How are stairs built

Baunetz_Knowledge

A distinction is made between those running along walls Wall cheeks and those that run freely in the stairwell Freiwangen. Since the cheeks are mainly subjected to pressure and tension in the vertical direction, slim upright profiles are particularly suitable for load transfer.

The design of the cheek supports plays an important role in the construction of stringer stairs. One possibility is to hang the cheek on the upper edge of the platform or ceiling while the lower support is designed to be movable. Often a block step screwed to the ceiling at the lower end of the stairs serves as an abutment for the cheek, which is then leaned against the upper edge of the platform or ceiling. For a flush transition between the rising and falling cheek on the pedestal, it is important that the number of inclines and steps between two pedestals is the same. This means that either the bottom or the top step is at the level of the upper edge of the floor or that half a step is inserted at floor level at the top and bottom. The curved connecting piece between the upward and downward cheek is called a curvature.

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