The formwork should be easy to install and remove multiple times and be movable from one construction site to another.To remove the formwork quickly and easily without damaging the concrete, since the removal of the formwork after the concrete mix has hardened may cause major difficulties for the construction personnel, there are special fixing and fastening elements, which greatly facilitate the work of the construction personnel. https://johnwilson111.blogspot.com/2022/05/reinforcement-classification-types.html