Introduction of national regulations on slotting of load-bearing walls

In home decoration, we all want to decorate our home beautifully, but one thing has always been a problem that we can't ignore-safety. I don't like the layout of the house I bought. Usually we choose to slot the wall. Do you know if we can slot the load-bearing wall? The following small series will introduce you to the national regulations on slotting of load-bearing walls:

First, the taboo of slotted load-bearing wall

1. The load-bearing wall cannot be dismantled.

The load-bearing wall cannot be removed during the decoration process. What is a load-bearing wall? Generally, in a building with brick-concrete structure, all prefabricated walls can't be removed. Brick walls over 24 cm are also load-bearing walls and cannot be demolished. Most of the walls with "empty sound" are non-bearing walls and can be demolished and changed. Some engineering teams open doors and windows on the load-bearing wall, which will also damage the load-bearing of the wall and is not allowed. Before construction, it must be reported to the property management department for the record, and construction can only be started after approval.

2. Bearing beams and columns cannot be disassembled.

These beams and columns are used to support the upper floor, which will fall down after being demolished, which is very dangerous and is not allowed to be demolished at will.

3, the reinforcement in the wall

If the building structure is compared to an adult's body, the steel bars in the wall are human bones and muscles. When laying grooves, avoid reinforcing bars, and it is best not to cross cut. If the steel bar is damaged when laying the pipeline, it will affect the bearing capacity of the wall and floor. If there is an earthquake, such walls and floors will easily collapse or break.

4. The low wall beside the balcony cannot be removed.

There is a door and a window between the room and the balcony. These doors and windows can be removed and replaced, but the wall under the window can't be moved. This section of the wall is called the "counterweight wall", which plays the role of supporting the balcony like a heavy object. Demolition and alteration of this wall will reduce the bearing capacity of the balcony, lead to the balcony falling, and cause unpredictable consequences. The door frame of the "three-proof" or "five-proof" door is embedded in concrete. If they are removed, it will destroy the building structure and reduce the safety factor. But also destroyed the building structure at the entrance and increased the difficulty of reinstalling new doors.

5, bathroom and kitchen waterproof layer

These places have waterproof layers underground. If they are destroyed, the downstairs will become "water curtain cave". So when you replace the floor material, you must be careful not to destroy the waterproof layer. If it is rebuilt after destruction, it must be waterproof again. After "24-hour infiltration test", no water leakage is qualified.

Second, the harm of slotted load-bearing wall

1, digging holes in the load-bearing wall will weaken the resistance section of masonry, reduce the bearing capacity of masonry and reduce the safety performance of the house; In addition, when slotting and drilling holes, whether by hand or with an impact electric drill, the wall will vibrate greatly, which will loosen the mortar joint and destroy the bond between mortar and brick or hollow block, thus reducing the shear and compressive strength of masonry.

2. If you must slot the strange wall, the load-bearing wall should not exceed 30 cm and the non-load-bearing wall should not exceed 50 cm, otherwise it will easily cause the wall to crack. At present, the shear wall bears a great parallel force, and it is most afraid of this kind of transverse slot. Ordinary vertical pressure can also cause cracks in the wall, and once an earthquake occurs, large lateral tension is even more terrible. If a transverse trench with a depth of 5cm and a length of 3m is dug in the load-bearing wall, its harm is equivalent to tearing down the whole load-bearing wall with a width of1m. Any form of damage to the load-bearing structure will reduce the seismic performance of the ground floor building. To make an inappropriate analogy, for example, a piece of intact glass should not be fragile if it has a certain thickness. However, if you draw a mark on the glass with a diamond, the glass will break along the mark. Slotted load-bearing walls, like glass scratched by diamonds, are easily broken when encountering strong earthquakes.

Through the above introduction, we can see that it is not advisable to slot the load-bearing wall when decorating the home. Although in modern decoration, many consumers will slot the wall for the convenience of wiring, it is open to question to slot the load-bearing wall. Therefore, Bian Xiao suggested that friends should not slot the load-bearing wall for the safety of themselves and others.