Waterproof grade can be imagined as the division of waterproof protection grade. Waterproofing is mainly aimed at some buildings and instruments. Of course, the waterproof level needs to consider mainly what loss will be caused by poor waterproof, whether it is economic loss or personal injury, and what damage will be caused to the use and appearance of the building after water leakage.
How to classify the waterproof grade of buildings?
The waterproof grade of a building is not designed at will, but determined by professionals according to the nature, importance and specific use function of the building. There are two main types of waterproofing in building engineering, one is the waterproofing grade of underground engineering and the other is the waterproofing grade of roof engineering.
The waterproof level of underground is divided into four levels: the first level is that there is no water on the surface of the structure and water seepage is not allowed; The second stage is that the surface can have a little wet stains, but it can't leak; In the third stage, there may be a small amount of water leakage, but no water leakage, line and sediment; There can be water leakage points in the fourth stage, but there can be no water leakage or sediment leakage in one line.
Roofing works have two levels of waterproofing. The first-class buildings are mainly some important buildings and high-rise buildings. The requirement of this waterproof fortification is to have two waterproof fortifications; Class II buildings are general buildings, and the fortification requirements are waterproof facilities.
What is the waterproof rating of electronic instruments?
The waterproof level of electronic instruments reflects the ability of moisture-proof and dust-proof, and there are ten levels of protection.
A protection level of 0 means no protection;
The protection level is 1, which means that water drops falling from the vertical direction are harmless;
The protection level is 2, that is to say, it is harmless for water drops to fall at an angle of 15 degrees from the vertical;
The protection level is level 3, that is to say, if the precipitation within 60 degrees from the vertical is harmless;
The protection level is level 4, which means that water splashing in any direction will not affect it;
The protection level is level 5, that is, it will not be affected by water injection in any direction;
The protection level is 6, and spraying water in any direction will not affect the interior;
The protection level is 7, even if it is soaked in water in time under certain conditions, there will be no water;
The protection level is 8, that is, there is still a certain pressure after being soaked in water for a long time, which will not affect the use;
The protection level is 9, that is, the humidity is greater than 100%, which will not affect the use.
The above is the classification of waterproof grades of buildings and electronic instruments. Do you understand now? I hope it helps you.