Value stream mapping for identification and assessment of material waste in construction: A case study

Abstract

Construction sites are plagued with numerous problems, such as improper planning and management, high amounts of waste generation and low awareness of waste reduction. Construction and demolition waste literature provides several best practises and prescriptive strategies that help minimise waste during construction. However, it lacks in the systematic identification and minimisation approach of all possibilities of waste. Therefore, studies focusing on principles and tools that help systematically analyse the inefficiencies of on-site processes leading to waste generation and philosophies addressing waste minimisation are necessary. As eliminating waste is one of the key lean principles, this article discusses the need and importance of integrating the lean construction with the construction and demolition waste management. This article aims to estimate and assess the causes of waste generation in a high-rise building construction through a case study in Chennai city (India) using value stream mapping, a key lean construction tool. Onsite monitoring and measurement were performed to quantify the amount of waste generated. A waste generation rate of 66.26 kg m−2 was identified, of which concrete, cement mortar and brick waste represented almost 90% of the total construction waste. Direct observation and interviews of site personnel were conducted to understand the causes of waste generation. A strategic framework has been proposed to improve construction and demolition waste minimisation depicting the synergy of combining lean construction principles with construction and demolition waste management strategies. The proposed framework helps in the systematic identification, assessment and minimisation of on-site construction waste generation.

Mapeamento de Pontos de Deposição Irregulares de Resíduos de Construção e Demolição da Cidade de Caruaru, Pernambuco

“…A deposição desordenada de resíduos de grandes e de pequenos geradores têm alterado significativamente o meio ambiente e a sociedade, causando problemas de diversas ordens e magnitudes (Zhao, 2021). O aumento acentuado da geração de resíduos sólidos tem levantado as preocupações ambientais em todo o mundo que atualmente têm escalado para um nível preocupante (Tang et al, 2020) Atualmente, uma grande quantidade de RCD gerados são despejados em aterros sanitários, espaços abertos ou descartados ilegalmente nos corpos d'água e margens de estradas (Vilventhan et al 2019). Como consequência da destinação inadequada, tem-se impactos negativos na fauna e flora, nos leitos dos rios, nos ambientes urbanos e até nos aterros sanitários.…”

Avaliação da produtividade do centro cirúrgico de um hospital universitário sob a ótica do Lean Healthcare

“…Um desses metodos é o Value Stream Mapping (VSM) ou Mapeamento de Fluxo de Valor (MFV), que consiste em uma tećnica de mapear todas as atividades da produção descrevendo por imagem o seu estado atual (Zahrotun & TauWiq, 2018;Vilventhan, Ram & Sugumaran, 2019).…”

An Implementation of Lean Concept with 5S to Eliminate Material Waste in Precast Factory

“…Vilventhan resulted A waste generation rate of 66.26kgm−2 was identified from a building construction case study, and almost 90% waste from concrete, cement mortar, and brick. A lean strategic framework has been developed showing synergistic benefits to be gained in combining lean construction literature with the C&D waste literature [11]. Kodheir concluded that using this tool can affect the environmental sustainability by reducing material waste by 64% in gypsum board hanging process, and the economic dimension by reducing working hours by 31% in the interior painting process.…”