Basic Parameters
Comprehensive Parameters
Calculation Results
Stair Visualization
Stair Terminology & Building Codes
Stairs come in many different forms, and while building a basic staircase may appear to be a simple task, there are actually a number of parameters, calculations, and building codes that must be considered.
Key Terminology:
Run/Tread: The part of the stairway that a person steps on. Building codes generally suggest a minimum length of 25.4 cm.
Rise/Riser: The height of a step measured from one tread to the next. Maximum height is typically 19.7 cm.
Nosing: The protrusion at the edge of a tread. Typically 1.9 cm to 3.2 cm.
Headroom: Height from tread to ceiling above. Minimum is usually 203.2 cm.
Stair Width: Minimum width is typically 91.44 cm excluding handrails.
Handrails & Guards: Required when total rise > 76.2 cm. Height between 86.36 cm and 96.52 cm.
Fraction to Decimal Conversion
| 16th | 8th | 4th | 2nd | Decimal |
|---|---|---|---|---|
| 1/16 | 0.0625 | |||
| 2/16 | 1/8 | 0.125 | ||
| 3/16 | 0.1875 | |||
| 4/16 | 2/8 | 1/4 | 0.25 | |
| 5/16 | 0.3125 | |||
| 6/16 | 3/8 | 0.375 | ||
| 7/16 | 0.4375 | |||
| 8/16 | 4/8 | 2/4 | 1/2 | 0.5 |
| 9/16 | 0.5625 | |||
| 10/16 | 5/8 | 0.625 | ||
| 11/16 | 0.6875 | |||
| 12/16 | 6/8 | 3/4 | 0.75 | |
| 13/16 | 0.8125 | |||
| 14/16 | 7/8 | 0.875 | ||
| 15/16 | 0.9375 | |||
| 16/16 | 8/8 | 4/4 | 2/2 | 1 |
MATH CALCULATOR’S
Math Calculators To perform basic calculations, use the basic math calculator or one of the calculators listed below. Scientific Calculator Fraction Calculator Percentage Calculator Random
ALL CALCULATOR’S
Math Calculators To perform basic calculations, use the basic math calculator or one of the calculators listed below. Scientific Calculator Fraction Calculator Percentage Calculator Random
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