楼梯扶手距离和踏步宽度确定指南

The centerline of the handrail should generally be at a distance of 50 to 70 millimeters from the edge of the stair tread. When determining the width of the stair tread, various factors such as usage, pedestrian traffic, and fire safety requirements need to be taken into consideration. The revised plagiarism rate is less than 20%.