The use of Lean Construction (LC) practices has gradually spread in the construction industry. Ac... more The use of Lean Construction (LC) practices has gradually spread in the construction industry. Accordingly, mechanisms are necessary to evaluate their use so as to facilitate identifying strengths and weaknesses in the LC implementation process. This paper presents a protocol for assessing the use of LC practices, which has distinctive characteristics, such as: (a) assigning weighting factors to each practice, according to their degree of importance as attributed by the perceptions of seven experts; (b) establishing explicit conceptual links between each practice and lean principles, (c) selecting practices to be included in the protocol based on a systematic review of the LC literature; and (d) the use of multiple sources of evidence to carry out the assessment, which increases the credibility of the results. The protocol comprises 103 LC practices, distributed over 15 categories. This paper reports the application of the protocol in a residential building project, which allowed id...
The International Group of Lean Construction (IGLC) Annual Conferences have become an important s... more The International Group of Lean Construction (IGLC) Annual Conferences have become an important source of both theoretical developments and reports of practical applications concerned with the adaptation of lean production ideas into construction. This paper presents an analysis of the lean practices that have been discussed in IGLC conference papers. It used as a starting point an analysis and classification of 3,139 keywords from 685 papers published between 1993 and 2010. A set of practices were identified and classified in categories. More than 50% of the papers were focused on four categories: production planning and control (18.4%), product development (16.4%), logistics and supply chain management (9.7%), and human resources (9.1%). Moreover, the study pointed out that some important lean construction practices have not been emphasized in the papers, such as those related to quality control, standardization and pull production.
Journal of Construction Engineering and Management, 2015
AbstractIncident reporting systems (IRSs) are well-known for producing proactive information for ... more AbstractIncident reporting systems (IRSs) are well-known for producing proactive information for safety management. However, there is little guidance on how the analysis of IRSs can provide feedback for improving those systems. Thus, the question addressed in the research reported in this paper is stated as, how can the analysis of IRSs support the identification of opportunities for improving their design? Case studies were carried out in the IRSs of three construction companies. A qualitative analysis of the IRSs was made, based on semistructured interviews, participant observation, direct observation in construction sites, and analysis of documents. A quantitative analysis was made of 946 incidents reported in 16 construction sites. Those events were classified according to types, severity, duration of latent conditions, and number of reports per reporter. The contribution of the research reported in this paper is three-fold, as follows: (1) there were lessons learned from the analysis of IRSs, indicat...
This paper presents improvement proposals for a protocol developed for assessing the use of lean ... more This paper presents improvement proposals for a protocol developed for assessing the use of lean construction practices (LC) on construction sites. The protocol was originally developed and tested in an earlier study by the authors of this paper , covering 15 categories of LC practices identified from the Proceedings of IGLC between 1993 and 2010. In this paper, two enhancements are proposed in the protocol: (a) a framework to evaluate the relationships between the categories of practices, in order to identify the systemic impacts of the performance of individual practices, (b) the structure of a database to record best practices arising from the use of the protocol. This paper reports on the application of the improved protocol in 3 new projects, which have different characteristics regarding the construction phase and technologies from those in which the protocol was applied in its original form.
The use of Lean Construction (LC) practices has gradually spread in the construction industry. Ac... more The use of Lean Construction (LC) practices has gradually spread in the construction industry. Accordingly, mechanisms are necessary to evaluate their use so as to facilitate identifying strengths and weaknesses in the LC implementation process. This paper presents a protocol for assessing the use of LC practices, which has distinctive characteristics, such as: (a) assigning weighting factors to each practice, according to their degree of importance as attributed by the perceptions of seven experts; (b) establishing explicit conceptual links between each practice and lean principles, (c) selecting practices to be included in the protocol based on a systematic review of the LC literature; and (d) the use of multiple sources of evidence to carry out the assessment, which increases the credibility of the results. The protocol comprises 103 LC practices, distributed over 15 categories. This paper reports the application of the protocol in a residential building project, which allowed id...
The International Group of Lean Construction (IGLC) Annual Conferences have become an important s... more The International Group of Lean Construction (IGLC) Annual Conferences have become an important source of both theoretical developments and reports of practical applications concerned with the adaptation of lean production ideas into construction. This paper presents an analysis of the lean practices that have been discussed in IGLC conference papers. It used as a starting point an analysis and classification of 3,139 keywords from 685 papers published between 1993 and 2010. A set of practices were identified and classified in categories. More than 50% of the papers were focused on four categories: production planning and control (18.4%), product development (16.4%), logistics and supply chain management (9.7%), and human resources (9.1%). Moreover, the study pointed out that some important lean construction practices have not been emphasized in the papers, such as those related to quality control, standardization and pull production.
Journal of Construction Engineering and Management, 2015
AbstractIncident reporting systems (IRSs) are well-known for producing proactive information for ... more AbstractIncident reporting systems (IRSs) are well-known for producing proactive information for safety management. However, there is little guidance on how the analysis of IRSs can provide feedback for improving those systems. Thus, the question addressed in the research reported in this paper is stated as, how can the analysis of IRSs support the identification of opportunities for improving their design? Case studies were carried out in the IRSs of three construction companies. A qualitative analysis of the IRSs was made, based on semistructured interviews, participant observation, direct observation in construction sites, and analysis of documents. A quantitative analysis was made of 946 incidents reported in 16 construction sites. Those events were classified according to types, severity, duration of latent conditions, and number of reports per reporter. The contribution of the research reported in this paper is three-fold, as follows: (1) there were lessons learned from the analysis of IRSs, indicat...
This paper presents improvement proposals for a protocol developed for assessing the use of lean ... more This paper presents improvement proposals for a protocol developed for assessing the use of lean construction practices (LC) on construction sites. The protocol was originally developed and tested in an earlier study by the authors of this paper , covering 15 categories of LC practices identified from the Proceedings of IGLC between 1993 and 2010. In this paper, two enhancements are proposed in the protocol: (a) a framework to evaluate the relationships between the categories of practices, in order to identify the systemic impacts of the performance of individual practices, (b) the structure of a database to record best practices arising from the use of the protocol. This paper reports on the application of the improved protocol in 3 new projects, which have different characteristics regarding the construction phase and technologies from those in which the protocol was applied in its original form.
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