Abstract Stakeholder management (SM) is of utmost importance in ensuring timely project delivery, delivery within budget, to the right quality level and to client’s satisfaction. Private corporate organizations have limited resources and so could not afford project cost or time overrun and other issues that could impact project success. While studies are available that examined factors impacting stakeholder management in public building projects, there is a paucity of research on factors influencing stakeholder management in building projects procured by private corporate organizations; hence this study. The objective of the reported study is to assess the factors influencing SM in building projects procured by private corporate organizations in Southwestern Nigeria with a view to enhancing project delivery. The data for the study were collected using a structured questionnaire survey. Purposive sampling technique was used to select project managers (PMs) and client representatives (CRs) that were involved in the management of building projects procured by private corporate organizations between 2008 and 2017. A total of 106 questionnaires were received from PMs and CRs that responded to the questionnaire survey. The data collected were analysed using mean score (MS) analysis, Student’s t-test and factor analysis. The result shows that the most important factors influencing SM comprise of ‘maintaining good relationships with stakeholders’, ‘addressing stakeholders’ concerns and needs’ and ‘avenue for communicating project impacts’. The further result using factor analysis shows that the factors influencing SM could be categorized into six component groupings of - project relationship, information input, stakeholder estimation, decision-making, sustainable support and external project relationship awareness. The study concluded that project managers need to pay attention to the identified topranking factors in order to achieve improved project delivery.
{"title":"Factors Influencing Stakeholder Management in Building Projects Procured by Private Corporate Organisations","authors":"N. Olatunde, H. Odeyinka","doi":"10.2478/jeppm-2021-0002","DOIUrl":"https://doi.org/10.2478/jeppm-2021-0002","url":null,"abstract":"Abstract Stakeholder management (SM) is of utmost importance in ensuring timely project delivery, delivery within budget, to the right quality level and to client’s satisfaction. Private corporate organizations have limited resources and so could not afford project cost or time overrun and other issues that could impact project success. While studies are available that examined factors impacting stakeholder management in public building projects, there is a paucity of research on factors influencing stakeholder management in building projects procured by private corporate organizations; hence this study. The objective of the reported study is to assess the factors influencing SM in building projects procured by private corporate organizations in Southwestern Nigeria with a view to enhancing project delivery. The data for the study were collected using a structured questionnaire survey. Purposive sampling technique was used to select project managers (PMs) and client representatives (CRs) that were involved in the management of building projects procured by private corporate organizations between 2008 and 2017. A total of 106 questionnaires were received from PMs and CRs that responded to the questionnaire survey. The data collected were analysed using mean score (MS) analysis, Student’s t-test and factor analysis. The result shows that the most important factors influencing SM comprise of ‘maintaining good relationships with stakeholders’, ‘addressing stakeholders’ concerns and needs’ and ‘avenue for communicating project impacts’. The further result using factor analysis shows that the factors influencing SM could be categorized into six component groupings of - project relationship, information input, stakeholder estimation, decision-making, sustainable support and external project relationship awareness. The study concluded that project managers need to pay attention to the identified topranking factors in order to achieve improved project delivery.","PeriodicalId":53274,"journal":{"name":"Journal of Engineering Project and Production Management","volume":"11 1","pages":"18 - 9"},"PeriodicalIF":0.0,"publicationDate":"2020-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45899118","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 Information and Communication Technology advancement has made the method of practice across different industries and businesses record fundamental changes in various dimensions and levels. The construction industry is determined to measure up with other industries in this and has since embraced the use of computer software to perform most, if not all of its activities. It is generally known that this software is not cheap and they require special skill to use. This research study is aimed at developing a computerised template for material and labour schedules for some selected items of work in construction using Microsoft Excel. This is an inexpensive way of estimating to save cost while eliminating the traditional method. The study adopted a mixed research method that involved observation of labourers on-site and validation through a questionnaire survey. The personal observation was carried out and labour outputs were recorded which was used together with material constants in developing the bill of material and labour template. The template was validated by practising Quantity Surveyors for ongoing projects and an average of 92% accuracy was recorded. It was concluded that the template can enhance the accuracy of Quantity Surveyors’ estimate of materials and labour for construction projects.
{"title":"Bill of Material and Labour Template for Construction Information Management","authors":"O. Akinradewo, O. Awodele, O. Akinradewo","doi":"10.2478/jeppm-2021-0006","DOIUrl":"https://doi.org/10.2478/jeppm-2021-0006","url":null,"abstract":"Abstract Information and Communication Technology advancement has made the method of practice across different industries and businesses record fundamental changes in various dimensions and levels. The construction industry is determined to measure up with other industries in this and has since embraced the use of computer software to perform most, if not all of its activities. It is generally known that this software is not cheap and they require special skill to use. This research study is aimed at developing a computerised template for material and labour schedules for some selected items of work in construction using Microsoft Excel. This is an inexpensive way of estimating to save cost while eliminating the traditional method. The study adopted a mixed research method that involved observation of labourers on-site and validation through a questionnaire survey. The personal observation was carried out and labour outputs were recorded which was used together with material constants in developing the bill of material and labour template. The template was validated by practising Quantity Surveyors for ongoing projects and an average of 92% accuracy was recorded. It was concluded that the template can enhance the accuracy of Quantity Surveyors’ estimate of materials and labour for construction projects.","PeriodicalId":53274,"journal":{"name":"Journal of Engineering Project and Production Management","volume":"11 1","pages":"52 - 60"},"PeriodicalIF":0.0,"publicationDate":"2020-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69219520","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 In today’s world, uncertainty abounds. It is therefore incumbent on managers to take decisions using unbiased considerations in dealing with organizational risks. Often, risk decisions are replete with assumptions and biases, leading to incorrect decisions. Leaders who apply emotional intelligence (EI) skills are better poised to challenge internal biases and assumptions to improve decision-making, but limited empirical evidence exists that accounts for the nexus between EI, leadership styles and risk perceptions of managers. The purpose of the paper was to explore the relevance of the theory of EI in risk-based decision-making, while comparing various leadership styles. The research adopted a questionnaire survey administered to 173 employed individuals. The research hypotheses analyzed the mediating roles of EI and leadership styles in risk perceptions using ‘t’ statistic and where applicable, Chi-square testing. The results of the analysis confirmed the role of EI in filtering deleterious internal biases and confirmed EI’s presence as a success factor in leadership and decision-making. Transformational leaders are, however, more emotionally intelligent and less biased. These attributes allow for the generation of a suitable risk attitude and enhance risk-intelligent decisions as compared to transactional leaders. This study, while being descriptive, is exploratory in nature and opens pathways for further targeted research based on specific EI abilities or traits and various situational risk attitudes.
{"title":"Effect of Emotional Intelligence and Leadership Styles on Risk Intelligent Decision Making and Risk Management","authors":"Jayet Moon","doi":"10.2478/jeppm-2021-0008","DOIUrl":"https://doi.org/10.2478/jeppm-2021-0008","url":null,"abstract":"Abstract In today’s world, uncertainty abounds. It is therefore incumbent on managers to take decisions using unbiased considerations in dealing with organizational risks. Often, risk decisions are replete with assumptions and biases, leading to incorrect decisions. Leaders who apply emotional intelligence (EI) skills are better poised to challenge internal biases and assumptions to improve decision-making, but limited empirical evidence exists that accounts for the nexus between EI, leadership styles and risk perceptions of managers. The purpose of the paper was to explore the relevance of the theory of EI in risk-based decision-making, while comparing various leadership styles. The research adopted a questionnaire survey administered to 173 employed individuals. The research hypotheses analyzed the mediating roles of EI and leadership styles in risk perceptions using ‘t’ statistic and where applicable, Chi-square testing. The results of the analysis confirmed the role of EI in filtering deleterious internal biases and confirmed EI’s presence as a success factor in leadership and decision-making. Transformational leaders are, however, more emotionally intelligent and less biased. These attributes allow for the generation of a suitable risk attitude and enhance risk-intelligent decisions as compared to transactional leaders. This study, while being descriptive, is exploratory in nature and opens pathways for further targeted research based on specific EI abilities or traits and various situational risk attitudes.","PeriodicalId":53274,"journal":{"name":"Journal of Engineering Project and Production Management","volume":"11 1","pages":"71 - 81"},"PeriodicalIF":0.0,"publicationDate":"2020-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45139961","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 construction industry is prone to conflicts and disputes due to complexity, competitive environment, and complicated project documents. In this complex environment, members from various professions, each has their goals and desires to secure the most of his own benefits, work together to build a structure. The objectives of this study were to investigate the frequency, causes, and remedies of disputes in the Central Province of Saudi Arabia. The required data were collected, through a questionnaire survey, from 130 contractors and 54 owners located in the Central Province. This study reveals that disputes in the Saudi construction industry are inevitable with a frequency of occurrence exceeds two disputes per month. Project documents, owners, and contractors to some extent are the sources for such disputes. Project documents are poorly prepared with inaccurate specifications, ambiguity in contract wording, contradictions between project documents, unrealistic project duration, the inaccurate bell of quantities (BOQ), and weakness in contract language. Owners cause great disputes through sizable variation orders exceeding allowable limits, changing item descriptions and quantities in BOQ, interfering in the execution of the contract, and delaying responses to requested information/approvals. Contractors cause disputes through poor contract administration. Contractors follow a combined strategy (mitigating disputes and holding only the disputed work area only) and owners either mitigate disputes or hold disputed scopes. Government owners mostly mitigating disputes and, conversely, private owners hold the disputed scope and continue with the rest of the project. This study is believed to contribute to the current body of knowledge in disputes and contractors and owners by providing effective mitigation techniques that will assist them in minimizing the negative impacts of disputes.
{"title":"Disputes in Construction Industry: Owners and Contractors’ Views on Causes and Remedies","authors":"A. Shash, S. I. Habash","doi":"10.2478/jeppm-2021-0005","DOIUrl":"https://doi.org/10.2478/jeppm-2021-0005","url":null,"abstract":"Abstract The construction industry is prone to conflicts and disputes due to complexity, competitive environment, and complicated project documents. In this complex environment, members from various professions, each has their goals and desires to secure the most of his own benefits, work together to build a structure. The objectives of this study were to investigate the frequency, causes, and remedies of disputes in the Central Province of Saudi Arabia. The required data were collected, through a questionnaire survey, from 130 contractors and 54 owners located in the Central Province. This study reveals that disputes in the Saudi construction industry are inevitable with a frequency of occurrence exceeds two disputes per month. Project documents, owners, and contractors to some extent are the sources for such disputes. Project documents are poorly prepared with inaccurate specifications, ambiguity in contract wording, contradictions between project documents, unrealistic project duration, the inaccurate bell of quantities (BOQ), and weakness in contract language. Owners cause great disputes through sizable variation orders exceeding allowable limits, changing item descriptions and quantities in BOQ, interfering in the execution of the contract, and delaying responses to requested information/approvals. Contractors cause disputes through poor contract administration. Contractors follow a combined strategy (mitigating disputes and holding only the disputed work area only) and owners either mitigate disputes or hold disputed scopes. Government owners mostly mitigating disputes and, conversely, private owners hold the disputed scope and continue with the rest of the project. This study is believed to contribute to the current body of knowledge in disputes and contractors and owners by providing effective mitigation techniques that will assist them in minimizing the negative impacts of disputes.","PeriodicalId":53274,"journal":{"name":"Journal of Engineering Project and Production Management","volume":"11 1","pages":"37 - 51"},"PeriodicalIF":0.0,"publicationDate":"2020-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44487407","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 Accidents are common problems on construction sites globally. The occurrence of these accidents usually leads to loss of time and productivity of site personnel, payments for treatment of the injured and burial expenses for the dead. Previous studies identified poor communication of information on Health and Safety as one of the major causes of accidents on construction sites. This study examined and analyzed the strategies for communication. Mean and standard deviations were used to analyze the strategies. The opinions of supervisors and operatives were tested through an independent t-test and Spearman’s rank correlation. Findings revealed project briefings, operating procedures, and safety manuals as the most frequently used communication strategies. No significant differences exist between the two groups of respondents in their rankings. The correlation coefficient revealed a positive relationship. In other words, respondents concurred in their opinions regarding these communication strategies. This paper, therefore, recommends the adoption of significant strategies identified in this study. In addition, future research can be conducted in other countries in order to explore the research area globally.
{"title":"Strategies for Communicating Health and Safety Information on Construction","authors":"R. T. Adebiyi, A. Rasheed","doi":"10.2478/jeppm-2021-0001","DOIUrl":"https://doi.org/10.2478/jeppm-2021-0001","url":null,"abstract":"Abstract Accidents are common problems on construction sites globally. The occurrence of these accidents usually leads to loss of time and productivity of site personnel, payments for treatment of the injured and burial expenses for the dead. Previous studies identified poor communication of information on Health and Safety as one of the major causes of accidents on construction sites. This study examined and analyzed the strategies for communication. Mean and standard deviations were used to analyze the strategies. The opinions of supervisors and operatives were tested through an independent t-test and Spearman’s rank correlation. Findings revealed project briefings, operating procedures, and safety manuals as the most frequently used communication strategies. No significant differences exist between the two groups of respondents in their rankings. The correlation coefficient revealed a positive relationship. In other words, respondents concurred in their opinions regarding these communication strategies. This paper, therefore, recommends the adoption of significant strategies identified in this study. In addition, future research can be conducted in other countries in order to explore the research area globally.","PeriodicalId":53274,"journal":{"name":"Journal of Engineering Project and Production Management","volume":"11 1","pages":"1 - 8"},"PeriodicalIF":0.0,"publicationDate":"2020-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49595183","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 A construction contract is a mechanism to bind a project owner and a contractor in a legal agreement to construct a project against a designated monitory consideration. However, projects are usually assembled over a long period with high uncertainty and complexity. Under such a dynamic business transaction, current static contracts fail to arrange for an appropriate and stable transaction. This paper reveals, through a questionnaire survey that was sent to all grade1 and 2 contractors and all owners in Riyadh-Saudi Arabia, the most common construction contracts in Saudi Arabia and the use, causes and benefits of contract conversion. The lump sum and the unit price are the most dominant type of contracts. Owners who select the former convert them during construction to unit price contracts leading to considerable benefits to contract parties including successful project completion with negligible disputes and better relationship. Owners are advised to include a clause in the construction contract to give them the privilege, not the obligation to convert the contract from one type to another.
{"title":"Construction Contract Conversion: An Approach to Resolve Disputes","authors":"A. Shash, S. I. Habash","doi":"10.2478/jeppm-2020-0018","DOIUrl":"https://doi.org/10.2478/jeppm-2020-0018","url":null,"abstract":"Abstract A construction contract is a mechanism to bind a project owner and a contractor in a legal agreement to construct a project against a designated monitory consideration. However, projects are usually assembled over a long period with high uncertainty and complexity. Under such a dynamic business transaction, current static contracts fail to arrange for an appropriate and stable transaction. This paper reveals, through a questionnaire survey that was sent to all grade1 and 2 contractors and all owners in Riyadh-Saudi Arabia, the most common construction contracts in Saudi Arabia and the use, causes and benefits of contract conversion. The lump sum and the unit price are the most dominant type of contracts. Owners who select the former convert them during construction to unit price contracts leading to considerable benefits to contract parties including successful project completion with negligible disputes and better relationship. Owners are advised to include a clause in the construction contract to give them the privilege, not the obligation to convert the contract from one type to another.","PeriodicalId":53274,"journal":{"name":"Journal of Engineering Project and Production Management","volume":"10 1","pages":"162 - 169"},"PeriodicalIF":0.0,"publicationDate":"2020-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44834412","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}
Panagiota Ralli, A. Panas, J. Pantouvakis, Dimitrios Karagiannakidis
Abstract Learning curves in construction operations analysis is deemed as one of the main factors that determine the variation of on-site productivity and is always taken into account during the planning and estimation stage. This research attempts the assessment of learning curve models’ suitability for the effective analysis of the learning phenomenon for construction operations that are fairly complicated concerning a floating caisson fabrication process for a large-scale marine project, using productivity data. This paper investigates the role of published learning curve models (i.e. Straightline or Wright; Stanford “B”; Cubic; Piecewise or Stepwise; Exponential) by comparing their outcomes through the use of both unit and cumulative productivity data. There are two main research objectives: first, the model best fitting historical productivity data of construction activities that have been completed are investigated, while secondly, an attempt is made to determine which model better predicts future performance. The less actual construction data deviate from each model’s yielded results, the better their suitability. In the case of unit data, the cubic model fits better historical data, while in the case of future predictions, the Stanford “B” model provides better results. Respectively, the Cubic model yields better results when using cumulative data on historical data and the Straight-line model predicts in a more reliable fashion future performance Possible extensions could be developed in the area of future performance predictions, by adopting different data representation techniques (e.g. moving/exponential weighted average) or by including other (non-classic) learning curve models (e.g. DeJong, Knecht, hyperbolic models).
{"title":"Investigation and Comparative Analysis of Learning Curve Models on Construction Productivity: The Case of Caisson Fabrication Process","authors":"Panagiota Ralli, A. Panas, J. Pantouvakis, Dimitrios Karagiannakidis","doi":"10.2478/jeppm-2020-0024","DOIUrl":"https://doi.org/10.2478/jeppm-2020-0024","url":null,"abstract":"Abstract Learning curves in construction operations analysis is deemed as one of the main factors that determine the variation of on-site productivity and is always taken into account during the planning and estimation stage. This research attempts the assessment of learning curve models’ suitability for the effective analysis of the learning phenomenon for construction operations that are fairly complicated concerning a floating caisson fabrication process for a large-scale marine project, using productivity data. This paper investigates the role of published learning curve models (i.e. Straightline or Wright; Stanford “B”; Cubic; Piecewise or Stepwise; Exponential) by comparing their outcomes through the use of both unit and cumulative productivity data. There are two main research objectives: first, the model best fitting historical productivity data of construction activities that have been completed are investigated, while secondly, an attempt is made to determine which model better predicts future performance. The less actual construction data deviate from each model’s yielded results, the better their suitability. In the case of unit data, the cubic model fits better historical data, while in the case of future predictions, the Stanford “B” model provides better results. Respectively, the Cubic model yields better results when using cumulative data on historical data and the Straight-line model predicts in a more reliable fashion future performance Possible extensions could be developed in the area of future performance predictions, by adopting different data representation techniques (e.g. moving/exponential weighted average) or by including other (non-classic) learning curve models (e.g. DeJong, Knecht, hyperbolic models).","PeriodicalId":53274,"journal":{"name":"Journal of Engineering Project and Production Management","volume":"10 1","pages":"219 - 230"},"PeriodicalIF":0.0,"publicationDate":"2020-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46112557","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}
F. Santos, Livia B. Agostinho, L. Araújo, L. A. Aidar, Ana Beatriz Souza Piña, M. Carvalho
Abstract This paper aims to quantify the labor productivity improvement reached by the implementation of a masonry wall project design to guide field construction. A masonry wall project design is an instrument of rationalization, developed to specify the layout and steps of a masonry walls execution. The methodology is of quantitative nature and involves a practical case. The work of an enterprise in Goiânia (Brazil) was tracked by the collection of productivity data, firstly of a crew that didn’t have access to a masonry wall project design, and then of a crew that had access to the project. The evaluation of the productivity improvement was processed by means of statistical analysis, such as location and dispersion measures, average and variance, T-test, and F-value. Hypothesis tests were also performed to prove that the changes in productivity were caused by the implementation of the masonry project. The results showed that the project deployment optimized the production process in the field. There was a 26% increase in the team average productivity with access to the project design according to the hypothesis tests. The main contribution of this work is to present the beneficial impact of a masonry wall project design tailored for field construction, which allows a formal and rational approach to a heavily artisanal technique.
{"title":"Labor Productivity Improvement Obtained by Masonry Walls Project Design Implementation","authors":"F. Santos, Livia B. Agostinho, L. Araújo, L. A. Aidar, Ana Beatriz Souza Piña, M. Carvalho","doi":"10.2478/jeppm-2020-0022","DOIUrl":"https://doi.org/10.2478/jeppm-2020-0022","url":null,"abstract":"Abstract This paper aims to quantify the labor productivity improvement reached by the implementation of a masonry wall project design to guide field construction. A masonry wall project design is an instrument of rationalization, developed to specify the layout and steps of a masonry walls execution. The methodology is of quantitative nature and involves a practical case. The work of an enterprise in Goiânia (Brazil) was tracked by the collection of productivity data, firstly of a crew that didn’t have access to a masonry wall project design, and then of a crew that had access to the project. The evaluation of the productivity improvement was processed by means of statistical analysis, such as location and dispersion measures, average and variance, T-test, and F-value. Hypothesis tests were also performed to prove that the changes in productivity were caused by the implementation of the masonry project. The results showed that the project deployment optimized the production process in the field. There was a 26% increase in the team average productivity with access to the project design according to the hypothesis tests. The main contribution of this work is to present the beneficial impact of a masonry wall project design tailored for field construction, which allows a formal and rational approach to a heavily artisanal technique.","PeriodicalId":53274,"journal":{"name":"Journal of Engineering Project and Production Management","volume":"10 1","pages":"200 - 210"},"PeriodicalIF":0.0,"publicationDate":"2020-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41476659","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 Crowded large space buildings are today becoming highly desirable facilities for communities, towns, and cities. Due to stricter health, safety requirements, and environmental effects, such buildings are of greater interest for research. The buildings are used for a variety of functions, including sporting, entertainment, and religious events. The Holy Mosque in Makkah Saudi Arabia is an excellent example of a crowded large space building with a maximum capacity reaching up to 2 million users, especially at the Hajj and Ramadan periods. Quite often, designer and facility managers of crowded large space buildings pay keen attention to normative and substantive (objective) safety, but research shows that perceived (subjective) safety which should also be important, is clear overlooked. To prove the significance of perceived safety, a theory has been adopted, which states that a reduction in perceived safety (PS) will negatively affect the user behaviour (UB) resulting in the occurrence of a disaster in crowded large size buildings. Initial research undertaken by the authors have identified 10 key factors affecting subjective safety in crowded large space buildings, this stage of the study is an empirical study to aimed at establishing how significant each factor affects PS and the effect of perceived safety on the UB in such types of buildings. The Holy Mosque was used as a case study. The research adopted the quantitative research methodology by collecting primary data using a group-administered questionnaire in electronic devices such as iPad from more than 1,940 Hajj pilgrims coming from 62 countries. This was analysed by SPSS and AMOS 22 for confirmatory factor analysis (CFA) and structural equation modeling (SEM) to test the interrelationships between the 10 identified factors and PS or between PS and UB through several hypotheses. The research has demonstrated that there is a significant influence on PS by most of the established factors and that PS has a significant influence on the behaviour of pilgrims in the Holy Mosque.
{"title":"Health and Safety in Crowded Large Size Buildings: The Effect of Perceived Safety on User Behaviour in the Holy Mosque","authors":"K. Gidado, Mohammed Alkhadim","doi":"10.2478/jeppm-2020-0019","DOIUrl":"https://doi.org/10.2478/jeppm-2020-0019","url":null,"abstract":"Abstract Crowded large space buildings are today becoming highly desirable facilities for communities, towns, and cities. Due to stricter health, safety requirements, and environmental effects, such buildings are of greater interest for research. The buildings are used for a variety of functions, including sporting, entertainment, and religious events. The Holy Mosque in Makkah Saudi Arabia is an excellent example of a crowded large space building with a maximum capacity reaching up to 2 million users, especially at the Hajj and Ramadan periods. Quite often, designer and facility managers of crowded large space buildings pay keen attention to normative and substantive (objective) safety, but research shows that perceived (subjective) safety which should also be important, is clear overlooked. To prove the significance of perceived safety, a theory has been adopted, which states that a reduction in perceived safety (PS) will negatively affect the user behaviour (UB) resulting in the occurrence of a disaster in crowded large size buildings. Initial research undertaken by the authors have identified 10 key factors affecting subjective safety in crowded large space buildings, this stage of the study is an empirical study to aimed at establishing how significant each factor affects PS and the effect of perceived safety on the UB in such types of buildings. The Holy Mosque was used as a case study. The research adopted the quantitative research methodology by collecting primary data using a group-administered questionnaire in electronic devices such as iPad from more than 1,940 Hajj pilgrims coming from 62 countries. This was analysed by SPSS and AMOS 22 for confirmatory factor analysis (CFA) and structural equation modeling (SEM) to test the interrelationships between the 10 identified factors and PS or between PS and UB through several hypotheses. The research has demonstrated that there is a significant influence on PS by most of the established factors and that PS has a significant influence on the behaviour of pilgrims in the Holy Mosque.","PeriodicalId":53274,"journal":{"name":"Journal of Engineering Project and Production Management","volume":"10 1","pages":"170 - 178"},"PeriodicalIF":0.0,"publicationDate":"2020-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42634893","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}
Leopold Mbereyaho, Line Nzayisenga, Ernest Tuyizere, F. Hagenimana
Abstract Worldwide, the medium density fiberboard (MDF) materials have been extensively used for furniture as well as a normal building material. The MDF production is based on wood materials that are obtained from the tree cutting, and this process may conduct to gradual deforestation. Different works have shown the advantages of using other renewable biomass sources for MDF manufacturing. This study aimed at assessing the potential of using the African couchgrass, as one of worldwide available grass, and which has been one of the most worrying weeds for agriculture areas. The test with the manufactured MDF checked such material properties like density, moisture content, water absorption, and thickness swelling. The established results were 727.143 kg/m3, 5.81%, 9.18%, and 7.6% respectively. All those results are in the range of standard values recommended by ASTM D1037, and they give optimism for the application of couchgrass in the manufacturing of MDF. This new material was planned to be used as a partition component. Therefore, further studies should evaluate other important properties, like fire and sound resistance, while a proposal for potential replacement of the used industrial wood glue is also welcome.
{"title":"Application of African Couchgrass in Manufacturing of Medium Density Fiberboard","authors":"Leopold Mbereyaho, Line Nzayisenga, Ernest Tuyizere, F. Hagenimana","doi":"10.2478/jeppm-2020-0023","DOIUrl":"https://doi.org/10.2478/jeppm-2020-0023","url":null,"abstract":"Abstract Worldwide, the medium density fiberboard (MDF) materials have been extensively used for furniture as well as a normal building material. The MDF production is based on wood materials that are obtained from the tree cutting, and this process may conduct to gradual deforestation. Different works have shown the advantages of using other renewable biomass sources for MDF manufacturing. This study aimed at assessing the potential of using the African couchgrass, as one of worldwide available grass, and which has been one of the most worrying weeds for agriculture areas. The test with the manufactured MDF checked such material properties like density, moisture content, water absorption, and thickness swelling. The established results were 727.143 kg/m3, 5.81%, 9.18%, and 7.6% respectively. All those results are in the range of standard values recommended by ASTM D1037, and they give optimism for the application of couchgrass in the manufacturing of MDF. This new material was planned to be used as a partition component. Therefore, further studies should evaluate other important properties, like fire and sound resistance, while a proposal for potential replacement of the used industrial wood glue is also welcome.","PeriodicalId":53274,"journal":{"name":"Journal of Engineering Project and Production Management","volume":"10 1","pages":"211 - 218"},"PeriodicalIF":0.0,"publicationDate":"2020-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45624140","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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