Use this procedure to specify mitered corners for center stringers at landings and turns. You can specify this option when working with multi-landing, u-shaped, and custom stairs. You cannot specify this option when working with straight or spiral stairs.
Curved and mitered center stringers at landing turns
With the Curve center stringers at turns option cleared, the center stringer is mitered to match the angle of the landing turn. In most cases, this will be a right angle, but any other angle is also possible.
Mitered center stringers at angled landing turns