Calculate stair stringer dimensions for safe and compliant stair construction
Stair stringers are the structural members that support the treads and risers of a staircase. Proper calculation of stringer dimensions is crucial for ensuring the stability and safety of the stair construction. The primary factors in these calculations include total rise, total run, number of steps, and individual riser and tread dimensions.
The International Residential Code (IRC) and other building standards provide guidelines for these calculations. For instance, the IRC specifies that riser heights should be between 4 and 7 inches (102 to 178 mm), and tread depths should be at least 11 inches (279 mm) [1]. The slope of the stair stringer is determined by the ratio of the total rise to the total run, which typically shouldn't exceed 1:1 for standard stairs.
Our Stair Stringer Calculator simplifies this process by allowing you to input key parameters and receive instant calculations for critical dimensions. It considers various factors such as building code requirements and material specifications to provide accurate results.
| Total Rise (inches) | Total Run (inches) | Number of Steps | Riser Height (inches) | Tread Depth (inches) |
|---|---|---|---|---|
| 60 | 120 | 10 | 6 | 12 |
| 72 | 132 | 12 | 6 | 11 |