OTIMIZAÇÃO DE PROCESSOS NA CONSTRUÇÃO CIVIL: UM CASO SOBRE A VIABILIDADE DO LEAN CONSTRUCTION EM RESIDÊNCIAS UNIFAMILIARES

PROCESS OPTIMIZATION IN CIVIL CONSTRUCTION: A CASE ON THE FEASIBILITY OF LEAN CONSTRUCTION IN SINGLE-FAMILY HOMES

Abstract

Lean Construction enables the rethinking of construction processes, impacting the reduction of waste, whether financial, time-related, or labor-related. Although its benefits are more evident in multifamily housing, which offers greater potential due to process repetition, this study aims to assess the feasibility of applying the lean philosophy as a replacement for traditional methods in the construction of a single-family residence. This type of project, by its nature, involves a smaller and more customized scale, meaning that the lack of process repetition can be a barrier to economies of scale. The adopted methodology is a case study, illustrated by a standard single-family residence, in which alternatives will be investigated to reduce waste in five construction methods (concreting, internal and external enclosures, subfloor, and flooring). The comparative analysis of leaner construction methods versus traditional methods considered labor use and overall costs. The results show that, except for the subfloor, the application of leaner principles brought significant benefits, with the potential to reduce 257.71 labor hours in the studied processes. This gain in construction speed can be achieved with an additional investment of R$ 3,919.99, representing a 7.7% increase compared to the costs of traditional methods.