Stair composition:

1. staircase

The number of steps on each stairway shall exceed 18 be less than 3.

2. Stair platform

The landing is divided into floor platform intermediate platform according to its location.

3. Handrail (board) handrail

Handrail (handrail) is the enclosure component set in the flight side of stair section platform, which should have certain strength rigidity, handrail for people's hand support should be set in the upper part. The handrail is a continuous accessory set on the top of the handrail for people to lean up down stairs.

4. General Post

The starting large column at the beginning of stair railing is generally one size larger than the large column.

5. pillars

At the corner of the handrail, it is a large column that can undertake two handrails finish the handrail.

6. pedal

The lower panel on the stairs is generally 38mm thick on the whole 30mm thick on the cement ladder.