EN 771-6:2011+A1:2015

European foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Materials of natural stone
5 Requirements for natural stone masonry units
6 Description, designation and classification of
  natural stone masonry units
7 Marking
8 Assessment and verification of constancy of
  performance (AVCP)
Annex A (normative) - Sampling for type testing
        and for independent testing of consignment
Annex B (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

This European Standard specifies the characteristics and performance requirements of masonry units manufactured from natural stone the width of which is equal to or greater than 80 mm, for which the main intended uses are common, facing or exposed masonry units in loadbearing or non-loadbearing building and civil engineering applications These units are suitable for all forms of coursed or random masonry walling, including single leaf, cavity, partition, retaining and the external masonry to chimneys. They can provide fire protection, thermal insulation, sound insulation and sound absorption.This European Standard includes natural stone masonry units of an overall non-rectangular parallelepiped shape, specially shaped and accessory units for internal and external application.It defines the performance related to e.g. strength, petrographic description, density, porosity, dimensional accuracy, thermal conductivity, water absorption, and frost resistance and provides for the !assessment and verification of constancy of performance (AVCP)" of the product to this European Standard. The marking requirements for products covered by this European Standard are also included.This European Standard does not cover storey height panels, natural stone for paving, chimney flue linings nor units intended for use as damp proof course.