Abstract
This paper aims to present the process of identification, measurement and characterization of transport wastes in construction processes, taking into consideration their incidence, times, causes and consequences. The method adopted was Design Science Research, carried out through two case studies in processes that are still sparsely used in Brazil, i.e., the projected mortar coating system and the Light Steel Frame technology. The studies were conducted through the following steps: identification of physical flows, identification of the distribution of workforce production time, and identification and quantification of transport wastes' causes. Multiples sources of evidence, tools and techniques were used for the data collection in order to describe each transportation waste event, asociated on its cause and impacts. The findings indicated that most of the transport waste events were caused by problems related to access and mobility on the jobsite, however, the problems caused by lack of appropriate equipment to carry out the transport activities were the most common cause of lost time. Unsafe conditions and new transport were the principal consequences observed. The main contributions of this study are related to an improved understanding of the nature of the transportation wastes, as well as the definition of a set of tools and indicators to characterize transport waste, and a proposal of classification of transport waste causes and consequences to characterize these wastes.
Keywords:
Lean construction; Construction waste; Transport wastes
