Journal of Engineering Project and Production Management最新文献

{"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}

{"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}

{"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}

{"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}

{"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}

{"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}

{"title":"Psychosocial Construction Work Environment and Wellbeing in the Viability of Indigenous Construction Firms","authors":"O. Oladimeji","doi":"10.2478/jeppm-2020-0021","DOIUrl":"https://doi.org/10.2478/jeppm-2020-0021","url":null,"abstract":"Abstract The strategic role of indigenous construction firms (ICFs) in the development of the construction industry better construction output and infrastructural development in developing countries cannot be overemphasized. These goals may not be achieved if firms’ psychosocial construction work environment and wellbeing (PCEW) are not appraised. To this end, this study identified and assessed factors relating to PCEW in the 37 factors influencing the viability and performance of construction firms obtained from the extant literature. A sample size of 65 staff of 31 ICFs out of a total survey of 177 staff of 59 ICFs that were awarded building contracts in selected institutions in Nigeria was accessed for this study. Respondents rated each factor on a five-point Likert scale of importance and mean scores were used to rank the factors after identifying factors that are related to ICFs’ PCEW. The study identifies 14 PCEW related factors out of the 37 factors influencing the viability of ICFs and six of the top ten very important factors influencing ICFs’ viability having high factor loading are PCEW related. The factors are quality of construction work and services, availability of skilled labour, employee satisfaction, and availability of artisans and craftsmen. Steady emphasis on factors influencing PCEW of construction workers amidst various factors influencing ICFs’ viability is necessary for a healthier construction work environment and wellbeing.","PeriodicalId":53274,"journal":{"name":"Journal of Engineering Project and Production Management","volume":"10 1","pages":"187 - 199"},"PeriodicalIF":0.0,"publicationDate":"2020-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46182335","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}

{"title":"Major Causes Assessment of Construction Delays","authors":"A. A. Umar, Rashid Khalfan Al Rizeiqi, A. Badr","doi":"10.2478/jeppm-2020-0020","DOIUrl":"https://doi.org/10.2478/jeppm-2020-0020","url":null,"abstract":"Abstract Delays on construction projects constitute a major source of concern due to its associated cost increases and loss of revenue. The Gulf Cooperation Council (GCC), of which Oman is a member, faces huge delays on their projects. Such delays in the GCC were among factors fingered in the collapse of the UK’s Carillion. Despite cultural similarities, substantial variability exists within the GCC construction sector which requires country-specific studies. The quest to understand delay causes results from the need to curtail wastes and adjust to the new regime of low commodity prices. There is a dearth of studies specific to the governorate of Muscat exploring the causes of delays and this study seeks to fill that gap. A structured survey questionnaire was administered at two independent events organized by the RICS and ICE in Muscat. The top causes of delays ranked using the Relative Importance Index (RII) include variation and changes in design, Poor site management and supervision, ineffective planning and scheduling, unclear and inadequate details in drawing, poor qualification of the contractors and technical staff, delay in material delivery, and shortage of labor. Contractors were found to be most likely to cause delays among the 6 categories of sources.","PeriodicalId":53274,"journal":{"name":"Journal of Engineering Project and Production Management","volume":"10 1","pages":"179 - 186"},"PeriodicalIF":0.0,"publicationDate":"2020-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45587198","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}

{"title":"Voice Assisted Key-In Building Quantities Estimation System","authors":"O. Olanrewaju, M. Sandanayake, Sunday Ajiboye Babarinde","doi":"10.2478/jeppm-2020-0014","DOIUrl":"https://doi.org/10.2478/jeppm-2020-0014","url":null,"abstract":"Abstract Voice recognition technology has been in existence over several decades but its application in the construction industry has been minimal. Despite the several advantages it offers, its application has been limited to smart building integration only. This study has made a significant contribution by integrating voice recognition technology into key-in building quantities estimation software. The Visual Basic programming language was used to design and code the interface of the voice recognition system and key-in estimating software model. The prototype model continues to have some challenges because it cannot work efficiently in a noisy work environment and there is limited range of vocabulary it can recognize. This paper seeks to challenge the stakeholders of the construction industry to maximize the benefits of voice recognition technology and integrate it into other construction tasks. In addition, future research can consider integrating building information modeling and voice recognition technology.","PeriodicalId":53274,"journal":{"name":"Journal of Engineering Project and Production Management","volume":"10 1","pages":"114 - 122"},"PeriodicalIF":0.0,"publicationDate":"2020-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45734738","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}

{"title":"Feasibility Assessment of Tilt-Up Construction in Commercial Buildings","authors":"Chipozya Tembo Silungwe, Festus C. Luwaya","doi":"10.2478/jeppm-2020-0016","DOIUrl":"https://doi.org/10.2478/jeppm-2020-0016","url":null,"abstract":"Abstract Construction projects are much appreciated by both client and contractor when completed on schedule and within budget so as to avoid cost overruns. The Zambian building sector normally experiences time and cost overruns. This study investigated the feasibility of using tilt-up construction in the construction of commercial building walls. The methodology used consisted of a literature review, a questionnaire survey and a scenario analysis consisting of a hypothetical 4900 square meter commercial building with a height of 8 meters. Sixty-six questionnaires were administered to design professionals operating in the Zambian building sector using simple random sampling and thirty-six were returned giving a response rate of 55%. The data were analyzed using descriptive statistics. Cost analysis was done on a hypothetical building as no contractor was found using tilt-up construction in the construction sector. The study established that tilt-up was, in fact, more expensive than the conventional methods (concrete blocks and in-situ reinforced concrete walls), but it was faster, hence, making it viable in respect to time and not cost in the Zambian construction industry (ZCI). Additionally, necessary expertise was available with the exception of a certified tilt-up practitioner and a sealant sub-contractor in cases where a sealant contractor is needed. The study has identified that currently in the Zambian building sector tilt-up construction can be used when time is more important than the cost. However, challenges such as site size (limited space), the unavailability of building regulation for tilt-up construction and the economic capacity of the client or capacity need to be addressed for enhancing the practical application of tilt-up construction in ZCI.","PeriodicalId":53274,"journal":{"name":"Journal of Engineering Project and Production Management","volume":"10 1","pages":"141 - 146"},"PeriodicalIF":0.0,"publicationDate":"2020-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45219946","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}