DIY Stair Layout Calculator
Here’s a comprehensive table summarizing the key information you need to know for DIY stair layout:
| Aspect | Measurement/Requirement |
|---|---|
| Max Rise (inches) | 8.25 |
| Min Run (inches) | 10 |
| Pitch (degrees) | 42 (maximum) 4 |
| Handrail Height (inches) | 36 |
| Nosing (inches) | 3/4 to 1.25 |
| Landing Required | After 15 steps 1 |
| Materials | Timber, Concrete, Metal |
| Safety Standards | Follow local building codes |
| Ideal Stair Formula | 2 Risers + 1 Tread = 63-65 cm 1 |
| Min Stair Width (residential) | 80 cm 1 |
| Min Stair Width (public) | > 100 cm 1 |
| Min Headroom | 2.15 meters (2.00 meters minimum) 1 |
| Tread Overhang | 3/4 in. minimum, 1-1/4 in. maximum 2 |
| Max Riser Variation | 3/8 in. over entire stair 2 |
| Stringer Material | 2×12 lumber (common) 2 |
| UK Max Step Height (general) | 170 mm 4 |
| UK Max Step Height (utility) | 190 mm 4 |
| UK Max Step Height (private) | 220 mm 4 |
| UK Min Step Going | 220 mm 45 |
| UK Min Headroom | 2,000 mm 45 |
This table provides a quick reference for the most important aspects of stair layout, including maximum rise, minimum run, pitch, handrail requirements, and various other measurements and standards. It combines information from multiple sources to give you a comprehensive overview of what you need to know for DIY stair layout.
Remember that while these are general guidelines, it’s crucial to consult your local building codes and regulations, as they may have specific requirements that differ from these general standards. Always prioritize safety and compliance when designing and constructing stairs.