NS EN 12354-3 : 1ED 2000
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
01-11-2017
12-01-2013
Foreword
1 Scope
2 Normative references
3 Relevant quantities
3.1 Quantities to express building performance
3.1.1 Apparent sound reduction index
R'45 degrees
3.1.2 Apparent sound reduction index
R'tr,s
3.1.3 Standardized level difference
D2m,nT
3.1.4 Normalized level difference
D2m,n
3.1.5 Relations between quantities
3.2 Quantities to express element performance
3.2.1 Sound reduction index R
3.2.2 Element normalized level difference
Dn,e
3.2.3 Other relevant data
3.3 Other terms and quantities
4 Calculation models
4.1 General principles
4.2 Determination of direct transmission from
mative)tic data on elements
4.2.1 Small elements
4.2.2 Other elements
4.3 Determination of flanking transmission
4.4 Interpretations
4.5 Limitations
5 Accuracy
Annex A (normative) List of symbols
Annex B (informative) Determination of transmission
by elements from composing parts
Annex C (informative) Influence of facade shape
Annex D (informative) Sound reduction index of elements
Annex E (informative) Estimation of indoor sound levels
Annex F (informative) Calculation examples
Bibliography
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