Revision of Chinese National Standard GB 50118 - Code for Design of Sound Insulation of Civil Buildings
* Presenting author
The national standard GB 50118 Code for Design of Sound Insulation of Civil Buildings, issued by Ministry of Housing and Urban-Rural Development (MOHURD), is the basic code for indoor acoustical quality of civil buildings in China. It stipulates the limits for indoor noise levels and sound insulation performance of building elements, and specifies the design criteria of noise control. The current version was published in 2010, in which requirements had been raised compared to previous version. However, with the rapid development in China during the last decade, current regulations could not meet the growing needs for better sound environment. Traffic noise, HVAC noise and structure-borne noise from service equipment have become increasingly annoying, and inadequate sound insulation aggravates the situation. Therefore, MOHURD commissioned China Academy of Building Research to undertake the revision of current standard in 2018. Based on the correlation between field measurement results and occupants’ perception, and referring to guidelines and regulations in developed regions, we’d like to put forward stricter requirements for indoor noise and sound insulation performance of building elements. Besides, limits for structure-borne noise caused by vibrations of building service equipment or any other noise sources will be introduced to assess the dominant low-frequency noise.