Structure
Continuous Handrail
When posts support the handrail from underneath, allowing the handrail to flow uninterrupted throughout the staircase.
![](https://specializedstairs.com/wp-content/uploads/2016/03/continuous-handrail.jpg)
Birdsmouth Stringer
Birdsmouth stringers are a design choice that results in the bottom edge of the stair stringer being continued into a ceiling or stair header.
![](https://specializedstairs.com/wp-content/uploads/2016/03/birds-mouth-1.jpg)
Support Post
A support post is a way to support a freestanding stair instead of using a big foot.
![](https://specializedstairs.com/wp-content/uploads/2016/03/support-post.jpg)
Big Foot
A big foot is a way of supporting a frestanding stair by vertically extending the stringer to the floor. This creates a wedge-shaped support for the staircase.
![](https://specializedstairs.com/wp-content/uploads/2016/03/big-foot.jpg)
Self Supported Stairs & Landing
This type of landing is integrated into the stair stringers eliminating the need for support posts.
![](https://specializedstairs.com/wp-content/uploads/2016/03/self-supported-landing.jpg)
Stair Notch
A stair notch is a portion of a stair where the stringer jogs around the corner of a wall.
![](https://specializedstairs.com/wp-content/uploads/2016/03/stair-knotch.jpg)