Is the basement floor the foundation floor? What are the differences between the basement floor and the raft?

Today's high-rise buildings generally have basements, but the structure of the basement is very unfamiliar, such as the basement floor. Let's join the editor to learn more about whether the basement floor is the foundation floor. By the way, let's talk about where the basement roof and floor are and the difference between the basement floor and the raft.

1. Is the basement floor a foundation floor?

1. Is the basement floor a foundation floor? The basement floor is a foundation project. The beams on the basement floor are not called floor beams, but should be called basement floor beams. The main raw materials for making concrete beams and slabs are as follows: sand, water, cement, steel and additives.

2. With the continuous development of my country's economy, the scale of construction projects continues to expand. As an important part of building construction, the application range of concrete is becoming increasingly widespread. During the concrete pouring process, due to the influence of many internal and external environmental factors, concrete beams and slabs are prone to cracks of various degrees. Although subtle concrete cracks have no major impact on the safety and quality of the project, if obvious cracks appear on the beams and slabs, Cracks will cause various quality problems, such as water seepage, collapse, etc., which will cause long-term harm to the function and life of the building project.

2. Where do the basement roof and floor refer to?

1. Where do the basement roof and floor refer to? The basement roof is equivalent to the bottom plate of the first floor, and the basement floor is equivalent to the foundation bottom plate. Generally speaking, the bottom plate specifically refers to the ground of the lower layer (reinforced concrete cast-in-place floor). The other floors are generally referred to as floor slabs.

2. The basement is a room in a building below the outdoor ground. The foundations of some high-rise buildings are buried deep. Making full use of this depth to build basements has good economic and practical effects. According to structural materials, there are brick wall structure and concrete structure basement.

3. In the past, the elevation of the basement building surface was only 50mm higher than the structural surface, that is, the elevation difference between the building surface and the structural surface was only 50mm. Therefore, special attention should be paid to this elevation issue during construction, such as: door height, switch socket height, civil air defense door, equipment foundation elevation, etc. The roof slab and basement floor have different stress-bearing and structural reinforcements, so the raft foundation quota applies.

3. The difference between basement floor and raft board

1. There is a big difference between basement floor and raft board. The basement floor can be called foundation floor. The basement floor includes raft foundation. Independent foundation waterproofing board can also be called basement floor.

2. The raft is composed of a bottom plate, beams, etc. The load of the building is large and the bearing capacity of the foundation is weak. Concrete bottom plates are often used to bear the load of the building and form a raft foundation. It has good integrity and can well resist uneven settlement of the foundation.

3. The base plate generally refers to a waterproof board or a moisture-proof board, which is not subject to the reaction force of the foundation. It is equivalent to a floor slab, but sometimes it is subject to water buoyancy.

4. Structurally speaking, the raft is a stress-bearing member, and the water-resistant board is a waterproof structural member.

5. The raft must bear the load of the entire building and then be transferred to the foundation; the water-resistant board generally only plays a waterproof role and only needs structural reinforcement. The load of the entire building depends on the independent foundation, Strip foundations or other foundations are borne and then passed to the foundation.

6. The two have different stress mechanisms and different reinforcement amounts. Generally, the rafts are thicker and come in the form of plate type and mantanghong foundation, while the water-resistant boards are slightly thinner. There must be other foundation forms to bear the load.

7. Raft is also a type of extended foundation. It is generally used in high-rise frame, frame shear, and shear wall structures. When the strip foundation cannot meet the foundation bearing capacity requirements, or when the building The foundation is required to have sufficient stiffness to accommodate uneven settlement.

The above is the relevant content about whether the basement floor is the foundation floor, where the basement roof and floor refer to, and the difference between the basement floor and the raft. I hope it can be helpful to everyone!