Architecture III

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Architecture III

• Stair Design and Construction
• 3/09

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Stair Design and Construction

• Key Terms
• Baluster
• Curtail
• Guardrail
• Handrail
• Headroom
• Kick Plate
• Landing
• Newel

• Nosing
• Rise
• Riser
• Run
• Stringer
• Tread
• Well Hole

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Stair Design and Construction
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Stair Design and Construction
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Stair Design and Construction

1. Inner string (closed)
2. Outer string (open)
3. Tread
4. Riser
5. Newel post
6. Balusters
7. Banister / Handrail
8. Return nosing
9. Fascia
10. Landing
11. Curtail

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Stair Design and Construction

• Stair Types
• Straight
• L- Shaped Stairs
• Double L Stairs
• U- Shaped Stairs
• Winder
• Spiral

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Stair Design and Construction
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Stair Design and Construction

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Stair Design and Construction

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Stair Design and Construction

• Winder Stairs
• vs.
• L Shaped Stairs

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Stair Design and Construction

• 4 Rules of Stairs
• The slope of stairs should be between 30 - 35 (
  S 30 - 35)
• The sum of two risers and one tread should equal
  25 (2R T 25)
• The product of the riser height multiplied by the
  tread width should equal approximately 75 (R x T
  75)
• The sum of one riser plus one tread should equal
  17 18 (R T 17-18)