Basement Semi basement understanding.

Let's take an example.

For example, the ground plane of the basement room is meters, and the outdoor floor is meters, then the height of the ground level of the room is lower than the outdoor ground level is meters, and then the net height of the basement room is meters, then the height of the room ground level below the outdoor ground level is more than half of the net height of the room (3 5), it is the basement.

If the clear height is 7 meters, then the height of the room ground level below the outdoor ground level exceeds the clear height of the room 1 3 and does not exceed 1 2, (3 7) then it is a semi-basement.

That's how I understand it, hehe.

If the difference is the thickness of the first floor slab (indoors is higher than the exterior), then in the case you described--- the height of the room floor level below the outdoor ground level and the room clear height is a height, which is a special case, and this special case belongs to the basement.

If the height difference between indoor and outdoor is greater than the thickness of the first floor slab, the basement will gradually transition to a semi-basement as the height difference gradually increases. You just draw a profile and experience it.

In the design of the actual project, the indoor and outdoor height difference is mostly more than 300, which is easy to solve the problem of moisture-proof and waterproof, if the height difference is larger, it can be made into a semi-basement, and the lighting and ventilation of the underground space are created.

In the case of what you said, what I want to say here is that the height of the room ground level below the outdoor ground level is not fixed, (the net height is fixed) that is, 0 "The height of the room ground level is lower than the outdoor ground level" Clear height.

There are two kinds of full basement and semi-basement, semi-basement is the kind that can have windows that can be lit from the window, and the whole basement is the whole basement can not be seen like civil air defense.

The basement is divided into two types: full basement and semi-basement according to the structural form.

A basement is a room in a building that is below the ground level outdoors, and building a basement below the ground floor of the house can improve the efficiency of the building land.

The bottom elevation of the basement roof is higher than the outdoor ground elevation called semi-basement, that is, the average height of the room ground lower than the outdoor design ground is greater than the average net height of the room 1 3, and less than or equal to 1 2.

This type of basement is partly above ground level, and the lighting and ventilation problems can be solved by using the lighting wells outside the side walls.

If the bottom elevation of the basement roof is lower than the outdoor ground elevation, it is called a full basement.

Some high-rise buildings have a large foundation depth, and make full use of this depth to build basements, which has good economic and practical effects.

<> "The difference between a semi-basement and a full basement.

1. Price difference: the price of the whole basement is much more expensive than the price of the semi-basement, because the area of the semi-basement is higher than the ground, and compared with the full basement, it saves the cost of developing and digging the foundation, so the price of the semi-basement is cheaper.

2. Security difference: the whole basement is higher than the semi-basement safety factor, although the semi-basement has lighting windows and other designs, but there is a risk of theft, while the whole basement is below the ground, and the basement is rarely stolen, and the safety factor is higher. In addition, part of the semi-basement is below the ground, so it is easy to get wet and leakage, and if it is not treated well, it is easy to cause water accumulation in the house.

Second, buy semi-basement precautions.

1. Select a community where people and vehicles are diverted.

To buy a semi-basement house, you should choose a community where people and vehicles are separated, as long as the vehicle is not driving on the ground. The semi-basement will not worry about noise pollution and dust pollution of vehicles, and it will be much safer to travel.

2. Choose a property to serve the community.

Semi-basement may have personal and property safety problems, so special attention should be paid to the purchase of high-quality formal community environment and property management can completely solve the problem, personnel in and out of strict control, and 24-hour monitoring and patrol, then the safety factor will be greatly improved.

3. Choose a small area with a large spacing between buildings.

The spacing between the buildings is large, and the lighting effect is better, otherwise the spacing between the buildings is too small, and it will be blocked by other houses, especially the units with semi-basements.

1. Semi-basement advantages: compared with other floors on the ground, it is cheaper, and the residence is warm in winter and cool in summer.

2. Semi-basement disadvantages: the environment is too humid, the light is poor, and the sunlight is almost invisible.

What are the precautions for buying a semi-basement.

1. Choose a community where people and vehicles are separated.

If you want to buy a house on the first floor, then you have to choose a community where people and vehicles are separated, and now most residents have their own private cars, and the community must do the separation of people and vehicles, and the vehicles do not drive on the ground. In this way, the residents on the first floor will not be exposed to noise pollution and dust pollution from vehicles. And it will be much safer to travel.

2. Choose a community with good property services.

In addition to poor ventilation and lighting, there may also be personal and property safety problems in the house on the first floor, and a good community environment and property management can completely solve this problem. If the safety management of the community is standardized, the entry and exit of personnel is strictly controlled, and there is 24-hour monitoring and patrolling, then the safety factor of the first-floor residence will be greatly increased.

3. Choose a residential area with a large spacing between buildings.

The spacing between the buildings will naturally be better, so that you don't have to worry about being blocked by other houses, especially the house with a semi-basement.

4. Check the drainage.

The drainage problem of the basement is very important, and when looking at the house, we should pay attention to whether there is water seepage on the roof and wall; Whether the ground has been blistered. Although the semi-basement is low but the living experience is poor, buyers need to consider all kinds of problems that may arise when buying for self-residence, and be cautious.

5. Check the real estate certificate.

As with above-ground buildings, only semi-basements with title deeds can be traded. The floor of the title deed is generally shown as -1 floor. If you buy a semi-underground buyer without a title deed, the rights and interests of the buyer are not guaranteed.

There may be two situations without a title deed: one is that the semi-basement is an area gifted by the developer and is not recorded in the title deed. If the seller only provides a simple proof of purchase, it is not possible to prove the ownership of the semi-basement.

The other is if it is a semi-basement of a public house, the property right is generally public, and the seller may only have the right to use it, but not the right to use it.