Conceptual framework of construction productivity estimation

Construction productivity has been generating significant interest in both the construction industry itself and academia. Productivity management is currently recognized as a formal project management process in construction. However, most previous studies focused on defining factors that influence productivity and on measuring limited parts of activities at a micro level to investigate the relationship between factors and productivity. Construction productivity rates differ between projects because of the varying environments, characteristics, and project management efforts for each project. This study performed an extensive liter ature review on productivity in construction to support the rationale of a proposed conceptual productivity estimation model. The conceptual model is proposed for estimating productivity: expected productivity based on both project environment factors and management efforts. It also presents a comparison between project productivity expected, given the project environment and level of management efforts, and the raw (observed) productivity measure in the field.