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Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Code for Sound Insulation Design of Civil Buildings
GBJ118—88
1989 Beijing
Engineering Construction Standard Full-text Information System
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National Standard of the People's Republic of China
Code for Sound Insulation Design of Civil Buildings
GBJ118—88
Editor Department: Ministry of Urban and Rural Construction and Environmental Protection of the People's Republic of China Approval Department: People's Republic of China State Planning Commission of the Republic of China Effective date: November 1, 1988
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Notice on the Release of "Civil Building Sound Insulation Design Code"
Ji Biao (1988] No. 389
According to the requirements of the former State Construction Commission (81) Jianfa She Zi No. 546, the "Civil Building Sound Insulation Design Code" jointly compiled by the China Academy of Building Research and relevant units has been reviewed by relevant departments. The "Civil Building Sound Insulation Design Code" is now approved. GBJ118-88 is a national standard and has been in effect since November 1, 1988. This code is managed by the Ministry of Urban and Rural Construction and Environmental Protection. Its specific interpretation and other work are the responsibility of the China Academy of Building Research. The publication and distribution is the responsibility of China Planning Press. State Planning Commission
March 16, 1988
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Preparation Instructions
This code is based on the requirements of the former National Capital Construction Commission (81) Jianfashezi No. 546, and is compiled by The National Technical Committee on Acoustic Standardization is responsible for the centralized organization, and the China Academy of Building Research jointly compiled it with relevant units. During the compilation of this specification, the specification compilation team conducted surveys and measurements in 20 cities across the country, and referred to relevant technical specifications and materials at home and abroad. On this basis, the first draft of the specification was proposed, and after widely soliciting opinions from relevant domestic units, the draft specification was completed after revision. Finally, it was reviewed by our department together with relevant departments, and the National Technical Committee on Acoustic Standardization organized the review and finalization.
This specification is divided into six chapters and three appendices. Its main contents are: Principles, general plan noise prevention design and indoor allowable noise levels, sound insulation standards and sound insulation and noise reduction design requirements for four types of buildings: residential, school, hospital and hotel.
During the implementation of this code, it is hoped that all units will pay attention to accumulating information and summarizing experience. If you find that there is a need for modification or supplement, please send your opinions and relevant information to the Institute of Building Physics, China Academy of Building Research (Chegongzhuang Street, Beijing) for reference in future modifications.
Ministry of Urban and Rural Construction and Environmental Protection
December 1987
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Chapter 1
Chapter 2
Chapter 3
Section 1
Section 2
Section 3
Chapter 4
Section 1
Section 2
Section 3
Chapter 5
Section 1
Section 2
Section 3
Chapter 6
Section 1
Section 2
Section 3
Appendix 2
Appendix Record 3
Additional Notes
General Plan Noise Prevention Design
Residential Buildings
Allowed Noise Level
Sound Insulation Standard
Sound Insulation and Noise Reduction Design
School Buildings
Allowed Noise Level
Sound Insulation Standard
Sound Insulation and Noise Reduction Design:
Hospital Buildings…
Allowed Noise Level
Sound Insulation Standard
Sound Insulation and Noise Reduction Design
Hotel Buildings
Allowed Noise Level
Sound Insulation Standard
Sound insulation and noise reduction design
Correction of indoor allowable noise level and noise measurement value and conversion of corresponding evaluation curve
Allowable noise level and sound insulation measurement method
Explanation of terms used in this specification
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(23)
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Chapter 1 General
Article 1.0.1 This specification is formulated to improve the use function of civil buildings and ensure a good indoor sound environment.
Article 1.0.2 This specification applies to the sound insulation and noise reduction design of the main rooms in four types of buildings, namely, residential buildings, schools, hospitals and hotels, which are newly built, expanded and renovated in cities and towns across the country.
Among them, the design principles of residential buildings are also applicable to collective dormitories, but the design standards of collective dormitories should be one level lower than those of residential buildings. The standards for school buildings apply to general teaching rooms in primary and secondary schools and colleges.
The standards for hospital buildings apply to urban general hospitals, while specialized hospitals and other hospitals may adopt the standards for corresponding rooms in general hospitals. Article 1.0.3 The standard level for sound insulation and noise reduction design shall be determined according to the actual use requirements of the building, and shall be divided into four levels: special, first, second and third. The meanings of the standard levels are as follows:
Special standards
(determined according to special requirements)
Higher standards
General standards
Minimum limits
Article 1.0.4 The basic parameters of the allowable noise level of this specification shall be A-weighted noise level. The allowable noise level of various types of buildings shall be the standard value under the condition of opening windows during the day, and the noise characteristics shall be steady-state noise. For different noise characteristics (including peak factors, frequency characteristics, duration and fluctuations, etc.), the noise measurement values shall be corrected according to the provisions of Appendix 1 of this specification. The measurement of the allowable noise level should be carried out when the noise source with the most serious impact is making sound, and the measurement method should comply with the requirements of Appendix 2. Engineering Construction Standard Full Text Information System
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Note: For buildings that do not need to open windows during use, such as air-conditioned hotel rooms, the allowable noise level refers to the noise value when the windows are closed.
In addition to implementing the provisions of Article 1.0.5 of this Code
, the evaluation of the relevant sound insulation standards for civil building sound insulation and noise reduction design shall comply with the current national standard "Building Sound Insulation Evaluation Standard" and shall comply with the provisions of the current national relevant design standards and specifications. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 2 General Plan Noise Prevention Design
Article 2.0.1 In urban planning, the division of functional areas, the distribution of traffic road networks, the setting of greening and isolation belts, and the use of favorable terrain and building shielding shall all meet the requirements of noise prevention design. Residential buildings, schools, hospitals, hotels and other buildings should be far away from airports, railway lines, marshalling yards, stations, ports, docks and other buildings. Article 2.0.2 New residential areas should arrange noise-insensitive buildings on the periphery of the residential area near the traffic lines as much as possible to form a peripheral sound barrier. Traffic arteries should not run through the residential area.
Note: Noise-insensitive buildings refer to buildings that have no noise-proofing requirements, such as commercial buildings, and buildings that have noise-proofing requirements but have good noise-proofing capabilities in the outer protective structure, such as hotels with air-conditioning equipment. Article 2.0.3 The location of various building ancillary facilities with noise sources (such as boiler rooms, water pump rooms, etc.) in the areas where residential buildings, schools, hospitals, hotels and other buildings are located should avoid noise interference to the buildings, and noise-proofing treatment should be carried out when necessary. Strong noise sources that have not been effectively treated shall not be set up in the area. Article 2.0.4 Before carrying out architectural design, a detailed investigation and measurement of the noise sources inside and outside the environment and buildings should be conducted, and the noise-proofing spacing, orientation selection and plane layout of the buildings should be comprehensively considered. If the indoor quiet requirements cannot be met after the above design, noise prevention measures should be taken in the building structure. Article 2.0.5 When conditions permit, the noise source should be set underground, but it should not be adjacent to or under the main building. If it cannot be avoided, reliable vibration isolation and sound insulation measures must be taken.
Article 2.0.6 Civil buildings with high requirements for quietness should be located on the upwind side of the main noise source in the area in summer. Engineering Construction Standard Full Text Information System
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Chapter 3
Residential Buildings
Section 1 Permissible Noise Level
Article 3.1.1 The permissible noise level of bedrooms, study rooms and living rooms in residential buildings shall comply with the provisions of Table 3.1.1.
Permitted noise level indoors
Room name
Bedroom, study
(or bedroom and living room)wwW.bzxz.Net
Living room
Section 3.2.1
3.2.1.
Enclosure structure parts
Partition walls and floor
Article 3.2.2
Allowable noise level (A sound level, dB)
Section 2 Sound insulation
Sound insulation standards
The air sound insulation standards for partition walls and floor shall comply with the table Air sound insulation standards
Weighted sound insulation (dB)
The impact sound insulation standards for floor shall comply with the table 3.2.2. Standard full text information system
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Impact sound insulation standard
Floor position
Inter-family floor
Weighted standardized impact sound pressure level (dB)
Note: When there are real difficulties, the weighted standardized impact sound pressure level of the third-level floor can be allowed to be less than or equal to 85dB, but possible conditions for improvement should be reserved in the floor structure. Section 3 Sound insulation and noise reduction design
Article 3.3.1 The location of the children's playground in the residential building complex should avoid noise interference to the residence.
Article 3.3.2 When the residence is arranged along the urban main road, the bedroom or living room should not be located on the side facing the street. If the design is really difficult, each household should have at least one main bedroom facing away from the noisy main road. When the above conditions are also difficult to meet, the public corridors or balconies facing the street can be used to take sound insulation and noise reduction measures. In order to reduce the noise transmitted by doors and windows, the door and window gaps of the exterior walls must be tight, and sealing strips should be used when necessary. Article 3.3.3 When designing the residential floor plan, the rooms connected to the partition wall and the rooms above and below the partition floor slab should be of the same type. Article 3.3.4 The kitchen, toilet, and elevator machine room shall not be located on the upper floor of the bedroom and living room, and the elevator shall not be arranged adjacent to the bedroom and living room. When the kitchen or toilet is adjacent to the bedroom, living room, or study, its pipes or equipment and other objects that may transmit sound shall not be located on the wall on one side of the bedroom, study, and living room, and vibration isolation measures shall be taken for pipes and other objects fixed on the wall that may cause sound transmission. Article 3.3.5 Garbage pipes should not be adjacent to bedrooms and living rooms. If they are arranged adjacently due to conditions, measures must be taken to prevent the transmission of structure-borne sound at the garbage dump.
Article 3.3.6 For residential buildings with high requirements for quietness, sound absorption measures should be taken in enclosed stairwells or enclosed public corridors. The sound insulation of the door facing the stairwell or public corridor should not be less than 20dB. Engineering Construction Standard Full Text Information System
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Article 3.3.7 For rooms with suspended ceilings, the partition wall must completely separate the space inside the suspended ceiling.
Article 3.3.8 If the boiler room and water pump room are located in a residential building or adjacent to a residential building, reliable sound insulation and noise reduction measures must be taken. Article 3.3.9 Measures should be taken to prevent sound transmission in the smoke exhaust and exhaust passages and water pipes between two adjacent households.
Article 3.3.10 For buildings with structural systems with good integrity such as large panels and large molds, measures should be taken to prevent the propagation of structure-borne sound in places where impact and vibration often occur, such as kitchen worktops, external doors, balcony doors, equipment pipes, etc. Work Construction Standard Full Text Information System
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Measurement School Buildings
Chapter 4
Section 1 Allowable Noise Level
Article 4.1.1 The allowable noise level of various teaching rooms and teaching auxiliary rooms in school buildings shall comply with the provisions of Table 4.1.1. Indoor
Allowable Noise Level
Room Name
Rooms with Special Quiet Requirements
General Classrooms
Rooms without Special Quiet Requirements
Allowable Noise Level (A Sound Level, dB)
Note: ① Rooms with special quiet requirements refer to language classrooms, recording studios, reading rooms, etc. 3
General classrooms refer to ordinary classrooms, history and geography classrooms, combined classrooms, natural science classrooms, music classrooms, piano rooms, audio-visual classrooms, art classrooms, etc.
Rooms without special quiet requirements refer to gyms, dance classrooms; laboratories mainly for operations, teachers' offices and lounges, etc.
② When there is disturbing noise (such as singing) nearby that is particularly likely to distract students from listening to the class, the allowable noise level in Table 4.1.1 should be reduced by 5dB. Section 2
Sound insulation standards
The airborne sound insulation standards for the enclosure structures of different rooms shall comply with the provisions of Article 4.2.1
Table 4.2.1.
Engineering Construction Standards Full-text Information SystemThe permissible noise level in 1 should be reduced by 5dB. Section 2
Sound insulation standards
The airborne sound insulation standards for the enclosure structures of different rooms shall comply with the provisions of Article 4.2.1
Table 4.2.1.
Engineering Construction Standards Full Text Information SystemThe permissible noise level in 1 should be reduced by 5dB. Section 2
Sound insulation standards
The airborne sound insulation standards for the enclosure structures of different rooms shall comply with the provisions of Article 4.2.1
Table 4.2.1.
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