Understanding Stair Railing Requirements
Stair railings must meet specific building code requirements for safety and accessibility.
- Height Requirements Handrail height must be 34-38 inches above stair nosing.
- Graspability Handrail circumference must allow proper grip (4-6.25 inches).
- Clearance Minimum 1.5 inches clearance from wall required.
Stair Geometry
- Rise and Run Standard rise: 4-8 inches, run: 9-14 inches.
- Angle Calculation Typical stair angles range from 30-37 degrees.
- Landing Requirements Required after maximum rise of 12 feet.
Installation Guidelines
- Mounting Options Post, wall, or fascia mounting based on stair design.
- Structural Support Proper blocking and anchoring essential.
- Termination Points Proper returns and extensions at top and bottom.