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1. STAIRCASE
• IS A SET OF FLIGHTS OF STAIRS/A SERIES OF STEPS TO COMMUNICATE FROM
ONE LEVEL TO ANOTHER
• IT COMPRISES OF: – stringer, landings, tread, riser, nosing, newel posts, winder,
trim, handrails, balustrade, railing, runner,
• Angle – not more than 42 degrees and not less than 25 degrees
• Tread >9” (225) Riser < 6” (150)
• Headroom – > 2m (British) 7ft (USA)

3. STAIRCASE

4. SIMPLE TERMINOLOGY OF STAIRCASE

5. TYPES OF STAIRCASE
• Straight Flight Stairs.
• Straight Stair with central landing.
• Dog-legged
• L Shaped Stair.
• L Shaped Winder Stairs.
• Spiral Stairs.
• Curved Staircase.
• Library Ladder

6. Straight Flight Stairs

8. Dog-legged

10. Quarter Turn

11. SPIRAL STAIRCASE – a sculpture by itself

12. Design of Spiral Staircase

13. OPEN STAICASE – usually straight flight

14. Open Stairs – timber is commonly used

15. Open Concrete Stairs

16. Open stairs

18. Head Room- Stairway headroom should be greater than or equal to six
feet eight inches between the stair tread upper surface measured at the
tread outer edge, and the ceiling above

19. Library Ladder – for climbing purposes

21. L Shaped Stair

22. L Shaped Winder Stairs – for limited space

23. CURVED STAIRCASE – sculptured/monumental

24. • THANK YOU