NEN EN 12058 : 2015

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
   4.1 Requirements for geometric characteristics
        4.1.1 General
        4.1.2 Requirements for thickness
        4.1.3 Requirements for flatness
        4.1.4 Requirements for length and width
        4.1.5 Requirements for angles and special
               shapes
        4.1.6 Commercial sizes of slabs for floors and
               stairs
        4.1.7 Requirements for surface finish
   4.2 Requirements of natural stone for floors and
        stairs
        4.2.1 General
        4.2.2 Denomination
        4.2.3 Visual appearance
        4.2.4 Flexural strength
        4.2.5 Bond strength adhesion
        4.2.6 Water absorption at atmospheric pressure
        4.2.7 Reaction to fire
        4.2.8 Water absorption by capillarity
        4.2.9 Apparent density and open porosity
        4.2.10 Frost resistance
        4.2.11 Thermal shock resistance
        4.2.12 Water vapour permeability
        4.2.13 Abrasion resistance
        4.2.14 Slipperiness behaviour
        4.2.15 Tactility
5 Marking and packaging
6 Evaluation of conformity
   6.1 General rules
   6.2 Initial type testing
   6.3 Factory production control
Annex A (normative) Sampling
   A.1 General
   A.2 Principles of sampling
   A.3 Taking bulk samples
   A.4 Preparing a sampling plan
   A.5 Sampling apparatus
   A.6 Sampling methods
        A.6.1 General
        A.6.2 Sampling from quarries
        A.6.3 Sampling from plants
        A.6.4 Sampling from buildings
   A.7 Marking, packaging and dispatch of the samples
   A.8 Sampling report
Annex ZA (informative) Clauses of this European Standard
                       addressing the provisions of the EU
                       Construction Products Directive
   ZA.1 Scope and relevant characteristics
   ZA.2 Procedures for the attestation of conformity
   ZA.3 CE marking and labelling
        ZA.3.1 CE marking
        ZA.3.2 Reference model for marking and labelling
   ZA.4 EC Declaration of conformity
Bibliography