How to: Formwork for funnel structures

Concrete structural elements that are curved and inclined on one side can be produced simply and rationally with Stremaform^® formwork elements.

The layer-by-layer compaction of the concrete can be observed thanks to the Stremaform^® material. Gravel pockets and voids can thus be avoided.
In the subsequent work step a further concrete layer is applied to ensure the concrete coverage of the structural element. The dismounting of the shaping formwork on the upper side is not necessary.

• Place reinforcement with suitable spacers on the lower formwork.
  
• Position the Stremaform^® prefabricated elements, slightly overlapping them at one side (approx. 50 mm). Fix the elements to one another and to the reinforcement.
  
• Pour concrete between the lower formwork and the Stremaform^® elements and compact layer by layer. 
  
• Check that the structure of the concrete is homogeneous and free from voids. 
  
• Apply a concrete layer in the thickness of the concrete coverage and model it.