1. Category 0: 50 dB during daytime and 40 dB at night (from 22:00 to 6:00 a.m. the next day);
2. Category 1: 55 dB during daytime and 45 dB at night;
3. Category 2: 60 dB during daytime and 50 dB at night;
4. Category 3: 65 dB during daytime and 55 dB at night;
5. Category 4: 70 dB during daytime and 55 dB at night;
7. Category 5: 70 dB during daytime and 55 dB at night. 65 dB during the day and 55 dB at night;
5, Category 4: 70 dB during the day and 55 dB at night.
According to the national standard, the noise in residential areas should not exceed 50 decibels during the day and should be less than 45 decibels at night, and if it exceeds this standard, it will be harmful to the human body. Residential noise pollution standards mainly refer to class 1, class 2 standards, senior villa areas can refer to class 0 standards.
Type 0 standard applies to convalescent areas, high-level villa areas, high-level hotel areas and other special need for quiet areas. Located in the outskirts of the city and the countryside of this type of area, respectively, according to the implementation of the standards more stringent than category 0.
1 class standard applies to residential, cultural and educational institutions mainly in the area. Rural residential environment can refer to the implementation of the standards in this category. 2 standards apply to residential, commercial and industrial mixed areas.
Legal basis:
"Chinese People's Republic of China*** and National Noise Pollution Prevention and Control Law"
Article 14 of the State Council department in charge of ecological and environmental protection to formulate the national acoustic environment quality standards.
Local people's governments at or above the county level, in accordance with the national acoustic environmental quality standards and national land spatial planning as well as the status quo of land use, delineate the applicable areas of various types of acoustic environmental quality standards in their administrative areas; the areas dominated by buildings used for residence, scientific research, medical care and health care, culture and education, offices of organizations and groups, and social welfare, etc., will be delineated as the areas of concentration of noise-sensitive buildings, and the prevention and control of noise pollution will be strengthened. Prevention and control.
The scope of the area to which the sound environment quality standards apply and the scope of the area in which the noise-sensitive buildings are concentrated shall be announced to the public.
Article 17 of the sound environment quality standards, noise emission standards and other noise pollution prevention and control of related standards should be regularly assessed, and revised in accordance with the results of the assessment in due course.
Article 68 of the residents of residential areas to install elevators, pumps, transformers and other *** with facilities and equipment, the construction unit shall be reasonably set up, take measures to reduce vibration, noise reduction measures, in line with the requirements of the relevant standards for sound insulation design of civil buildings.
Completed the use of residential elevators, pumps, transformers and other *** with facilities and equipment by professional operators responsible for the maintenance and management, in line with the requirements of the relevant standards for sound insulation design of civil buildings.