General notes about stairs

1. STAIRS
By: Ameer Hamza Durrani
IQRA National University Peshawar

2. Contents: (14 slides)
• Definition
• History
• Design
• Types
• Terminologies
• Refrences

3. What is Stairs?
• Stair cases are used for the purpose of giving
access to different floors of a structure.

4. History
• It is dfficult to tell exactly in wich year they were born.
• It is believed his appearance was by the year 6000 before
Christ.
• The stairs seems to change shape with:
• 1: The change of architectural eras. (like Ancient Egypt,
Byzantine , Classical, Gothic etc)
• 2: Trends used in different ages.
• 3: The talent of those who designed them.

5. Design

6. Types
1: Straight Stairs:
• Simplest form
• It may consist of one or more flights
• Suitability: They are used when available space is long but
narrow in width.

7. Types
2: Quarter Turn Stairs:
• The flight of stairs when reaches the landing and turns 90°
and runs again till it reaches the horizontal level.
• Suitability:

8. Types
Bifurcated Stair:
• If a quarter turn stair is branched into two flights at a landing
is known as a Bifurcated stair.

9. Types
3: Half Turn Stairs:
• Two flights are connected by a rectangular half landing for a
180° turn.
• It may be
• (a) Dog-Legged or
• (b) Open Well Stairs

10. Types
• Circular or Spiral:
• Made in circular or spiral form
• Suitability: Where less space is available

11. Types
• Geometrical
• Continuous stairs that turn or wind about a central well hole
which has rounded corners or is circular or elliptical and that
have the strings and rails arranged upon geometric principles
and running continuously from top to bottom.

12. Terminologies
• Tread
• Riser
• Headroom
• String or Stringer
• Pitch or Slope
• Flight
• Landing
• Hand rail
• Nosing

13. Terminologies

14. THANKS
• References:
www.slideshare.net
www.elevestairs.com
www.google.com
Book: Building Construction by Arora & Gupta