BS EN 771-2 : 2011

European foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Materials and manufacture
5 Requirements for calcium silicate masonry units
6 Description, designation, designation code and
  classification of calcium silicate masonry units
7 Marking
8 Assessment and verification of constancy of
  performance (AVCP)
Annex A (normative) - Sampling for product type
        determination tests and for independent
        testing of consignments
Annex B (normative) - Cutting schemes
Annex C (normative) - Tolerances on accessory units
Annex D (informative) - Classification systems
Annex E (informative) - Guidance for test frequencies
        for designing a FPC system to demonstrate
        conformity of finished products with the requirements
        of the standard and the declaration of the manufacturer
Annex ZA (informative) - Clauses of this European
         Standard addressing the provisions of the EU
         Construction Products Regulation
Bibliography
National Annex (informative) - Commentary on the
               differences between EN 771-2:2011+A1:2015
               and BS 187:1978

Defines the characteristics and performance requirements of calcium silicate masonry units for which the main intended uses are inner walls, outer walls, cellars, foundations and external chimney masonry.