(1) Ordinary stairs should be provided with at least one handrail, two handrails when the staircase is wide enough to accommodate three people, and a middle handrail when the staircase can accommodate four people;

(2) The height of indoor stair handrail should not be less than 90cm, and when the length of handrail near stairwell is more than 50cm, the height of handrail should not be less than100 cm;

(3) The minimum width of the handrail of the stair slewing platform should not be less than 120cm.

Matters needing attention in stair design

1. Stairs connect the main passages of the upper and lower floors, and the design must be reasonable. According to experts from Qijia. Com, the stair step height is 15 to 18 cm, which is convenient for walking, and the pedal width is suggested to be between 22 and 22-28cm.

2. From the architectural point of view, stairs can easily become the focus of vision in the whole decoration, so the design should be decided according to actual needs and personal preferences. For example, a small apartment can choose a spiral staircase with beautiful style and small floor space.

3. The gradient of stairs is also a point that must be paid attention to when designing stairs. The car is mainly decided according to the situation of family members. If there are old people and children at home, the slope of the stairs should be reduced appropriately, and the width of the pedals should be as wide as possible, so it will be more convenient to go up and down the stairs.