Carpentry for Vocational Schools - A Teachers Handbook
 23. STAIRS
 (introduction...) 23.1. Technical terms of a stair 23.2. Parts of a stair 23.3. Calculating the number and size of steps 23.4. Calculating the width of the stringers 23.5. Marking out stringers 23.6. Marking out top and bottom end of stringers 23.7. Joining and assembling stairs 23.8. Fixing stairs 23.9. External stairs 23.10. Concrete stairs

### 23.1. Technical terms of a stair

a) Stringer: - The inclined sides of the stair carrying the steps.

b) Riser: - The vertical timber which closes the space between two steps.

c) Rise: - It is the vertical distance between the top of the one tread and the top of the tread immediately above it. Usually 175 mm.

d) Tread: - The board forming the top-surface upon which the foot is placed.

e) Go or Going: - The horizontal distance between the face of one riser and the face of the next. Usually 250 mm.

f) Nosing: - The rounded edge of the tread projecting over the riser. Usually 20 mm.

g) Landing: - The floor at the beginning or the end of a stair flight and the intermediate floor between two flights.

h) Well or Well-hole: - The space in the centre of a staircase between the outer stringers of the flight.

i) Flight: - A complete set of stairs reaching from floor to floor or from floor to a landing.

j) Newel: - An upright post at each end of a flight of stairs to carry the handrails and sometimes also the stringers.

k) Handrail: - The support for the hands at the sides of the stair.