Kerb Formwork is also known as starter/Kicker
In Construction work, before any construction starts for wall or columns it require 100mm to 500mm kerb/starter/kicker
Vertical concrete has to overlap the formwork on the old concrete (Kerb Concrete)
Eg.
In construction of a tunnel the concrete lining has to be done as per the profile drawing issued by the designer/consultant
And the concrete lining sequences/ method is also given by the designer/consultant
Step-1 Kerb Concrete
Step-2 Overt Concrete
Step -3 Invert Concrete
And therafter the kerb formwork, hydraulic/Mechanical is designed & supplied by the Manufacturer to civil construction company