An observational study on the productivity of formwork in building construction

摘要

Formwork is one of the essential elements of construction work in traditional reinforced concrete building construction. In addition to being complicated work, formwork is labour intensive and requires numerous, highly skilled workers such as formwork carpenters. In view of the fact that highly skilled formwork carpenters are in short supply and hence this spurs the search for construction techniques or methods that are less labour dependent. Formwork also exerts a direct influence on the surface quality and dimensional tolerance of concrete. Since the vast majority of buildings are constructed using concrete, the quality of the formwork will determine the level of workmanship of the construction work to follow. In order to increase formwork efficiency and the quality of construction work, it is necessary to improve work methods and work processes, and to aim for higher work efficiency using scientific management. This requires analysing fundamental data such as work processes and work hours, and identifying the problems that are inherent in the work itself and the essential aspects of management. The observational study was conducted over fifteen projects to measure man-hours of formwork. Based on the data statistical analysis was carried out.