Generally, families decorate houses with design styles, but the most important thing is to look at the apartment type. Now, the most popular house is the one with stairs inside. Such houses are usually villas or duplex buildings, but the design of stairs requires skill. What is the manufacturing standard of stair handrails? What is the general step size of stair making? Let's introduce it to everyone.

A, stair handrail specifications

1. The height of stairs in airports such as balconies and verandahs should exceed the height of the center of gravity of the human body, so as to avoid falling when the center of gravity moves outward. It is stipulated that the stair height below 24m (equivalent to the height of low-rise and multi-storey buildings) should not be less than 1.05m, and the stair height above 24m (equivalent to the height of high-rise and middle-high-rise residential buildings) should not be less than 1. 10m. For high-rise buildings, there will be fear from the air, so it will be raised to 1.65438.

2. Stairs in residential buildings, nurseries, kindergartens, middle schools and children's special activity places must prevent children from climbing. When vertical poles are used as stairs, the clear distance between poles should not be greater than 0.11m. The decoration height of indoor stairs is 90cm, but this data can be changed according to the actual situation. When the length of stairs exceeds 5 meters, the height of stair handrails can be appropriately increased to 100cm. In addition, if there are children at home, for the sake of safety, it is best to set the height of the stair handrail to 100cm.

Second, the stair production step size

1. Determine the slope: according to the nature of the building, the plane position of the stairs and the size of the stairwell, determine the size form and appropriate slope of the stairs. Initially determine the step width b and the step height h (note: b≮bminh≯hmax, bmin and hmax are the step width and height of various buildings respectively. )

2. Determine the width: determine the stair width B and the stair width according to the stair bay size. Determine the curse of the ladder series, adjust the ladder height and the ladder width b, divide the ladder height h by h to get the ladder series n≈H/h, take an integer when it is considered as a decimal, adjust the ladder height h(h≈H/n), and determine the ladder with the formula b+h=450(mm) or b+2h = 600 ~ 620 (mm). Determine the width of the platform. Note (step size). According to the width b of the step and the number of steps, the horizontal projection length l of the step is determined.

3. Basic parameters: the size of each part of the stairs is determined according to the opening and depth of the stairwell, the height and width of each stair step, the length and width of the steps and the width of the platform. (Note: The steps on each floor of the double-run stairs are even, so the steps of the two runs are equal. )

4. Sketch: According to the above dimensions, draw the floor plan of the bottom floor, the second floor and the top floor of the stairs. Determine the structure and structural form of stairs, determine whether the stairs are cast-in-place or prefabricated, whether the steps are slab or beam slab, and the support mode of platform slab.

Nowadays, many houses have indoor staircase design, but it takes skill to design stairs. So what are the specifications and step sizes of stair handrails? You all know after reading the introduction above.