The video highlights several issues that can occur due to inaccurate tread depth measurements, especially when the landing is not perfectly level.
Reduced Headroom Clearance: Longer treads, even if they maintain the same overall rise, can lead to reduced headroom clearance between the top of the stairs and the ceiling. This is because the increased horizontal length of the treads brings the top of the stair closer to the ceiling.
Difficulty Navigating Stairs: Longer treads can make it more difficult to navigate the stairs, especially for taller individuals or those carrying large objects. This can lead to people bumping their heads on the ceiling or tripping over their own feet.
Non-Compliance with Building Codes: Most building codes have specific regulations regarding minimum headroom clearance for stairs. If longer treads reduce the headroom below the required minimum, the stairs may not be approved by building inspectors.
Solutions and Best Practices
Double-Check Headroom Clearance: Before installing the stringer, confirm that there is sufficient headroom clearance for the stair tread depth you are planning to use.
Plan for Headroom Clearance: Factor in the thickness of the tread, riser, and any additional materials (carpet, padding) when calculating the required headroom clearance.
Minimize Tread Depth: If possible, use a shorter tread depth to maximize headroom.
Verify Building Code Compliance: Consult with a building inspector to ensure that your stair design complies with local building codes for headroom clearance.
