The document discusses spiral stairs, which are characterized by a continuous design without landings or intermediate newel posts. It outlines the types of spiral stairs, their typical materials, and applications, including space-limited locations and as emergency exits. The content also notes that all steps are winders, affecting comfort, and mentions guidance for design and drafting.

1. SPIRAL STAIRS

2. Continuous stairs
• The stairs which do neither have any landing nor any
intermediate newel post.
• TYPES
a) Circular stairs
b) Spiral stairs
c) Helical stairs

3. SPIRAL STAIRS
• Usually made either of RCC
or metal, and is employed
at a location where there
are space limitations.
• Also used as emergency
stairs and are provided at
the back side of building.
• All the steps are winders.
Therefore the stair is not
comfortable.

4. Guidance for designing

10. Number of
steps per
revolution

11. THE FUN PART
DRAFTING !!!!!!!!!!!

15. THANK YOU
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