No products
View larger 
ISO 140-4:1998
M00009025
New product
ISO 140-4:1998 Acoustics -- Measurement of sound insulation in buildings and of building elements -- Part 4: Field measurements of airborne sound insulation between rooms
standard by International Organization for Standardization, 08/01/1998
In stock
More info
Full Description
This part of ISO 140 specifies field methods for measuring the airborne sound insulation properties of interior walls, floors and doors between two rooms under diffuse sound field conditions in both rooms, and for determining the protection afforded to the occupants of the building.
The methods give values for airborne sound insulation which are frequency dependent. They can be converted into a single number, characterizing the acoustic performance, by application of ISO 717-1.
The results obtained can be used to compare sound insulation between rooms and to compare actual sound insulation with specified requirements.