Installation technology of prefabricated stairs

What are the precautions in the process of stair installation? The design and installation of staircase is as important as the decoration of living room, especially for duplex and duplex apartment, the decoration design directly affects the beauty of the whole room. So, what are the precautions in the process of stair installation? The following small series will take you to know more about this knowledge!

Precautions 1. Communicate with the property.

Reportedly, the stairs of duplex and duplex apartments can be removed and changed, while the stairs of single-system and split-level houses cannot be removed and changed at will. However, no matter what kind of residential structure, when removing the original building components, we must first say hello to the property department.

Note: 2. Communicate with manufacturers

It is very important to communicate with the stair designer and ask about the preliminary stair plan before installing the stairs and before the overall decoration, because the stairs should be coordinated with the overall decoration, such as style, material and slope. Should be considered in advance. Don't think that you can reinstall the stairs after decorating them. In addition, manufacturers usually have a production cycle of 30 to 40 days.

Note 3. Measurement and design

Engineers or decoration designers should go to the door to measure and collect the technical data of all stair openings. If the finished staircase is selected, the designer of the manufacturer should communicate with the designer of the decoration company on the spot to determine the scheme. The designer drew a plane color effect picture.

Precautions. sign a bill

After the design scheme of stairs is finalized, consumers can sign an order confirmation with the manufacturer and pay the advance payment.

Precautions. Stair assembly

Finished stairs are generally parts and can be assembled at home. In the past, the decoration of stairs relied on on on-site construction, which not only had a large amount of work, but also was difficult to control the quality. The stairs processed by the factory not only ensure the quality, but also enrich the shape. The advantages are faster and more convenient construction and installation. As long as the stair style is selected at the beginning of interior design and the opening of the floor hole is determined, the decoration scheme can be carried out with confidence. This installation requires only two workers, ranging from a few hours to three days. Sometimes even non-professionals can complete the assembly quickly by referring to the assembly drawing. In fact, in foreign countries, people mostly complete the installation of stairs through DIY. If the standardized stair parts are damaged, it is also convenient for maintenance and replacement. These characteristics are very suitable for duplex houses and villas.

Precautions. after-sales service

For finished stairs, after installation, the manufacturer shall provide after-sales service card, product certificate and instruction manual. In addition, many manufacturers will provide supporting tools in the future to facilitate daily use.

The above are the matters needing attention in the process of stair installation that Bian Xiao shared for you. I hope it helps you. If you want to know more about stair installation, please pay attention.

Stair design code requirements Stair design code requirements

1, Code for Design of Stairs in Civil Buildings:

1) The number, location, width and stairwell form of stairs should meet the requirements of convenient use and safe evacuation.

2) The horizontal distance from the wall to the center line of the handrail or the center line of the handrail, that is, the width of the stair flight, should not only comply with the provisions of the fire protection code, but also be determined according to the use characteristics of the building and the number of people in each stream of 0.55+(0-0. 15)m, which should not be less than two people. 0-0. 15m is the posture of human body during exercise, and the upper limit should be taken in crowded places in public buildings.

Explain in the general design rules:

In the code for fire protection, the width of stair flight is 0.55m for each pedestrian flow, and the small width of two pedestrian flows is not less than 1. 10m, which is suitable for evacuation stairs, but not completely suitable for stairs used for traffic at ordinary times, especially the main stairs of public buildings with dense crowds (such as shopping malls, theaters, gymnasiums, etc.). ), so it is necessary to consider multiple people passing through, so that vertical traffic will not cause congestion and congestion. In this way, the width of people flow is a small value calculated by 0.55m m. In fact, the human body has a certain swing and a gap between them when traveling. Therefore, this article stipulates that the flow per person is 0.55m+(0-0. 15)m, and when there are many people, 0-0. 15m is the added value. The width of the stairs for a single person needs to be appropriately increased.

3) When the steps change direction, the small width of the platform at the turning end of the handrail should not be less than the width of the steps, and should not be less than1.20m. When large objects need to be transported, it should be widened appropriately.

4) The step distance of each flight should not exceed 18 and should not be less than 3.

5) The clear height of the upper and lower aisles of the landing should not be less than 2m, and the clear height of the landing should not be less than 2.20m

Note: The clear height of the step is the vertical height measured from the front edge of the step (including within 0.30m from the front edge of the first step) to the lower edge of the upper protrusion.

6) Stairs shall be provided with handrails on at least one side. When the clear width of stairs reaches three people, handrails shall be provided on both sides. When it reaches four people, middle handrails shall be added.

7) The height of the inner stair handrail should not be less than 0.90m from the front line of the steps. When the length of the horizontal handrail near the stairwell exceeds 0.50m, its height should not be less than1.05m.

8) Anti-skid measures should be taken when stepping.

9) When the clear width of stairs and stairwells in nurseries, kindergartens, primary and secondary schools and children's special activities places is less than 0.20m, measures must be taken to prevent children from climbing and sliding. Stair handrails should adopt structures that are not easy to climb. When vertical poles are used as railings, the clear distance between bars should not be greater than 0.11m.

2, high-rise building stairs design standards and specifications:

For those with more than eighteen floors, each unit is provided with an evacuation staircase leading to the roof, and the stairs of adjacent units with more than eighteen floors are connected by balconies or recessed corridors (the roofs may not be connected). Firewalls are installed between some units on the 18th floor and below, and the doors are Class A fire doors. The width of the window wall and the height of the windowsill wall are greater than 1.2m, which is a unit house with incombustible walls.

Each unit on 18 floor and below is provided with evacuation stairs leading to the roof, and the stairs between units are connected through the roof. Firewalls are installed between units, and the doors are Class A fire doors. The width of the window wall and the height of the sill wall are greater than 1.2m, and it is a unit residence without burning body wall.

Outdoor stairs can be used as auxiliary smoke-proof stairs, and their small clear width should not be less than 0.90m m. When the inclination angle is not more than 450. When the height of handrails is not less than 1. 10m, the width of outdoor stairs can be included in the total width of evacuation stairs. Outdoor stairs and platforms at the exit of each floor should be made of incombustible materials. The fire resistance limit of the platform should not be lower than1.00h. No other doors, windows and holes should be opened on the wall within 2.00m around the stairs except the evacuation door. Evacuation doors should be Class B fire doors and should not face the stairs.