":"N. Jayasinghe, R. Palliyaguru","doi":"10.31705/wcs.2023.84","DOIUrl":"https://doi.org/10.31705/wcs.2023.84","url":null,"abstract":"The construction industry is highly diverse and interconnects with many other industries The industry generated job opportunities to many and a significant economic multiplier. However, it was observed that an economic change in the country affects the industry adversely. The depletion of foreign currency reserves has significantly impacted Sri Lanka's construction industry in the recent past, from 2019 to date. Many stakeholders are currently encountering many issues, and as a result, many construction projects are in temporary shutdown. This study aimed to investigate the impact of foreign currency depletion on the Sri Lankan construction industry. The data collected from 15 semi-structured interviews conducted among professionals from the construction industry who work under contractors and professionals from the finance industry who are involved in the economic sector. A detailed literature study was undertaken to determine the causes and effects of the depletion of foreign reserves and qualitative semi-structured interviews were used to identify the positive and negative effects of the depletion of foreign currency on the construction industry. As a result, the findings featured results such as financial issues, unemployment, and frequent price escalation as severe impacts on the industry. The discussion also highlighted the strategies which are already imposed and suggested by the government and construction organisations. It included, implementing more foreign-funded projects, outsourcing new contracting or consulting overseas projects and expanding the export industry. Finally, the paper reveals the possible remedial strategies to minimise the impact of foreign currency depletion in the future.","PeriodicalId":221447,"journal":{"name":"11th World Construction Symposium - 2023","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129985536","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}
Poor design and construction practices can significantly impact the future maintainability of green roofs in high-rise buildings. While previous studies have focused on green roof construction and design features, this research specifically evaluates the effects of design and construction related factors on maintainability of green roofs, with a focus on high-rise buildings in Sri Lanka. The study begins by reviewing literature on green roofs, their maintainability, and the design and construction factors that influence maintainability. The identified factors were used as a basis for evaluating the effects of design and construction on future maintainability of green roofs. A deductive approach is adopted within a quantitative research design, utilising a survey strategy. A questionnaire survey was conducted among 58 experienced construction professionals, while four expert interviews are conducted to gather additional insights. Data analysis techniques include the Relative Importance Index and content analysis. As derived through analysis, initial cost and roof design were identified as design-related key factors, while cost of construction and availability of machinery and materials were the construction related key factors influencing maintainability of green roofs. Accordingly, the study proposed strategies to enhance the maintainability of green roofs in Sri Lankan high-rise buildings focusing on cost effectiveness, design effectiveness and effective management of green roofs. As a main implication, this research contributes to the development of sustainable and maintainable green roofs in Sri Lanka by providing valuable insights for the construction professionals and policy makers in the country.
{"title":"Assessment of design and construction related factors influencing maintainability of green roofs: a case of high-rise buildings in Sri Lanka","authors":"G. Kulasekara, B. Mallawaarachchi, Agu Damsari","doi":"10.31705/wcs.2023.21","DOIUrl":"https://doi.org/10.31705/wcs.2023.21","url":null,"abstract":"Poor design and construction practices can significantly impact the future maintainability of green roofs in high-rise buildings. While previous studies have focused on green roof construction and design features, this research specifically evaluates the effects of design and construction related factors on maintainability of green roofs, with a focus on high-rise buildings in Sri Lanka. The study begins by reviewing literature on green roofs, their maintainability, and the design and construction factors that influence maintainability. The identified factors were used as a basis for evaluating the effects of design and construction on future maintainability of green roofs. A deductive approach is adopted within a quantitative research design, utilising a survey strategy. A questionnaire survey was conducted among 58 experienced construction professionals, while four expert interviews are conducted to gather additional insights. Data analysis techniques include the Relative Importance Index and content analysis. As derived through analysis, initial cost and roof design were identified as design-related key factors, while cost of construction and availability of machinery and materials were the construction related key factors influencing maintainability of green roofs. Accordingly, the study proposed strategies to enhance the maintainability of green roofs in Sri Lankan high-rise buildings focusing on cost effectiveness, design effectiveness and effective management of green roofs. As a main implication, this research contributes to the development of sustainable and maintainable green roofs in Sri Lanka by providing valuable insights for the construction professionals and policy makers in the country.","PeriodicalId":221447,"journal":{"name":"11th World Construction Symposium - 2023","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130097503","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}
In today's world, energy and human life are inextricably linked. Due to the scarcity of fossil fuels and rising prices, the world is shifting to renewable energy sources to acquire energy. The economic downturn and the government's inability to import fuel have exacerbated the energy crisis in the Sri Lankan context. Every day, prolonged power outages become a part of people's lives, which drives people to find alternative solutions. Even though solar PV systems are a popular renewable energy source in Sri Lanka, having an on-grid solar system has no advantages during power outages. Thus, Sri Lanka has an apparent demand for off-grid solar systems. Therefore, this study investigates the merits and demerits of utilising off-grid solar systems from key stakeholders' perspectives. Three key stakeholders were identified: government authorities, off-grid solar service provider companies and off-grid solar users. Twenty-five semi-structured interviews with key stakeholders were conducted after a thorough literature review. The collected interview data were analysed manually using content analysis. The study's findings revealed the significant merits of using off-grid solar systems in the Sri Lankan context as; the benefit of an uninterrupted power supply and reducing the national grid demand. The study revealed significant demerits: unavailability of proper regulations, capital-intensive investment, no return on investment and the lack of qualified people in the off-grid solar sector. The respective industry practitioners and stakeholders can use the knowledge gained from this study to promote and utilise future policy implications in the off-grid solar sector.
{"title":"Merits and demerits of off-grid solar systems: key stakeholders’ perspectives","authors":"D. Ranasinghe, K. Waidyasekara, D. Weerasooriya","doi":"10.31705/wcs.2023.63","DOIUrl":"https://doi.org/10.31705/wcs.2023.63","url":null,"abstract":"In today's world, energy and human life are inextricably linked. Due to the scarcity of fossil fuels and rising prices, the world is shifting to renewable energy sources to acquire energy. The economic downturn and the government's inability to import fuel have exacerbated the energy crisis in the Sri Lankan context. Every day, prolonged power outages become a part of people's lives, which drives people to find alternative solutions. Even though solar PV systems are a popular renewable energy source in Sri Lanka, having an on-grid solar system has no advantages during power outages. Thus, Sri Lanka has an apparent demand for off-grid solar systems. Therefore, this study investigates the merits and demerits of utilising off-grid solar systems from key stakeholders' perspectives. Three key stakeholders were identified: government authorities, off-grid solar service provider companies and off-grid solar users. Twenty-five semi-structured interviews with key stakeholders were conducted after a thorough literature review. The collected interview data were analysed manually using content analysis. The study's findings revealed the significant merits of using off-grid solar systems in the Sri Lankan context as; the benefit of an uninterrupted power supply and reducing the national grid demand. The study revealed significant demerits: unavailability of proper regulations, capital-intensive investment, no return on investment and the lack of qualified people in the off-grid solar sector. The respective industry practitioners and stakeholders can use the knowledge gained from this study to promote and utilise future policy implications in the off-grid solar sector.","PeriodicalId":221447,"journal":{"name":"11th World Construction Symposium - 2023","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117220432","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}
The construction industry is crucial to the global economy, significantly contributing to local economies and their overall productivity. This is evident in India also, where the construction sector has substantially driven economic growth and development. However, as this industry grows, it poses a significant risk to environmental degradation. While sustainability in construction industry is often investigated from the perspective of design and planning phases, there is also growing recognition of the importance of addressing sustainability during construction phase. A quantitative approach was utilised to investigate the degree to which sustainable practices during construction phase (SPCPs) are implemented in India. Data was gathered from clients, contractors, and consultants, and 40 responses were obtained from 147 respondents contacted. The level of implementation of SPCPs was ranked, and analysis of variance (ANOVA) was conducted to test the significant difference in perceptions among the three groups of respondents. The results indicated that five most frequently implemented SPCPs are: (i) health and safety inspection and auditing; (ii) health and safety training and education; (iii) preservation of archaeological sites, vegetation, and trees; (iv) construction equipment/machinery handling and utilisation strategy and (v) quality management systems. Some of the other fundamental sustainable practices that are under-implemented are: (i) construction noise/ vibration reduction measures; (ii) preassembly or off-site fabrication; (iii) sustainability assessment and recognition program and (iv) stormwater and greywater management plan. Findings of this study can provide guidance to construction industry practitioners in identifying areas that require enhancements, thereby fostering a collaborative approach towards advancing sustainable development goals
{"title":"Sustainability practices implemented in the Indian construction industry: a focus of construction phase","authors":"N. Thounaojam, G. Devkar, B. Laishram","doi":"10.31705/wcs.2023.81","DOIUrl":"https://doi.org/10.31705/wcs.2023.81","url":null,"abstract":"The construction industry is crucial to the global economy, significantly contributing to local economies and their overall productivity. This is evident in India also, where the construction sector has substantially driven economic growth and development. However, as this industry grows, it poses a significant risk to environmental degradation. While sustainability in construction industry is often investigated from the perspective of design and planning phases, there is also growing recognition of the importance of addressing sustainability during construction phase. A quantitative approach was utilised to investigate the degree to which sustainable practices during construction phase (SPCPs) are implemented in India. Data was gathered from clients, contractors, and consultants, and 40 responses were obtained from 147 respondents contacted. The level of implementation of SPCPs was ranked, and analysis of variance (ANOVA) was conducted to test the significant difference in perceptions among the three groups of respondents. The results indicated that five most frequently implemented SPCPs are: (i) health and safety inspection and auditing; (ii) health and safety training and education; (iii) preservation of archaeological sites, vegetation, and trees; (iv) construction equipment/machinery handling and utilisation strategy and (v) quality management systems. Some of the other fundamental sustainable practices that are under-implemented are: (i) construction noise/ vibration reduction measures; (ii) preassembly or off-site fabrication; (iii) sustainability assessment and recognition program and (iv) stormwater and greywater management plan. Findings of this study can provide guidance to construction industry practitioners in identifying areas that require enhancements, thereby fostering a collaborative approach towards advancing sustainable development goals","PeriodicalId":221447,"journal":{"name":"11th World Construction Symposium - 2023","volume":"340 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117293595","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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