A key for liberation formwork conceived to authorize in fine weather daily rotationof the formworks for floors with a appropriate staying. Besides, this key permits an easy formworks liberation in case of réalization of closed cages (stairs or elevators). Its employment eliminates the presence of dangerous nails or wooden pieces which generally inder a work site. Security and cleaning are assured.

Key for formwork liberation used in closed cages.

Key for formwork liberation used in slab with efforts transmission on stays.

The poured concrete the day before with the Alu-Formwork is ready to be liberated.

Settling stays under keys and immediate lifting of other stays which support formwork.

The Alu-Formwork now can be liberated because the stays under the keys are on site to bear the slab freshly poured.