NF EN 1863-1 : 2012

Foreword
Introduction
1. Scope
2. Normative references
3. Definitions
4. Glass products
5. Fracture characteristics
6. Dimensions and tolerances
   6.1 Nominal thickness and thickness tolerances
   6.2 Width and length (sizes)
   6.3 Flatness
7. Edge work, holes, notches and cut-outs
   7.1 Warning
   7.2 Edge working of glass for heat strengthening
   7.3 Profiled edges
   7.4 Round holes
   7.5 Notches and cut-outs
   7.6 Shaped panes
8. Fragmentation test
   8.1 General
   8.2 Dimensions and number of test specimens
   8.4 Assessment of fragmentation
   8.5 Evaluation of fragmentation
9. Mechanical strength
10. Other physical characteristics
10.1 Optical distortion
10.2 Anisotropy (iridescence)
10.3 Thermal durability
11. Marking
Annex A (normative) Determination of U value
Annex B (informative) Curved heat strengthened soda lime
                      silicate glass

Tolerances, edgework, fragmentation, flatness and physical and mechanical characteristics of monolithic flat heat strengthened soda lime silicate glass for used in buildings are defined in this European Standard. Details on curved heat strengthened soda lime silicate glass is given in Annex B, but this product does not form part of this Standard. Other requirement, not specified in this standard can apply to heat strengthened soda lime silicate glass which is incorporated into assemblies, eg: insulating units, laminated glass or undergo additional treatment such as coating. Heat strengthened soda lime silicate glass, in this case does not lose its mechanical or thermal characteristics.