Identification of causes of resource waste during concrete processes - Case study

The reduction of wasted resources presents an important part of the lean construction principle. This article is focused on the identification of the causes of resource waste during the realization of concrete structures. Resources are divided into groups containing materials, human sources as well as building devices. The starting point for solutions is the analysis of risks in the concreting process for particular resource groups. Input data is obtained from realized concrete structures, in the form of a structured interview and many visits to the construction site. The problem is solved on case studies of selected building. The aim of the research is to point out the waste of resources by identifying possible project risks during concreting processes as well as to identify the possible causes and consequences in the realization of concrete constructions. The paper pointed out the risks associated with production of fresh concrete, formwork and transport of concrete. At the same time, paper has identified the application of permanent formwork elements as one of the possible approaches to material wastage within lean production. The waste of resources, whether material, human or devices, can be significantly reduced by thoroughly identifying the causes.