Status : Withdrawn, Superseded Published : June 1980 Replaced By : BS EN ISO 140-5:1998
Applies to the sound insulation of a building facade with respect to external noise such as traffic noise. The sound source for the steady state $u1$2T3 octave band filtered level difference can be either the existing traffic noise or noise from a loudspeaker. The results, expressed as either sound reduction index or standardized level difference can be used to determine whether facades have met acoustic specifications. Method mainly intended to measure noise reduction efficiency of double glazing.
Multi-user access to over 3,500 medical device standards, regulations, expert commentaries and other documents
The faster, easier way to work with standards
Understand the changes made to a standard with our new Tracked Changes version
Worldwide StandardsWe can source any standard from anywhere in the world
We use cookies to make our website easier to use and to better understand your needs.
Learn more about the cookies we use and how to change your settings.