9.6.4.2. Cut slabs above stair

The program selects the slab above the stairs and cuts it automatically according to the position of the stairs. In this case the width of the slab cut is defined by the width of the stair. The program finds the step from where the ’free height’, i.e. the height set by the user, is equal to the distance between this step and the slab. This allows an adult person to go up the stairs in upright position.