Koskela (1992) adds that lean construction improves the reliability and quality. The research on lean manufacturing is essential in ensuring that construction works conform to the environmental conservation measures. As stated earlier that construction sector has been considered to be highly associated with poor management of pollution notably waste management and the general conservation of environment. This has been attributed by adoption of traditional management and sustainability concepts of construction. Thus, due to this deficiencies construction firms have shifted towards the adoption of lean construction and the overall sustainability practices in its construction projects (Smith, 2003). .
The lead construction initiatives aiming sustainability are based on VSM techniques and the achievement of lean and green sustainability. This management approach of construction projects enhances stakeholder’s efforts in the implementation of sustainability strategies in the construction project stages. The effectiveness and the reliability of VSM techniques is that its system has been integrated with both the production and environmental sustainability (EPA, 2007a). Research on the implementation of the construction lean management techniques in construction work has not been done widely. Stakeholders have overemphasized the aspect of environmental conservation in the design phase instead of the crucial construction phase.
Larger amount of waste is realized in the construction phase. This has resulted into intensive research towards the adoption of value stream mapping in the environmental conservation in construction sites. VSM is widely adopted in the manufacturing sector in the management of waste in the whole process and has proved to be effective. Effective adoption f this technique ensures that all the activities in the manufacturing process adds value to the product. Thus VSM techniques implementation in the construction works enhances environmental conservation as well as green and clean construction process. This is one of the key objective in which the research paper will address in order to develop an appropriate VSM integrated system which is able to address the waste environmental implications in the construction of projects. This objective is important in the process of gearing towards the achievement of effective and reliable VSM
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