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This report presents a collaborative research effort between the University of Salford
and Highways England on the implementation of the Visual Management (VM) concept,
a fundamental element of lean construction, in the highways construction supply chain. After 10 visits to 5 different highways construction sites to identify VM implementation oppor...
Context in source publication
Context 1
... improves efficiency, helps increase quality, and makes it simpler to spot problems and enhances productivity. Usually, sorting is realised by a red tagging strategy, which is adding red or coloured tags to various items (everything -materials, tools, equipment, consumables, processes, paperwork, computers, computer files & programs, processes etc.) that people think they might no longer need (see Figure 4). 2. Setting-in-order: Visually standardizing the necessary items with visual controls. ...
Citations
... 5S is composed of five main pillars: 'Seiri' (Sort), which is the organisation of needed and unneeded; 'Seiton' (Set in order) which is orderliness; 'Seiso' (Shine) that means cleanliness; 'Seiketsu' (Standardise) that indicates maintaining previous pillars; 'Shitsuke' (Sustain), which means discipline and following standardised procedures (Hirano 1995). Several studies observed the applications of 5S in construction projects and indicated the results as improved workplace and space utilisation, decreased variation, enhanced health and safety, increased efficiency and customer satisfaction (Tezel and Aziz 2017;Hiwale et al. 2018;Tezel and Aziz 2016) VSM is another powerful Lean tool that demonstrates the overall process with material, information and people flows in terms of customer value to identify waste and develop an improvement plan for the future state (Plenert 2007). Shekade and Gaikwad (2019) implemented VSM and emphasised that it provides identification and measurement of wastes and their sources, besides it helps reduce wastes. ...
Lean aims to maximize value while minimizing waste. Hence, it is essential to use Lean tools and techniques for achieving higher value in construction projects. Being one of the Lean techniques, time studies are of utmost importance in terms of measuring productivity and construction project success. This paper aims to assess the use and effectiveness of time studies in Lean construction projects along with a case study. According to the case study analysis, it is observed time studies are effective techniques to identify value and non-value adding activities. The study also indicates that it is critical to conduct time studies for implementing proper Lean strategies. Time study is not a direct tool to improve processes; however, it is an irreplaceable indicator, which helps identify waste and select best strategies accordingly. Hence, the main contribution of this study is to highlight the important role of time studies in terms of providing a roadmap for identifying waste and increasing productivity accordingly. Besides, a framework and strategies with respect to waste types are proposed to promote the use of time studies. The study is expected to encourage construction professionals in terms of utilizing Lean practices and specifically time studies in their projects.
... It achieves this by organising the workplace in a clean, efficient, and safe manner with the use of visual cues such that human capability and productivity is enhanced. Hence it is said that the 5S constitutes the basis for a visual workplace and many visual controls (Tezel & Aziz, 2016). The name 5S represents five Japanese words seiri, seiton, seiso, seiketsu and shitsuke. ...
... Even with scarcity of studies on the 5S in construction Tezel & Aziz (2016), there are a few studies that have discussed application of the 5S methodology in construction projects. Some of the implementation projects with their findings are listed below. ...
... Furthermore, in the United Kingdom, Tezel & Aziz (2016) carried out a research on implementation of the visual management concept in five different highway construction sites. ...
Health and safety issues in construction are a major source of concern across the world. Dealing with accidents and their aftermaths has a significant impact for construction firms as the prevention of such issues protects lives of workers and enhances efficiency and performances. In the Nigerian construction industry, this issue is even more substantial because many indigenous construction firms operating in the country do not value and prioritise risks and health and safety. As a result, accidents occur unnecessarily, which have a negative impact on the overall firms’ performance. Although the application of lean theory has been found to improve construction safety in other parts of the world, in Nigerian safety research, this problem has not been addressed fully and there is no safety framework available for accident prevention. The central aim of this research is to investigate how the adoption of lean practices can be the foundation for a safety system in the Nigerian construction industry.
To this end, the thesis contains an extensive literature review on sociotechnical systems theory, being the umbrella theory adopted in this study to understand the problems associated with construction safety and explore how risks can be mitigated using lean practice. The thesis further focuses on three lean construction techniques: the 5S Methodology, Visual Management and the A3/PDCA and their deployment. The goal is to apply these tools to develop a lean safety framework that construction firms in Nigeria can make use of to mitigate accidents and their root causes.
A qualitative study was conducted applying multiple case study design. In total, twenty-seven semi-structured interviews and non-participant observations were used to collect data from six indigenous construction companies in Nigeria: three small-scale and three medium scale companies. The collected data were thematically analysed.
The study found five major root causes of accidents in the Nigerian construction industry: (i) lack of information, knowledge, and training; (ii) inability to identify or recognise hazards/unsafe conditions in the worksite before the start of tasks; (iii) identifying hazards/unsafe conditions and continuing to work without first eliminating the hazards/unsafe condition; (iv) management failure to provide safe work environment; and (v) negative behaviour and attitude towards safety by workers. The study also found that the 5S methodology, visual management and the A3/PDCA can be implemented in a safety system to mitigate accident root causes. This led to the development of a Lean Safety Framework (figure 10).
Thus, the study has established that by providing a Lean Safety Framework (LSF), construction firms can improve health and safety performance and minimize the risks. Along with the developed framework, recommendations are provided for its use. This research makes two core contributions. It has contributed to theory development by expanding the use of sociotechnical systems theory, and by using the theory to detail how lean practice can be applied in safety systems to mitigate accident root causes in construction. It has contributed to the practice of lean and safety in Nigerian construction by developing a Lean Safety Framework that construction firms in the country can make use of to improve safety performance and save lives.
... It reduces confusion, extra steps and on-the-spot decisions and, therefore, reduces motion and decreases trip and fall hazards Nahmens and Ikuma, 2009). The first 3S are mainly about cleaning and organising the worksite, which reduce accidents caused by site congestion and reduce the chances of falling and slipping (Anerao and Deshmukh, 2016;Cudney et al., 2015;Ogunbiyi, 2014;Vieira and Cachadinha, 2011;Bashir, 2013;Bashir et al., 2011;Abdelhamid and Salem, 2005;Salem et al., 2005), while the last two 5S are about promoting safety culture around the employees and to make 5S a way of life, which reduce accidents caused by poor safety culture (Anerao and Deshmukh, 2016;Tezel and Aziz, 2016;Cudney et al., 2015;Ogunbiyi, 2014;Bashir, 2013;Bashir et al., 2011;Vieira and Cachadinha, 2011;Abdelhamid and Salem, 2005). ...
Purpose – This paper aims to investigate the application of lean construction (LC) techniques in reducing accidents in construction projects.
Design/methodology/approach – A quantitative approach was used to collect the required data using a questionnaire survey and descriptive analysis was used to analyse the collected data. The LC techniques that were investigated in this paper are related to the tools of the last planner system (LPS), increased visualization (IV), 5S, error-proofing, daily huddle meetings (DHMs), first-run studies (FRS), continuous improvement (Kaizen) and accident investigation (5Whys).
Findings – The overall results indicated that LC techniques are poorly implemented in construction projects in the Gaza Strip. The top three LC tools used to reduce the causes of accidents in the Gaza construction projects were 5Whys, 5S and LPS, while the highest three LC techniques applied to reduce the causes of accidents that were applicable were cleaning the workplace and removing materials and machines that are not required; conducting accident investigation and root cause analysis programs; and using safety signs and labels on site.
Research limitations/implications – There is a lack of information and published studies regarding the links between LC and safety, especially in the Middle East. This paper is limited to the perceptions and geographical boundaries; therefore, it cannot be generalized. However, it could form the basis for useful comparison in the future. Triangulation research method could also be used in future research to minimize the bias and validate the conclusions.
Practical implications – The findings of this paper will stress professionals and construction companies in Gaza to reconsider their behavior towards using LC techniques. The findings of this paper will aid them to shift their attention and resources towards including LC techniques in their plans to reduce the causes of accidents on construction sites.
Social implications – The findings of this paper will encourage professionals and construction companies in Gaza to reconsider their behavior towards using LC techniques. The findings will also aid them to shift their attention and resources towards including LC techniques in their plans to reduce and/or avoid the causes of accidents on construction.
Originality/value – Because of the lack of published works that are specific to the Middle East, the authors believe that the originality lies in the paper’s serious attempt to explore the application level of the LC concept to safety in this part of the world. This paper contributes to a better understanding of the applicability of LC techniques in terms of accidents reduction. Findings from this paper provide a clear picture of the current status of using LC techniques to reduce accidents in the Gazan construction projects which drive them to investigate the main barriers and try to overcome them
