Contribution
Practical Application of ISO 22955 for Acoustic Design in Open-Plan Offices
* Presenting author
Abstract:
ISO 22955, initially published in 2021, offers guidance on assessing the acoustic quality of open-plan offices. The standard provides recommendations including sound level differences between livelier work areas or areas with increased communication and areas to be protected. Recommendations are given depending on the respective use of the transmitting and receiving workspace.Drawing on an extensive dataset of measurements acc. to ISO 3382-3 conducted in various open-plan offices, this analysis determines required distances between the speech sound source and the protected area. These distances are theoretically necessary to meet the recommendations if no additional shielding measures are taken. In this context, several examples are presented in which ISO 22955 has already been used to assess the rooms acoustic layout. Given the short distances between source and receiver common in modern office spaces, it is evident that the recommendations can only be met by using shielding elements with sufficient sound insulation. Acoustic simulations are used to discuss approaches to optimize the design of open-plan workspaces to meet the recommendations of ISO 22955. In particular, the shielding potential of fabrics, acoustic panels and conventional partition walls is being investigated.