The surface deviation of the shear wall is poor, is there a clear treatment provision in the specifi

When we accept a new house, Xun Yuanshi can often see that some professional personnel will use a ruler to check the flatness of the wall and so on. It is inevitable that there will be some deviations when the developer builds the house, and what is the allowable deviation of the flatness of the shear wall according to the relevant national regulations? Next, I will briefly introduce it to you.

1. According to the relevant provisions and standards in the construction quality acceptance specifications for concrete structure projects, the shear wall belongs to the cast-in-place structure, and the allowable deviation of its surface flatness is 8mm. Generally, we use a 2-meter ruler to check the flatness of the wall, and the ruler is horizontal, longitudinal, and obliquely attached to the wall, and the flatness of the wall is detected according to the reading ruler on the detection ruler, and the flatness deviation of the 2-meter ruler is not more than 3mm according to national regulations.

2. When you check the flatness of the wall, you can also use high-power bulbs to irradiate, and whether the wall and ceiling are flat can be seen through the shadow of the light. When we inspect the wall, in addition to looking at the flatness of the wall, we also need to see whether the wall has problems such as hollowing and water leakage. You can use the telescopic drum hammer to gently tap the wall, and judge whether there is a hollow drum on the wall through the sound.

3. Accept whether there is a water leakage problem on the wall, it is best to choose to check the next day after the heavy rain, we carefully observe the wall, especially near the window sill, the top surface of the kitchen and bathroom, etc. Whether there is color difference, cracking and other problems on the wall can usually be seen directly.

4. When we accept the house, we also need to check whether the indoor floor height meets the standard, whether there is water accumulation on the ground, whether there is deflection in the reserved doors and windows, whether the indoor drainage is smooth, etc. The acceptance of the new house is very important, and it is best to ask a professional to help with the acceptance.

I summarize: What is the allowable deviation of the flatness of the shear wall, I will briefly introduce it to you here. I hope that after reading this article, you will be able to understand the allowable deviation of the flatness of the shear wall.

The surface deviation of the stairwell shear wall is larger, and now the decoration construction should be carried out, and the thickest part of the wall deviation is 5 7cm, and the load on the thinnest platform should be evenly distributed, so as to ensure the horizontality of the platform and the verticality of the sliding frame when the sliding frame rises.

Shear wall about expansion.

Shear wall is also known as wind-resistant wall, seismic wall, or structural wall. Walls in houses or structures that are mainly subjected to horizontal and vertical loads (gravity) caused by wind loads or ** actions to prevent structural shear (shear) damage.

It is divided into plane shear wall and cylinder shear wall. Plane shear walls are used in reinforced concrete frame structures, rising plate structures, and beamless floor systems. In order to increase the stiffness, strength and collapse resistance of the structure, reinforced concrete shear walls can be cast in situ or prefabricated in some parts.

The cast-in-situ shear wall is poured at the same time with the surrounding beams and columns, and the integrity is good. Cylinder shear wall is used in high-rise buildings, high-rise structures and suspension structures, surrounded by the partition wall of elevator room, stairwell, equipment and auxiliary room, the cylinder wall is cast-in-place reinforced concrete wall, and its stiffness and strength are higher than the plane shear wall and can bear large horizontal load.

According to the stress characteristics, the wall can be divided into load-bearing wall and shear wall, the former is mainly to bear vertical load, such as masonry wall; The latter is dominated by horizontal loads. In the seismic fortification area, the horizontal load is mainly generated by the horizontal ** action, so the shear wall is sometimes called the seismic wall.

Shear wall[1] can be divided into steel plate shear wall, reinforced concrete shear wall and reinforced block shear wall according to the structural material. Among them, reinforced concrete shear walls are the most commonly used.

It was solved when it was painted, and now there is no way, the axis cannot be moved.

The excess is chiseled off, and the insufficient must be replaced.

The shear wall plays a very large role in the whole building, which mainly plays a role in supporting the gravity of the building and avoiding safety problems, but the verticality of the shear wall should be done. So is the permissible deviation of the verticality of the shear wall, and what should be paid attention to in the construction of the shear wall, do you know it? Now let's dress up Zheng and take a look.

1. Is the permissible deviation of the verticality of the shear wall?

The perpendicularity of the shear wall is allowed to deviate, but its deviation value must be within a certain range, otherwise it will bring different degrees of danger. If the height of the shear wall is less than 5 m, then the allowable deviation is within 6 mm, and if the height is greater than 5 m, the allowable error is within 8 mm.

Second, what should be paid attention to in the construction of shear wall.

1. In the process of arranging the shear wall, it is necessary to try to carry out two-way arrangement as much as possible, and avoid the absence of a single item, so as to play the role of the shear wall, and the load-bearing capacity will be greatly strengthened. Moreover, the arrangement of the shear wall should be as uniform as possible, and the number should meet the requirements, so that the side stiffness becomes stronger and the seismic resistance increases.

2. When designing the shear wall, it is necessary to keep the vertical stiffness uniform, and the doors and windows on the shear wall are facing each other, so as to create a more definite connecting beam wall limb. In addition, the bottom of the shear wall belongs to the strengthened position, so the door opening can not be opened here, otherwise it is easy to cause the seismic capacity of the shear wall to be reduced.

3. In the process of daily hall decoration, it is necessary to prevent the shear wall from being damaged as much as possible. If the shear wall is relatively long, then you can open the door on it and divide it into several wall segments, and use weak beams to connect these wall segments, but make sure that the length of the independent wall segments is more than twice the length of the cross-section.

Regarding the allowable deviation of the verticality of the shear wall, and what should be paid attention to in the construction of the shear wall, it is introduced here first, do you understand it? When the shear wall is built, it is necessary to ensure a number of small details, so as to prevent safety problems and ensure that it can be used normally in the later stage.