NEN EN 12446 : 2011

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Materials and designation of outer wall elements
   4.1 Materials
   4.2 Designation and classes
5 Reinforcement
6 Surface treatment
7 Form, dimensions and tolerances
   7.1 Form
   7.2 Dimensions
   7.3 Tolerances
   7.4 Squareness of ends
8 Performance
   8.1 Heat stress resistance
   8.2 Heat shock resistance
   8.3 Thermal resistance
   8.4 Compressive strength
   8.5 Bulk density
   8.6 Freeze-thaw resistance
   8.7 Flexural strength under wind loading
9 Designation
   9.1 General
   9.2 Temperature classes
   9.3 Resistance to fire classes
10 Marking
11 Product information
12 Evaluation of conformity
   12.1 Initial type testing
   12.2 Further type tests
   12.3 Factory production control
Annex A (normative) Test methods
   A.1 Heat stress resistance and heat shock test
        A.1.1 Apparatus
        A.1.2 Test assembly
        A.1.3 Test environment and conditioning
        A.1.4 Procedure
Annex B (normative) Requirements of sampling plan according to
        ISO 2859-1 at an Acceptable Quality Level (AQL) and
        inspection level S2 Inspection Procedure
   B.1 Acceptability determination
        B.1.1 Single sampling
        B.1.2 Double sampling
   B.2 Normal inspection
   B.3 Normal
   B.4 Reduced to normal inspection
   B.5 Tightened inspection
   B.6 Tightened to normal inspection
   B.7 Discontinuation of inspection
Annex ZA (informative) Clauses of this European Standard addressing
         the provisions of the EU Construction Products Directives
Bibliography

Defines the material, dimensional and performance requirements for factory made precast concrete outer wall elements for chimneys including outer wall fittings.