楼梯扶手距离规范：50-70毫米安全距离

In general, the distance from the center line of the handrail to the edge of the tread should be no less than 50 to 70 millimeters. When determining the width of the 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%.