A Model for Evaluating Causes of Wastes and Lean Implementation in Construction Projects

Abstract

The wastes in construction projects such as wastes in materials, time, resources and achieving customer needs can be minimized using the new philosophy of Lean Construction (LC). This paper proposed a two-level model based on fuzzy logic technique for evaluating Causes of Wastes (CWs) and lean implementation in construction projects. The probability of occurrence and importance of CWs were two input parameters in level 01 of the model, whereas the output was the level of waste. On the other hand, level 02 of the model depended on using three input parameters which were: level of waste, controllability level for CWs and lean implementation level, while the output was the lean effect. Several linguistic variables and logical rules were used for relating inputs and outputs and new indices were introduced. The model was applied and validated for data collected in two countries: Egypt and Kingdom of Saudi Arabia (KSA). Results demonstrated that the expected lean effect is found with a positive correlation with various levels of wastes and can be improved by increasing controllability and lean implementation levels. Regarding the comparative study between the two countries, distinct disparities in lean effect were clarified. Most measured CWs indices were different in both countries while indices values in KSA were higher than in Egypt either in waste, controllability or implementation levels. The results presented an optimum arrangement to reach an effective new lean evaluation model that could be implemented for moving the traditional construction towards LC. Finally, the model can be applied easily in most countries to help decision makers in evaluating CWs and lean implementation in their construction projects.

Lean and BIM integration benefits construction management practices in New Zealand

“…Past study shows the significance of integrating BIM and Lean construction and evaluates the consistency approach through a combination of information theory, which handles not only supply chain consistency at a given state but also predicts consistency in supply chain state, change due to changing project conditions (Tang et al , 2020). Implementing Lean principles in construction projects reduces the amount of time, eliminates waste which may tend to slow practice and alter quality that affects the sustainability management aspect, and BIM as a modern information technology that solves issues in the construction process and is widely applied in the life cycle of a project for visualization, scheduling, communication and teamwork among project construction, promote the process of forming, accumulating, controlling, transforming and effectively delivering construction information (Issa and Alqurashi, 2020).…”

Implementation of the Lean Construction Methodology in the Management of the Material Transportation Process- A Review

“…Table 3 presents the Lean techniques and tools found in this systematic literature review. [29], [35], [36] 7 Improves sustainability 4 [27], [28], [36], [37], [83] Table 3. Lean-type techniques or tools that improve the management of material transport processes # LC Techniques / Tools Brief Description Quantity Reference…”

Una revisión del impacto de la adopción de la metodología Lean Construction en los proyectos de construcción

“…El éxito pionero del concepto de Lean Production (LP) de Toyota Production System (TPS) ha inspirado a otras industrias, incluida la IC, a adoptar el concepto Lean, el cual ha mejorado el desempeño de la organización en la industria automotriz. El término LC fue adoptado por la International Lean Construction Corporation (GILC) en su primera reunión en 1993 [7].…”

“…[34] señalan que el uso de diseños de productos una fuerza laboral versátil ayudan a aumentar la (7) Incrementar la transparencia del proceso. La transparente y observable, esto es, facilitar el seguimiento y la mejora para todos los empleados.…”