One of the difficulties hindering the application of 3D printing technology in construction is related to the versatility of materials and components used to produce a building or other structure. The prospect of using this technology is further complicated by the sheer size of the edifices to be constructed. While 3D printing a mechanical component can now be done in someone’s basement with affordable and readily available equipment, applying the same technology to produce large structures and building components is a challenge. In recent years, researchers have been working towards overcoming this challenge by trying to develop new construction materials and methods that would be more suitable for the application of 3D printing technology. One of the approaches that can be considered is the combination of robotics technology with 3D printing to automate construction activities. The use of robots in construction has been proposed long before 3D printing became possible or known but never gained widespread construction site usage, mainly because of the difficulty associated with the automation of most construction tasks. However, the combination of 3D printing with robotics may be the way to change that. In this paper, the authors examine the suitability of 3D printing in a number of construction tasks and present ideas that modify established construction methods to make them more suitable for automation. The authors then examine how the introduction of robotics in conjunction with 3D printing to the construction site may make it possible to automate a number of construction tasks. Some of the benefits of such automation include lower safety risks, improved control over construction schedules, more economical construction, and a better ability to build in remote areas and challenging environments.
{"title":"A Synopsis of 3D Printing and Robotics Applications in Construction","authors":"S. Elhouar, M. Alzarrad, Samar Elhouar","doi":"10.3311/ccc2019-105","DOIUrl":"https://doi.org/10.3311/ccc2019-105","url":null,"abstract":"One of the difficulties hindering the application of 3D printing technology in construction is related to the versatility of materials and components used to produce a building or other structure. The prospect of using this technology is further complicated by the sheer size of the edifices to be constructed. While 3D printing a mechanical component can now be done in someone’s basement with affordable and readily available equipment, applying the same technology to produce large structures and building components is a challenge. In recent years, researchers have been working towards overcoming this challenge by trying to develop new construction materials and methods that would be more suitable for the application of 3D printing technology. One of the approaches that can be considered is the combination of robotics technology with 3D printing to automate construction activities. The use of robots in construction has been proposed long before 3D printing became possible or known but never gained widespread construction site usage, mainly because of the difficulty associated with the automation of most construction tasks. However, the combination of 3D printing with robotics may be the way to change that. In this paper, the authors examine the suitability of 3D printing in a number of construction tasks and present ideas that modify established construction methods to make them more suitable for automation. The authors then examine how the introduction of robotics in conjunction with 3D printing to the construction site may make it possible to automate a number of construction tasks. Some of the benefits of such automation include lower safety risks, improved control over construction schedules, more economical construction, and a better ability to build in remote areas and challenging environments.","PeriodicalId":231420,"journal":{"name":"Proceedings of the Creative Construction Conference 2019","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133915854","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}
Digitalization transforms the design, construction and operation of buildings and brings promises of integrated information exchange, ease of communication and productivity improvements for the who ...
{"title":"Industrialized and Project-Based Construction - Standards Versus Business Models","authors":"N. Andersson, Jerker Lessing","doi":"10.3311/ccc2019-052","DOIUrl":"https://doi.org/10.3311/ccc2019-052","url":null,"abstract":"Digitalization transforms the design, construction and operation of buildings and brings promises of integrated information exchange, ease of communication and productivity improvements for the who ...","PeriodicalId":231420,"journal":{"name":"Proceedings of the Creative Construction Conference 2019","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134127784","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}
Gul Polat, Harun Turkoglu, Atilla Damci, Firat Akin
Detection of unbalanced bids is crucial for owners because selecting an unbalanced bidder as the contractor may bring about cost overruns. There are two main types of unbalanced bids, namely, mathematically and materially unbalanced bid. This study mainly focuses on the second type, where a contractor tends to increase the unit prices of items whose quantity was somehow underrated by the owner’s team. This study proposes a modification to a model that was developed to assist owners in detecting unbalanced bids. The major difference between the proposed model and the previous one lies in the grading system of detecting the unbalanced bids. In the proposed model, eight different grading systems are used in detection of unbalanced bids, whereas the previous model consisted of five grading systems. The final score of each bidder is calculated by assigning weights to these grading systems. Bidders are evaluated not only according to the offered bid prices, but also according to the calculated final scores. The applicability of the proposed approach is presented along with an illustrative example. It was observed that the proposed model detected the unbalanced bid, which attains the lowest final score. The proposed model represents a marked improvement on existing practice and provides owners with a new perspective in detecting unbalanced bids. Armed with such a tool, it may be easier for owners to protect themselves from the risk of unbalanced bids.
{"title":"Improved Unbalanced Bid Detection Model","authors":"Gul Polat, Harun Turkoglu, Atilla Damci, Firat Akin","doi":"10.3311/ccc2019-051","DOIUrl":"https://doi.org/10.3311/ccc2019-051","url":null,"abstract":"Detection of unbalanced bids is crucial for owners because selecting an unbalanced bidder as the contractor may bring about cost overruns. There are two main types of unbalanced bids, namely, mathematically and materially unbalanced bid. This study mainly focuses on the second type, where a contractor tends to increase the unit prices of items whose quantity was somehow underrated by the owner’s team. This study proposes a modification to a model that was developed to assist owners in detecting unbalanced bids. The major difference between the proposed model and the previous one lies in the grading system of detecting the unbalanced bids. In the proposed model, eight different grading systems are used in detection of unbalanced bids, whereas the previous model consisted of five grading systems. The final score of each bidder is calculated by assigning weights to these grading systems. Bidders are evaluated not only according to the offered bid prices, but also according to the calculated final scores. The applicability of the proposed approach is presented along with an illustrative example. It was observed that the proposed model detected the unbalanced bid, which attains the lowest final score. The proposed model represents a marked improvement on existing practice and provides owners with a new perspective in detecting unbalanced bids. Armed with such a tool, it may be easier for owners to protect themselves from the risk of unbalanced bids.","PeriodicalId":231420,"journal":{"name":"Proceedings of the Creative Construction Conference 2019","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116121633","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}
Lean construction supply chain is a project management technique adopted from the manufacturing sector aimed at improving the performance of the construction industry. However, it’s implementation is confronted with some barriers in the construction industry such as; poor understanding of lean concept and absence of framework explaining the application. Therefore, this study developed a framework for lean construction supply chain adopting a bibliometric analysis approach. Bibliometric analysis is a statistical analysis of articles for revealing the school of thought, issues and problems in an area of study. The articles adopted for the analysis of this study were extracted from Scopus, Google Scholar and other online databases. The retrieved articles were inputted into VOS viewer software to reveal the network analysis. The analysis showed the significant countries and school of thought supporting the lean construction supply chain. The findings from the analysis showed that the construction industry in most African countries is slow towards the adoption of the lean concept. The network analysis showed that the practice of lean construction supply chain revolves around waste reduction, just in time, integration and pre-fabrication. This practice formed the variables used for developing the framework. The study recommends that further research should be conducted to validate the framework developed from the study. The study contributes to improving the practice of lean thinking within the construction industry.
{"title":"A Framework for Lean Construction Supply Chain; Bibliometric Analysis Approach","authors":"T. Osunsanmi, C. Aigbavboa, Ayodeji Emmanuel Oke","doi":"10.3311/ccc2019-024","DOIUrl":"https://doi.org/10.3311/ccc2019-024","url":null,"abstract":"Lean construction supply chain is a project management technique adopted from the manufacturing sector aimed at improving the performance of the construction industry. However, it’s implementation is confronted with some barriers in the construction industry such as; poor understanding of lean concept and absence of framework explaining the application. Therefore, this study developed a framework for lean construction supply chain adopting a bibliometric analysis approach. Bibliometric analysis is a statistical analysis of articles for revealing the school of thought, issues and problems in an area of study. The articles adopted for the analysis of this study were extracted from Scopus, Google Scholar and other online databases. The retrieved articles were inputted into VOS viewer software to reveal the network analysis. The analysis showed the significant countries and school of thought supporting the lean construction supply chain. The findings from the analysis showed that the construction industry in most African countries is slow towards the adoption of the lean concept. The network analysis showed that the practice of lean construction supply chain revolves around waste reduction, just in time, integration and pre-fabrication. This practice formed the variables used for developing the framework. The study recommends that further research should be conducted to validate the framework developed from the study. The study contributes to improving the practice of lean thinking within the construction industry.","PeriodicalId":231420,"journal":{"name":"Proceedings of the Creative Construction Conference 2019","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126443793","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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