Work standards are an essential component of lean production systems. The unique and one-of-a-kind nature of construction products adds an additional layer of complexity when designing work standards in such a particular context. This research focuses the process of designing work standards for construction. The purpose was to highlight the difficulties observed when designing the specifications that make up the standard. An in-depth case study was carried out in a company that had been struggling to meet a stable cycle time for the reinforced concrete structure phase of multi-story buildings. An analysis of the current process was undertaken and a literature review of the work standards was conducted in order to identify possible ways to specify the work elements. The study suggests that a large amount of time is spent on the work design owing to (a) the level of uncertainty (lack of productivity data to support the design of the work packages over the cycle time; frequent moving of the workers from one work package to another; lack of resources near the workstation); (b) a project being created very close to the start of the actual production and, therefore, suffering from conditions imposed by the decisions previously taken; and (c) a team of workers unaware of lean concepts.
Standard, Work Design, Workflow