Regardless of the type of formwork, its design should provide:
- strength and rigidity sufficient to maintain the geometric shape and dimensions under the influence of static and dynamic loads;
- dimensional accuracy and required surface quality of manufactured monolithic structures;
- poor adhesion to concrete (does not apply to fixed formwork);
- the ability to change the size and configuration of individual blocks directly on the construction site;
- fixing embedded parts in the position specified by the project with the required accuracy;
- ease of replacement or repair of structural elements damaged during operation.
Forming surfaces must be chemically neutral to concrete, and also provide the ability to maintain the temperature and humidity necessary for setting and gaining concrete strength, provided for by the design documentation. The formwork design must provide devices or fixtures that can be used to pre-separate the panels and panels from the concrete surface.
