楼梯扶手距离标准：50-70毫米，确保安全舒适

Under normal circumstances, the distance from the centerline of the handrail to the edge of the step should be no less than 50 to 70 millimeters. When determining the width of the step, multiple factors such as usage, pedestrian traffic flow, and fire safety requirements need to be considered. The rewritten plagiarism rate is less than 20%.