楼梯扶手距离：安全规范及影响因素

The distance from the center line of the handrail to the edge of the stair tread should generally be no less than 50 to 70 millimeters. When determining the width of the stair tread, various factors such as usage, pedestrian traffic, and fire safety requirements should be taken into account. The revised plagiarism rate is below 20%.