Modular and Offsite Construction (MOC) Summit Proceedings最新文献

{"title":"Development of decision-making tool for construction method selection: choosing and optimizing offsite construction","authors":"Emna Attouri, Z. Lafhaj, Laure Ducoulombier, Bruno Linéatte","doi":"10.29173/mocs261","DOIUrl":"https://doi.org/10.29173/mocs261","url":null,"abstract":"Offsite construction is considered as a possible solution for addressing time, quality and cost concerns associated with traditional construction method. Successful implementation of these methods on a particular project requires systematic analysis and early decision making based on specific factors of the project. There is a lack of an efficient systematic approach that can match the changing needs, deal with the growing complexity of building projects and take into consideration recently developed innovations, technologies and regulations. The objective of this study is the development of an early-phase decision tool to support construction project teams in selecting construction methods. This paper proposes a multi-level decision framework. The first level conducts a feasibility study and evaluates the applicability of offsite construction. The second level proposes an integrated approach for the decision-making problem that combines the Analytical Hierarchy Process (AHP) and the Preference Ranking Organization Method for Enrichment Evaluations (PROMETHEE). The combination of both approaches enables a careful evaluation of different construction methods and scenarios for the same project. A computerized tool is developed and tested on a case study to help a project team in the decision-making process.","PeriodicalId":422911,"journal":{"name":"Modular and Offsite Construction (MOC) Summit Proceedings","volume":"410 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116670326","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":"Decision factors for the feasibility study of developing a prefabrication plant","authors":"Monika Patel, SeyedReza RazaviAlavi","doi":"10.29173/mocs279","DOIUrl":"https://doi.org/10.29173/mocs279","url":null,"abstract":"A feasibility study is one of the key phases for developing a prefabrication plant, which requires an analysis of many influencing factors. This research aims to identify the main decision factors for the feasibility study of developing a prefabrication plant. To this end, a thorough literature review and semi-structured interviews with the subject matter experts (SMEs) from different countries were conducted. Analyzing the findings, this study identified 35 decision factors for the feasibility study, such as upfront costs, operation and maintenance costs, market demands, government incentives, design flexibility, plant location, logistics management and costs, and technological constraints. The results of this study will help the industry practitioners, who are seeking to develop prefabrication plants, in their decision-making process during the feasibility study phase.","PeriodicalId":422911,"journal":{"name":"Modular and Offsite Construction (MOC) Summit Proceedings","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116745766","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":"Offsite Construction education adoption in Civil Engineering undergraduate curriculum: analysis and proposal","authors":"F. Silva, Reymard S. S. Melo","doi":"10.29173/mocs267","DOIUrl":"https://doi.org/10.29173/mocs267","url":null,"abstract":"Offsite construction (OSC) is not new globally yet is still not widespread in Civil Engineering (CE) programs. This study proposes strategies for implementing OSC education in a CE undergraduate program curriculum. The research method used was the exploratory field study. Data were collected from three online questionnaires sent to interested parties: OSC industry professionals, faculty members, and final-year students. Each questionnaire sought to answer a specific objective of this study: to identify the design and onsite assembly competencies demanded by the industry, identify the interfaces between OSC and the CE program curriculum and determine the level of confidence of final-year students in applying OSC competencies. The collected data analysis was qualitative and generated from a crossing of the data from the three questionnaires, which supported the proposition of hypotheses for the insertion of OSC teaching by identifying the needs, deficiencies, and difficulties the three interested parties presented. Findings suggest that the OSC competencies most demanded by the industry are about knowing how to detail the interfaces between the components and the parts of the construction site, guarantee the assembly of elements within the deadlines, or learning how to take safety measures against accidents during the construction site. Data also suggest that students are interested in the subject but graduate with little confidence in applying most of the design and onsite assembly competencies demanded by the industry. One of the few exceptions is the knowledge to take safety measures against accidents on the job site. As a result, two hypotheses were generated to adopt OSC teaching in a Civil Engineering program.","PeriodicalId":422911,"journal":{"name":"Modular and Offsite Construction (MOC) Summit Proceedings","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114810593","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":"A proposed conceptual framework for Computational Design Sustainability in Industrialized Building","authors":"Sahar Soltani, V. Bunster, Duncan W. Maxwell","doi":"10.29173/mocs258","DOIUrl":"https://doi.org/10.29173/mocs258","url":null,"abstract":"The construction industry has benefited from the recent methodological advancements in Computational Design (CD) and its associated technological developments. However, the multifaceted challenges faced by the construction industry have limited its capacity to achieve global sustainability goals. In this context, Industrialized Building (IB) has opened new avenues to take advantage of technology while promoting the incorporation of sustainability principles to mainstream construction problems. Despite its great potential, the literature in this area is fragmented, and the relationship between various aspects of these topics is not fully understood. This paper aims to bring awareness to the potential integration of IB and CD in promoting sustainability, thereby advancing the understanding of the topic by proposing this integration for future investigations and unravelling their relationships and underpinning ideas. The critical discussion presented in this paper proposes a common ground on which to build new knowledge in seeking to disclose conceptual patterns and links instead of specific causal mechanisms. We propose that this integration paves the way for creating a trade-off structure to manage these multifaceted and complex factors through \"satisficing\" – finding the satisfactory solutions rather than the optimized ones – the design, operation and delivery of a building project (and its construction value chain) in a more sustainable way.","PeriodicalId":422911,"journal":{"name":"Modular and Offsite Construction (MOC) Summit Proceedings","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132867528","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":"Front matter, 2022 Proceedings of the Modular and Offsite Construction Summit","authors":"M. Al-Hussein","doi":"10.29173/mocs288","DOIUrl":"https://doi.org/10.29173/mocs288","url":null,"abstract":"Proceedings of the 2022 Modular and Offsite Construction (MOC) SummitEdmonton, Alberta, CanadaJuly 27 - 29, 2022 \u0000Editor(s): Dr. Mohamed Al-Hussein, PhD, University of Alberta© University of Alberta Library, Edmonton, CanadaISSN 2562-5438","PeriodicalId":422911,"journal":{"name":"Modular and Offsite Construction (MOC) Summit Proceedings","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116040285","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":"VDC management in the industrialization process using prefabricated reinforcement cages. Case Study: Ovalo Monitor Bridge","authors":"Alejandro Palpan, Sandra Vega, F. Quiroz, Mark Vicuña, Rodrigo Tuesta, A. A. Del Savio","doi":"10.29173/mocs285","DOIUrl":"https://doi.org/10.29173/mocs285","url":null,"abstract":"Reworks and delays in production processes are commonly found in construction projects associated with a low level of industrialization and a lack of design constructability. To promote industrialization, improve project constructability, and reduce the execution time, we implemented the Virtual Design and Construction (VDC) methodology. An industrialization strategy was established using a prefabricated reinforcement cages system (PRC) elements in an 870-meters bridge construction project in Lima, Peru. The objective was to improve the project buildability with high industrialization of the steel rebar works. We replaced the traditional on-site cutting and bending steel reinforcement processes with an industrial process that integrates construction management with the supply chain through Building Information Model (BIM). As a result, the level of industrialization of the PRC elements of the bridge substructure and superstructure reached 85% and 40%, respectively, aligned with a 16% execution time reduction of the project.","PeriodicalId":422911,"journal":{"name":"Modular and Offsite Construction (MOC) Summit Proceedings","volume":"17 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114020377","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":"Carbon emissions comparison in modular and site-built residential construction","authors":"M. Kouhirostami, A. Chini","doi":"10.29173/mocs287","DOIUrl":"https://doi.org/10.29173/mocs287","url":null,"abstract":"The construction industry has significant environmental impacts by consuming natural resources, emitting greenhouse gas (GHG), and generating wastes. Hence, lowering the environmental impacts of residential buildings deserve serious attention. Over the past decades, Modular construction has gained popularity as an address to that problem due to its advantages: lower cost, lower waste, higher productivity, faster construction time, and lower environmental impacts. This prefabrication technique also provides mass production specifically to address the housing crisis. In addition, lower carbon emission of modular construction makes it even more popular in residential sector. This study aims to review literature on environmental impacts of modular residential construction and their comparison with equivalent site-built homes using the life cycle assessment method (LCA). The goal is to identify the gaps in existing knowledge and suggest research opportunities for future study. The results indicate lack of comprehensive LCA framework to study the environmental impacts of modular and site-built construction. The findings recommend developing a comprehensive LCA framework for the comparison.","PeriodicalId":422911,"journal":{"name":"Modular and Offsite Construction (MOC) Summit Proceedings","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127747537","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":"Unmanned aerial vehicles usage on south african construction projects: perceived benefits","authors":"O. Akinradewo, C. Aigbavboa, M. Ikuabe, S. Adekunle, Adetola Adeniyi","doi":"10.29173/mocs276","DOIUrl":"https://doi.org/10.29173/mocs276","url":null,"abstract":"In recent years, unmanned aerial vehicles (UAVs) are being employed in various parts of the engineering industries for project development, project management, surveying, among others. UAVs can also be adopted in construction for pre-planning, proper surveying of the given area, checking or inspecting site safety and quality monitoring. Based on these envisaged uses, this study is set to assess the benefits of UAVs usage in the construction industry. This was achieved through a detailed literature review combined with empirical data analysis. Data was retrieved through questionnaire survey distributed to professionals randomly in the South African construction industry. The retrieved data was analysed using descriptive and inferential data analysis methods. Findings revealed that UAVs adoption in the construction industry will lead to reduction in worker’s injury as it will be implemented for monitoring of workers activities on site. It was also revealed that UAVs are useful in on-site asset tracking which allows stakeholders to have real-time information on the construction project from anywhere. The study concluded that the efficiency in the performance of the construction industry can be achieved through the adoption of UAVs in the different stages of construction projects.","PeriodicalId":422911,"journal":{"name":"Modular and Offsite Construction (MOC) Summit Proceedings","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133282985","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":"Automated BIM-based CNC file generator for wood panel framing machines in construction manufacturing","authors":"Mohammad Darwish, Fatima Alsakka, Sena Assaf, M. Al-Hussein","doi":"10.29173/mocs270","DOIUrl":"https://doi.org/10.29173/mocs270","url":null,"abstract":"Construction manufacturing companies are endeavoring to integrate new technologies and machinery automation throughout the various project phases in the ongoing shift away from traditional stick-built methods. The current practice in constructing manufacturing supports the integration of automated computer numerical control machines, which can undertake various operations and thereby reduce manual work. However, shop drawings need to be obtained from the building information model and imported to third-party software (such as computer-aided design / computer-aided manufacturing software) to generate the corresponding computer numerical control codes. This underscores the need for a fully automated solution for computer numerical control machines in construction manufacturing that reduces the reliance on third-party software, thereby reducing the time, effort, and cost otherwise spent on managing multiple software solutions. As such, the aim of this research is to develop a building information modelling-based automated tool to serve as a direct connection between the building information modelling environment and the automated machine. The tool facilitates the generation of a computer numerical control file directly from the building information model that will serve as an input to an automated wood-wall framing machine. For the wood framing machine under study, a set of rules was developed by which to generate the computer numerical control file directly from the building information model. This included developing an identification system for the main operations that can be performed by the machine and extracting information from the model that may be of relevance to the process. An add-on was then developed in Autodesk Revit to generate the computer numerical control file. The proposed methodology was validated by generating computer numerical control files using the developed add-on and inputting them to the machine. Using the generated computer numerical control files, the machine was found to be capable of properly performing the operations as planned.","PeriodicalId":422911,"journal":{"name":"Modular and Offsite Construction (MOC) Summit Proceedings","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125941219","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 of a novel insulation foam made from gypsum drywall waste","authors":"David Drake, Taiji Miyasaka","doi":"10.29173/mocs280","DOIUrl":"https://doi.org/10.29173/mocs280","url":null,"abstract":"Foamed plastic rigid insulation panels are effective for reducing building heating and cooling loads, with consequent reductions in energy use and associated greenhouse gas (GHG) emissions. However, plastic foam manufacturing and in-service use result in significant GHG emissions. In addition, plastic foams are flammable, and have been implicated in recent building fires. This paper describes proprietary mixtures and methods for producing drywall waste foam (DWF) panels, a carbon-neutral, fire-protective insulation made from gypsum drywall waste and other construction and demolition (C&D) waste materials. Gypsum drywall waste is inherently fire-protective and has relatively low thermal conductivity, but is a low-value commodity with few current reuse and recycling applications. DWF panels address two pressing issues in the built environment: decarbonization of building materials, and diversion of problematic C&D waste from landfills. Investigation of DWF panel engineering properties, including density, hardness, friability, burn-through time, and thermal conductivity are reported, with results compared to analogous commercially-available materials. Potential applications and areas for future investigation are also discussed.","PeriodicalId":422911,"journal":{"name":"Modular and Offsite Construction (MOC) Summit Proceedings","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116863691","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}