Technical Booklet G Resistance to the Passage of Sound·Page 20·1.17
Exceptions to Sub-grouping Requirements
Sub-grouping may not be necessary where dwellings have identical separating wall and/or floor construction with same flanking construction and broadly similar room dimensions and layouts.
Sub-grouping may not be necessary for dwellings and rooms for residential purposes that have the same separating wall and/or separating floor construction, with the same associated flanking construction(s), and where the room dimensions and layouts are broadly similar.
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