I.S. EN 771-4:2011

National Foreword
European foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Materials and manufacture
5 Requirements for AAC masonry units
6 Description, designation and classification of
  AAC masonry units
7 Marking
8 Assessment and verification of constancy
  of performance (AVCP)'
Annex A (normative) - Sampling for product type determination
        test and for independent
        testing of consignments'
Annex B (normative) - Cutting schemes
Annex C (informative) - Guidance on FPC frequencies
Annex ZA (informative) - Clauses of this European Standard
         addressing the provisions of the EU Construction
         Products Regulation'
Bibliography

Defines the characteristics and performance requirements of autoclaved aerated concrete (AAC) masonry units for which the main intended uses are different types of load bearing and non-load bearing applications in all forms of walling including single leaf, cavity, partitions, retaining, basement and general use below ground level, including walling for fire protection, thermal insulation, sound insulation and the fabric of chimneys (excluding chimney flue units).