What Is the U-Shaped Calculator?
Plan U-shaped stairs with two parallel flights connected by a 180-degree landing platform. This calculator determines riser height, tread depth, landing dimensions, and the total floor space required for both flights. U-shaped stairs are ideal for two-story homes where space efficiency and fall protection are priorities.
How to Use This Calculator
- Enter the total floor-to-floor rise.
- Set your desired tread depth and stair width.
- Configure the landing dimensions between the two flights.
- Review the calculated footprint, individual riser height, and flight lengths.
Why Accurate U-Shaped Calculations Matter
U-shaped stairs require more floor area than L-shaped alternatives but provide superior safety - the 180° landing acts as a fall-arrest point. The gap between the two flights (well width) must accommodate handrails on both sides.
Building Code References
Related Tools
Frequently Asked Questions
What is the difference between U-shaped and switchback stairs?+
They are functionally the same - two parallel flights with a 180° turn. 'Switchback' is often used for taller installations with multiple turns, while 'U-shaped' typically refers to a single 180° turn.