The wall external corner angle is mainly used to connect the adjacent wall column formwork at the corner of the external corner. The external corner formwork itself does not touch the concrete and only serves as a connection. Usually, one side of the external angle formwork is fixed with bolts to the wallboard on this side, and the other side is connected with the wallboard on the other side with movable pins, so that repeated assembly and disassembly work can be avoided.
Aluminum Formwork System is a construction system for forming cast in place concrete structure of a building. It is also a system for scheduling and controlling the work of other construction trades such as steel reinforcement, concrete placement, and mechanical and electrical conduits.
The System is fast, simple, adaptable, and very cost-effective. It is unique because it forms all of the concrete in a building including walls, floor slabs, columns, beams, stairs, window hoods, balconies, and various decorative features in exact accordance with the architects' design. The dimensional accuracy of the concreted work also results in consistent fittings of doors and windows. The smooth–off-form finish of the concrete eliminates the need for costly plastering.