A. Yusuf, A. Opawole, N. A. Musa, D. S. Kadiri, E. Ebunoluwa
Abstract This study examines the capability improvement measures of the public sector client for enhancing the implementation of building information modeling (BIM) in construction project delivery. The study adopted a quantitative descriptive analysis based on primary data obtained through a structured questionnaire. A total of 198 valid questionnaires obtained from construction professionals within public sector organizations in Lagos State, Nigeria, provided primary quantitative data for the assessment. Data collected were analyzed using descriptive and inferential statistics. The findings indicated the measures to enhance the capacity of the public sector for BIM implementation including the following: team-based structure and recruitment of adequate number of staff (with mean score [MS] = 3.66), government support and involvement (MS = 3.64), government policies, adoption of process open to innovation, and investment in equipment and technology (MS = 3.60) had been considerably entrenched. However, measures that resulted in improved efficiency were limited to the following: reward system for performance (MS = 3.81), government policies, and education and training of staff (MS = 3.74), government support and involvement (MS = 3.73), and clear job description (MS = 3.71). Most of the measures with high level of impact were not necessarily those that are frequently used. On this basis, the public sector needs to differ from the status quo by adopting improvement measures that are appropriate for enhancing its capabilities for BIM in project delivery. The findings indicate implications that could enable the public sector to adjust and make necessary policies in a bid to improve BIM implementation in project delivery.
{"title":"Capability improvement measures of the public sector for implementation of building information modeling in construction projects","authors":"A. Yusuf, A. Opawole, N. A. Musa, D. S. Kadiri, E. Ebunoluwa","doi":"10.2478/otmcj-2022-0014","DOIUrl":"https://doi.org/10.2478/otmcj-2022-0014","url":null,"abstract":"Abstract This study examines the capability improvement measures of the public sector client for enhancing the implementation of building information modeling (BIM) in construction project delivery. The study adopted a quantitative descriptive analysis based on primary data obtained through a structured questionnaire. A total of 198 valid questionnaires obtained from construction professionals within public sector organizations in Lagos State, Nigeria, provided primary quantitative data for the assessment. Data collected were analyzed using descriptive and inferential statistics. The findings indicated the measures to enhance the capacity of the public sector for BIM implementation including the following: team-based structure and recruitment of adequate number of staff (with mean score [MS] = 3.66), government support and involvement (MS = 3.64), government policies, adoption of process open to innovation, and investment in equipment and technology (MS = 3.60) had been considerably entrenched. However, measures that resulted in improved efficiency were limited to the following: reward system for performance (MS = 3.81), government policies, and education and training of staff (MS = 3.74), government support and involvement (MS = 3.73), and clear job description (MS = 3.71). Most of the measures with high level of impact were not necessarily those that are frequently used. On this basis, the public sector needs to differ from the status quo by adopting improvement measures that are appropriate for enhancing its capabilities for BIM in project delivery. The findings indicate implications that could enable the public sector to adjust and make necessary policies in a bid to improve BIM implementation in project delivery.","PeriodicalId":42309,"journal":{"name":"Organization Technology and Management in Construction","volume":"14 1","pages":"2710 - 2730"},"PeriodicalIF":2.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42014066","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}
Abstract Given that the literature indicates a lack of cooperation and outdated supply chains in construction, which are based mainly on short-term relationships and coordination through price, hybrid organisations between major contractors and subcontractors in construction in Croatia were investigated. The study aimed to define the determinants of collaborative hybrid organisations in the construction industry of the Republic of Croatia, and to investigate the motives and obstacles to their emergence as well as their differences with respect to control variables. Determinants, motives and obstacles are defined by detailed secondary research of theoretical works, while the differences between them are determined by the results of variance analysis. The research indicates that construction companies do not organise their upstream parts of supply chains only on the authority and position of power, but also use other management mechanisms, especially collaboration based on trust.
{"title":"Determinants of collaborative hybrid organisations in the construction industry of the Republic of Croatia","authors":"Dinko Stanković Moćan","doi":"10.2478/otmcj-2022-0003","DOIUrl":"https://doi.org/10.2478/otmcj-2022-0003","url":null,"abstract":"Abstract Given that the literature indicates a lack of cooperation and outdated supply chains in construction, which are based mainly on short-term relationships and coordination through price, hybrid organisations between major contractors and subcontractors in construction in Croatia were investigated. The study aimed to define the determinants of collaborative hybrid organisations in the construction industry of the Republic of Croatia, and to investigate the motives and obstacles to their emergence as well as their differences with respect to control variables. Determinants, motives and obstacles are defined by detailed secondary research of theoretical works, while the differences between them are determined by the results of variance analysis. The research indicates that construction companies do not organise their upstream parts of supply chains only on the authority and position of power, but also use other management mechanisms, especially collaboration based on trust.","PeriodicalId":42309,"journal":{"name":"Organization Technology and Management in Construction","volume":"15 1","pages":"107 - 121"},"PeriodicalIF":2.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49444067","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}
Abstract Project processes are affected by risks in many ways, and this is particularly true in today's highly competitive world. Construction projects usually take much longer than typical projects in other sectors. In this sector, it is important to follow some kind of standardised risk management process. There is much literature on different approaches to project risk management, and this paper reviews the most prominent sources that suggest procedures that are widely used in practice. Nevertheless, standard risk management still faces some shortcomings, and professionals call for a more sophisticated solution. This research aims to expand the general risk management process based on the frameworks of the prestigious stand-ardisation institutions and associations (mainly on Project Management Institute's (PMI's) risk management standard considering the approaches of Institute of Risk Management (IRM), National Forum for Risk Management in the Public Sector (ALARM), Association of Insurance and Risk Managers (AIRMIC) and International Organization for Standardization (ISO), as well as Association for Project Management (APM)). The suggested two new processes are justified by in-depth interviews conducted with interviewees working on large and complex construction projects, and are supported by a thorough literature review. The novelty of the research is that these two processes added to the standard processes, namely, risk analysis verification and validation and risk plan experimentation. The research expectedly improves the risk management process in the construction sector and emphasises the need to clearly articulate and communicate the organisation's risk appetite and the necessity for risk management training to employees. Therefore, the research reconfirms the concept of project risk management by the standards, and justifies the proposed new phases.
{"title":"A construction–specific extension to a standard project risk management process","authors":"Dina Alfreahat, Z. Sebestyén","doi":"10.2478/otmcj-2022-0011","DOIUrl":"https://doi.org/10.2478/otmcj-2022-0011","url":null,"abstract":"Abstract Project processes are affected by risks in many ways, and this is particularly true in today's highly competitive world. Construction projects usually take much longer than typical projects in other sectors. In this sector, it is important to follow some kind of standardised risk management process. There is much literature on different approaches to project risk management, and this paper reviews the most prominent sources that suggest procedures that are widely used in practice. Nevertheless, standard risk management still faces some shortcomings, and professionals call for a more sophisticated solution. This research aims to expand the general risk management process based on the frameworks of the prestigious stand-ardisation institutions and associations (mainly on Project Management Institute's (PMI's) risk management standard considering the approaches of Institute of Risk Management (IRM), National Forum for Risk Management in the Public Sector (ALARM), Association of Insurance and Risk Managers (AIRMIC) and International Organization for Standardization (ISO), as well as Association for Project Management (APM)). The suggested two new processes are justified by in-depth interviews conducted with interviewees working on large and complex construction projects, and are supported by a thorough literature review. The novelty of the research is that these two processes added to the standard processes, namely, risk analysis verification and validation and risk plan experimentation. The research expectedly improves the risk management process in the construction sector and emphasises the need to clearly articulate and communicate the organisation's risk appetite and the necessity for risk management training to employees. Therefore, the research reconfirms the concept of project risk management by the standards, and justifies the proposed new phases.","PeriodicalId":42309,"journal":{"name":"Organization Technology and Management in Construction","volume":"14 1","pages":"2666 - 2674"},"PeriodicalIF":2.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49513923","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}
Abstract Facility management (FM) requires multidisciplinary activities, and thus has extensive information requirements. Much of that information is created during the design, construction, and commissioning phases of a project. Providing the owner of a facility with usable life cycle asset information after construction has been a challenge to the industry. Traditional methods of manually inputting data into FM systems are time consuming and error prone. Various automated approaches and workflows continue to be developed to respond to specific owner needs. This research developed a unique workflow that uses Dynamo within Revit to automatically extract asset management data from the model and export the data to a proprietary format required by the facility owner. The formatted spreadsheet allows for direct linking of the data to the owner's FM system, hence eliminating time wasted in manual data entry and avoiding missing any maintenance cycles that would result if the FM system is not populated with critical information in a timely manner. This article utilizes a case study approach to demonstrate this novel Dynamo workflow. The required case study asset data identified and captured include asset groups, their properties and attributes, and corresponding metadata. A basic three-dimensional representation of the facility and all its equipment are modeled in Revit and asset data are input to corresponding model elements. This article also describes the complexity of the owner's proprietary information needs and the resulting automated workflow that extracts and exports data from Revit into an Excel format that can directly link into the FM system.
{"title":"Linking life cycle BIM data to a facility management system using Revit Dynamo","authors":"W. Thabet, J. Lucas, Sai Srinivasan","doi":"10.2478/otmcj-2022-0001","DOIUrl":"https://doi.org/10.2478/otmcj-2022-0001","url":null,"abstract":"Abstract Facility management (FM) requires multidisciplinary activities, and thus has extensive information requirements. Much of that information is created during the design, construction, and commissioning phases of a project. Providing the owner of a facility with usable life cycle asset information after construction has been a challenge to the industry. Traditional methods of manually inputting data into FM systems are time consuming and error prone. Various automated approaches and workflows continue to be developed to respond to specific owner needs. This research developed a unique workflow that uses Dynamo within Revit to automatically extract asset management data from the model and export the data to a proprietary format required by the facility owner. The formatted spreadsheet allows for direct linking of the data to the owner's FM system, hence eliminating time wasted in manual data entry and avoiding missing any maintenance cycles that would result if the FM system is not populated with critical information in a timely manner. This article utilizes a case study approach to demonstrate this novel Dynamo workflow. The required case study asset data identified and captured include asset groups, their properties and attributes, and corresponding metadata. A basic three-dimensional representation of the facility and all its equipment are modeled in Revit and asset data are input to corresponding model elements. This article also describes the complexity of the owner's proprietary information needs and the resulting automated workflow that extracts and exports data from Revit into an Excel format that can directly link into the FM system.","PeriodicalId":42309,"journal":{"name":"Organization Technology and Management in Construction","volume":"14 1","pages":"2539 - 2558"},"PeriodicalIF":2.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44136982","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}
Abstract Introduction The current competitiveness in the business arena of the construction industry has forced players to improve and optimise, forcing them to adopt the iterating process of continuous improvement that ensures the adequate quality of projects, in addition to moderating the cost and time involved in their implementation, the three of which have collectively been recognised as the primary factors causing the client's approval or disfavour in relation to a project. Purpose The primary intention of the current study is to analyse the effects of total quality management (TQM) practices for construction projects and their impact on productivity, cost reduction, quality of service, customer satisfaction and Timeliness of Service by conceptualising a model using second-generation partial least squares (PLS) structural equation model (SEM) approach in Tamil Nadu. Design/Methodology The primary data have been gathered through a sample survey collected from 94 respondents from Chennai, Kanchipuram, Coimbatore, Trichy, Karur and Tirunelveli districts of Tamil Nadu through the questionnaire. The responses were collected from various professionals in the field, such as project managers, contractors, engineers, consultants and supervisors. Findings This study also confirmed a significant and positive relationship between TQM practices and the performance of construction projects. TQM factors such as Benchmarking (BM), Employee Involvement and Empowerment (EMPINV), Innovation (INNOV), Supplier Quality Management (SPQM) and Technical (TECHN) are significant in determining the project's outcome by 79.5%. Practical implications The study's finding is of utmost importance because it helps build strategies and policies for the construction industry in the global competitive scenario, in promoting credibility and in increasing customer satisfaction.
{"title":"Total quality management practices and its impact on Indian construction projects","authors":"C. Vijayabanu, S. Karthikeyan, P. Vijay Surya","doi":"10.2478/otmcj-2022-0013","DOIUrl":"https://doi.org/10.2478/otmcj-2022-0013","url":null,"abstract":"Abstract Introduction The current competitiveness in the business arena of the construction industry has forced players to improve and optimise, forcing them to adopt the iterating process of continuous improvement that ensures the adequate quality of projects, in addition to moderating the cost and time involved in their implementation, the three of which have collectively been recognised as the primary factors causing the client's approval or disfavour in relation to a project. Purpose The primary intention of the current study is to analyse the effects of total quality management (TQM) practices for construction projects and their impact on productivity, cost reduction, quality of service, customer satisfaction and Timeliness of Service by conceptualising a model using second-generation partial least squares (PLS) structural equation model (SEM) approach in Tamil Nadu. Design/Methodology The primary data have been gathered through a sample survey collected from 94 respondents from Chennai, Kanchipuram, Coimbatore, Trichy, Karur and Tirunelveli districts of Tamil Nadu through the questionnaire. The responses were collected from various professionals in the field, such as project managers, contractors, engineers, consultants and supervisors. Findings This study also confirmed a significant and positive relationship between TQM practices and the performance of construction projects. TQM factors such as Benchmarking (BM), Employee Involvement and Empowerment (EMPINV), Innovation (INNOV), Supplier Quality Management (SPQM) and Technical (TECHN) are significant in determining the project's outcome by 79.5%. Practical implications The study's finding is of utmost importance because it helps build strategies and policies for the construction industry in the global competitive scenario, in promoting credibility and in increasing customer satisfaction.","PeriodicalId":42309,"journal":{"name":"Organization Technology and Management in Construction","volume":"14 1","pages":"2697 - 2709"},"PeriodicalIF":2.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48617876","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}
Abstract The task of organisation is based on breaking up complex systems into a number of less complex subsystems where the interfaces are well-determined leading inevitably to hierarchical structures. Therewith, the principle need of precisely predefined targets regarding quality and time frames becomes necessary, which in turn enforces establishing controlling procedures. Meanwhile, it is well accepted that controlling processes are demanding resources and therewith form the cost of organisation. Rarely quantitatively regarded is, however, the need of having further resources ready to repair for detected quality deviations. This paper points out where the system-theoretical limits of control lie, based on a mathematical approach of delayed control where a second-order approximation leads to the introduction of terms of perseverance as well as of dissipative terms. On this background, delayed integral controlling meets the characteristics of a harmonic control system and also suffers it's confines determining the fundamentally limited reaction time. The focus of the article presented here is on the development of realistic scenarios of limited quality deviation situations and their relevance in the light of a fundamental criterion of stability derived from the differential equation of the harmonic control. In this context, we find evidence that partly self-determining concepts, such as e.g. maintained in lean construction, SCRUM and similar others, become favourable, if not superior, to hierarchical approaches.
{"title":"Manageability of complex organisational systems – system-theoretical confines of control","authors":"W. Eber","doi":"10.2478/otmcj-2022-0009","DOIUrl":"https://doi.org/10.2478/otmcj-2022-0009","url":null,"abstract":"Abstract The task of organisation is based on breaking up complex systems into a number of less complex subsystems where the interfaces are well-determined leading inevitably to hierarchical structures. Therewith, the principle need of precisely predefined targets regarding quality and time frames becomes necessary, which in turn enforces establishing controlling procedures. Meanwhile, it is well accepted that controlling processes are demanding resources and therewith form the cost of organisation. Rarely quantitatively regarded is, however, the need of having further resources ready to repair for detected quality deviations. This paper points out where the system-theoretical limits of control lie, based on a mathematical approach of delayed control where a second-order approximation leads to the introduction of terms of perseverance as well as of dissipative terms. On this background, delayed integral controlling meets the characteristics of a harmonic control system and also suffers it's confines determining the fundamentally limited reaction time. The focus of the article presented here is on the development of realistic scenarios of limited quality deviation situations and their relevance in the light of a fundamental criterion of stability derived from the differential equation of the harmonic control. In this context, we find evidence that partly self-determining concepts, such as e.g. maintained in lean construction, SCRUM and similar others, become favourable, if not superior, to hierarchical approaches.","PeriodicalId":42309,"journal":{"name":"Organization Technology and Management in Construction","volume":"14 1","pages":"2640 - 2655"},"PeriodicalIF":2.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49456739","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}
Abstract The aim of this paper was to compare the level of performance (success) of construction projects between selected countries based on the concept of iron triangle. Following this, the major construction delays, cost overruns and quality factors were identified through an in-depth review of previous research works conducted in Denmark, Nigeria and Gaza Strip. The aggregate impacts of these factors were computed and compared between these countries. The results show that in the case of Denmark, the aggregate impact of the factors responsible for delay, cost overrun and poor quality was found in the impact interval between [0.60–0.80], but in the case of Gaza Strip and Nigeria, the aggregate impacts were found in the impact interval between [0.80–1.0]. This shows that construction projects in Denmark are found to be performed better relative to Nigeria and Gaza Strip.
{"title":"A DOSE to compare the level of performance between construction projects","authors":"T. Alemu, M. S. Thakur","doi":"10.2478/otmcj-2022-0017","DOIUrl":"https://doi.org/10.2478/otmcj-2022-0017","url":null,"abstract":"Abstract The aim of this paper was to compare the level of performance (success) of construction projects between selected countries based on the concept of iron triangle. Following this, the major construction delays, cost overruns and quality factors were identified through an in-depth review of previous research works conducted in Denmark, Nigeria and Gaza Strip. The aggregate impacts of these factors were computed and compared between these countries. The results show that in the case of Denmark, the aggregate impact of the factors responsible for delay, cost overrun and poor quality was found in the impact interval between [0.60–0.80], but in the case of Gaza Strip and Nigeria, the aggregate impacts were found in the impact interval between [0.80–1.0]. This shows that construction projects in Denmark are found to be performed better relative to Nigeria and Gaza Strip.","PeriodicalId":42309,"journal":{"name":"Organization Technology and Management in Construction","volume":"14 1","pages":"2760 - 2768"},"PeriodicalIF":2.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44952958","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}
Abstract Communication risks and asymmetric information among project participants are often associated with poor performance in construction projects. Communication and coordination are prominent issues in recent research on construction management, with little actual theoretical foundation. The purpose of this study is to investigate the extent to which principal–agent (P–A) theory and its implications are used in construction management research. In the archives of the top seven construction management journals, 148 scientific papers mentioning P–A theory were found. The keywords were analysed to determine the connections between them. Network analysis (NA) of the interconnected keywords was used to illustrate the most common relations between P–A theory and construction management. The findings of this study indicate that the most important elements associated with P–A theory in construction management are contracts, governance, partnership, transaction costs, information systems, incentives, risk management, and trust. However, some keywords are often used without considering related theoretical concepts. This study introduces a new perspective on P–A theory research in the field of construction management.
{"title":"Network analysis of interconnections between theoretical concepts associated with principal–agent theory concerning construction projects","authors":"A. Cerić, I. Ivić","doi":"10.2478/otmcj-2021-0025","DOIUrl":"https://doi.org/10.2478/otmcj-2021-0025","url":null,"abstract":"Abstract Communication risks and asymmetric information among project participants are often associated with poor performance in construction projects. Communication and coordination are prominent issues in recent research on construction management, with little actual theoretical foundation. The purpose of this study is to investigate the extent to which principal–agent (P–A) theory and its implications are used in construction management research. In the archives of the top seven construction management journals, 148 scientific papers mentioning P–A theory were found. The keywords were analysed to determine the connections between them. Network analysis (NA) of the interconnected keywords was used to illustrate the most common relations between P–A theory and construction management. The findings of this study indicate that the most important elements associated with P–A theory in construction management are contracts, governance, partnership, transaction costs, information systems, incentives, risk management, and trust. However, some keywords are often used without considering related theoretical concepts. This study introduces a new perspective on P–A theory research in the field of construction management.","PeriodicalId":42309,"journal":{"name":"Organization Technology and Management in Construction","volume":"13 1","pages":"2450 - 2464"},"PeriodicalIF":2.1,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46585025","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}
Abstract Monitoring labor productivity and how to decrease construction costs are the key issues in the planning process of a construction project. The CONTEC automated system combined with statistical methods assists in predicting the amount of time required to complete construction works according to the specified number of deployed work crews, technological processes, and labor required for certain production in person-hours. This study applies statistical analyses and probability theories for plastering work, which represents a labor-intensive construction process. The goal of the research is to determine the probability of completion of the construction process based on monitoring the mean value of performance. By application of statistical analyses a decrease in the performance standard has been proved compared with the planned values given in the CONTEC database. The decrease in performance, which was also caused by the number of days with unfavorable climatic conditions and demonstrated by performing interval estimates based on the collection of statistical data, was later confirmed by a relative frequency test. The measures taken were in terms of establishing the required number of personnel capacities for complying with the construction schedule.
{"title":"Determination of construction process duration based on labor productivity estimation: A case study","authors":"D. Kubečková, S. Smugala","doi":"10.2478/otmcj-2021-0031","DOIUrl":"https://doi.org/10.2478/otmcj-2021-0031","url":null,"abstract":"Abstract Monitoring labor productivity and how to decrease construction costs are the key issues in the planning process of a construction project. The CONTEC automated system combined with statistical methods assists in predicting the amount of time required to complete construction works according to the specified number of deployed work crews, technological processes, and labor required for certain production in person-hours. This study applies statistical analyses and probability theories for plastering work, which represents a labor-intensive construction process. The goal of the research is to determine the probability of completion of the construction process based on monitoring the mean value of performance. By application of statistical analyses a decrease in the performance standard has been proved compared with the planned values given in the CONTEC database. The decrease in performance, which was also caused by the number of days with unfavorable climatic conditions and demonstrated by performing interval estimates based on the collection of statistical data, was later confirmed by a relative frequency test. The measures taken were in terms of establishing the required number of personnel capacities for complying with the construction schedule.","PeriodicalId":42309,"journal":{"name":"Organization Technology and Management in Construction","volume":"13 1","pages":"2521 - 2538"},"PeriodicalIF":2.1,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49294273","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}
Abstract Valuations of real estate are widely used for various purposes and it relied always upon the financial and other markets. Valuation methodology is based on the operation of the free market economy and the real estate properties. The issue of certified properties is relatively new in the field of real estate valuation and is not sufficiently explored. Certified buildings are preferred by major corporate tenants with international field of activity who often have ethical rules for sustainable development. Therefore, certified properties are attractive to international commercial real estate investors who have higher purchasing power and are willing to pay a higher purchase price. Sustainable property certification is an element affecting the market value of the property. The purpose of this presented research is to quantify the impact of property certification on the value of office properties in Prague and subsequently to determine the impact of sustainability certificates on the market value of the land by using basic valuation techniques. The outcome of the project could be used by real estate valuation experts as a guideline to consider the future project certification and its impact on the land market value.
{"title":"Added value of sites suitable for sustainable office development","authors":"J. Kupec","doi":"10.2478/otmcj-2021-0026","DOIUrl":"https://doi.org/10.2478/otmcj-2021-0026","url":null,"abstract":"Abstract Valuations of real estate are widely used for various purposes and it relied always upon the financial and other markets. Valuation methodology is based on the operation of the free market economy and the real estate properties. The issue of certified properties is relatively new in the field of real estate valuation and is not sufficiently explored. Certified buildings are preferred by major corporate tenants with international field of activity who often have ethical rules for sustainable development. Therefore, certified properties are attractive to international commercial real estate investors who have higher purchasing power and are willing to pay a higher purchase price. Sustainable property certification is an element affecting the market value of the property. The purpose of this presented research is to quantify the impact of property certification on the value of office properties in Prague and subsequently to determine the impact of sustainability certificates on the market value of the land by using basic valuation techniques. The outcome of the project could be used by real estate valuation experts as a guideline to consider the future project certification and its impact on the land market value.","PeriodicalId":42309,"journal":{"name":"Organization Technology and Management in Construction","volume":"13 1","pages":"2465 - 2471"},"PeriodicalIF":2.1,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43598034","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：