The Birth of Formwork with Single Pipe and Achievement of Higher Productivity
By M. Kaketani, Y. Sonobe, T. Onodera and T. Sato
Concrete Journal, Vol.62, No.7, Jul. 2024
- Synopsis
- The traditional formwork method has remained largely unchanged in the approximately 70 years since it was first developed in the 1950s, shortly after the war. Meanwhile, formwork carpenters, the practitioners of this method, are aging. Combined with the dwindling influx of young entrants and the increasing use of foreign labor, the quality of the labor force is changing. Owing to the lack of innovation in formwork methods and the declining number of skilled formwork carpenters, formwork construction productivity is falling. Against this backdrop, productivity improvement at construction sites is increasingly needed. In response, work to develop new formwork methods aiming for lighter weight and simplification is being conducted, and the method of formwork with single pipe was born as a result. How has the number of pipes used to tie formwork been reduced from two pipes to one? This paper describes the development process and presents specific examples of the increasing number of applications of this new formwork method.
- Keywords:
- Formwork with single pipe, Form tie, Aluminum pipe, Joint, Wale, Productivity improvement, Lighter weight
