According to Occupational Safety and Health Administration (OSHA) requirements in the U.S., the majority of stair handrails must be between 30 and 37 inches in height. The measurement is from the... According to Occupational Safety and Health Administration (OSHA) requirements in the U.S., the majority of stair handrails must be between 30 and 37 inches in height. The measurement is from the... Star Gazing