The application of lean management is able to improve construction processes. Unnecessary waiting time, overstaffing and risk uncertainty are some of the problems that can be eliminated by adopting lean management. Industrialised Building System (IBS) is a sustainable approach that can be improved construction deliverables with the integration of lean management. However, the adoption or practice of lean management in productions of IBS component productions is still limited. There are only few studies emphases on the interactions among key drivers and hierarchy of lean management key drivers model. This study used Interpretive Structural Modeling (ISM) to interpret relationship of drivers and challenges in integrating lean management in form of ISM based-model and Matrice d'impacts croisés multiplication appliquée an classment (MICMAC). The results from this will improve the adoption of lean management in IBS application.
Abstract. Modular coordination (MC) is recognized as a tool towards rationalization and industrialization. The implementation of MC concept in the design stage may improve the constructability and construction time. However, the implementation of MC in Industrialized Building System (IBS) implementation is still low compare to other developed countries such as the United Kingdom, Sweden and Japan. This paper examined the interrelationship between motivational factors of stakeholders in adopting MC concept using Interpretative Structural Modeling (ISM). Questionnaire survey was engaged in this study to identify significant motivational factors. Then, semi-structure interviews were used to collect qualitative data. ISM was adopted to build relationship between factors and develop an initial model to promote the adoption of MC in IBS construction. Seven (7) significant motivational factors were identified in this research namely 1) 'stakeholder's commitment', 2) 'reduce site disruption', 3) 'increase productivity', 4) 'high skilled workers', 5) 'site sustainability (environment, economy and social benefits)' 6) 'standardization' and 7) 'enabling 'open building' concept'. The result using Matrice d'Impacts Croises Multiplication Applique an Clasment (MICMAC) shows that there are three factors can be categorized as Independent / Driving Factors namely 'stakeholder's commitment', 'standardization' and 'enabling "open building" concept'. These factors should be explored in details to enhance the adoption of IBS in Malaysia. The findings provide a very good platform for a further research in formulating an efficient solution to promote MC concept adoption among the stakeholders. This scenario will improve the deliverables of IBS construction and eliminate negative perception in its implementation.
Malaysia is committed to improve deliverables of construction industry especially in meeting the sustainable objectives. Lack of systematic tools and poor collaboration between key stakeholders have been identified as the main barriers to meet the objectives. The purpose of this paper is to present an integrated approach that can be able to assist designers, who are at the forefront in decision making, to select the best strategies that have been shown to be effective in promoting sustainability for IBS application. Questionnaire survey and interviews of the local practitioners were conducted to identify critical factors and provide recommendations on how to enhance sustainability by holistically addressing the identified issues during IBS design. SWOT (Strengths, Weaknesses, Opportunities and Threats) analysis framework was used to help decision-makers maximise the opportunities by using available strengths, avoid weaknesses, and diagnose possible threats in the examined issues. From the statistical analysis, eighteen critical factors relevant to IBS sustainability have been ranked. The guidelines were formulated based on the results from interviews to local practitioners and may be used as part of the project briefing documents for IBS designers. Holistic design strategies expand "Triple Bottom Lines" considerations in achieving sustainability. This study fills a current gap by responding to IBS project scenarios in developing countries. It also provides a balanced view for designers to better understand sustainability potential and prioritize attentions to manage sustainability issues in IBS applications.
Abstract. The use of fibre reinforced polymers (FRP) for external strengthening of concrete structures in various forms such as laminates and sheets has become moderately common. FRP is more effective as it provides a better solution in terms of properties and application. The effectiveness of the FRP strengthening system lies in the bond between concrete and FRP which is affected by various factors such as bond length of FRP, bond width, resin hardening and surface preparation. In certain cases, bond width is a major factor which ensures that the structure can be strengthened properly. This paper focuses mainly on the failure behaviour of concrete prisms strengthened by various bond width ratios of carbon Fibre Reinforced Polymer (CFRP) which are 20mm (0.27), 40mm (0.53), 60mm (0.8) and 75mm (1) respectively. A total of fifteen strengthened prisms measuring 75 mm x 75 mm x 350 mm were cast for a three-point load test. Twelve strengthened prism specimens were externally strengthened with CFRP and three specimens were designated as control. The findings show that a greater width ratio of CFRP will strengthen concrete prisms greatly and will result in different types of failure modes.
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