Ladder rungs should be spaced evenly and typically between 10 and 14 inches (approximately 250-350 mm) apart. This spacing ensures safe and comfortable climbing according to safety standards such as OSHA in the U.S. and EN131 in Europe. The spacing must be consistent throughout the ladder, with very minimal variation, usually no more than 2 mm difference between rungs, to avoid awkward and unsafe climbing conditions.
Key Points on Ladder Rung Spacing
- The common and recommended spacing is about 10-14 inches (25-35 cm) center-to-center between the rungs.
- European EN131 standards specify a rung spacing range from 225 mm to 350 mm (9-14 inches), emphasizing consistency.
- OSHA regulations in the U.S. specify a rung spacing minimum of 10 inches and maximum of 14 inches.
- Consistent spacing is critical for safe climbing; spacing variation should be minimal (2 mm max).
- The bottom rung spacing to the ground/platform should be close to the rung-to-rung spacing (90-100% of the rung spacing) for compliance.
Thus, ladder rungs should generally be spaced between 10 and 14 inches apart, evenly and consistently throughout the ladder.
