What is generally the proper angle for stairs?

The proper angle for stairs is typically in the range of 30 to 35 degrees. This angle is considered optimal for both safety and comfort, allowing for a manageable incline that is less likely to cause fatigue when climbing or descending. This range ensures that the rise-to-run ratio of the stairway adheres to building codes that aim to provide accessibility and ease of use. Stairs constructed within this angle are easier for individuals of all ages to navigate and help prevent accidents caused by overly steep or shallow steps.

Stairways with angles outside of this range tend to create difficulties. For instance, angles higher than 35 degrees, such as 40 to 45 degrees, can lead to steeper stairs that require more effort to ascend and can increase the risk of slips or falls. Conversely, an angle below 30 degrees can make the stairs too shallow, potentially leading to an awkward gait and decreased efficiency in movement. Therefore, adherence to the 30 to 35-degree guideline is essential for both functionality and safety in stair construction.