NEN EN 1863-1 : 2011

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

Defines tolerances, flatness, edgework, fragmentation and physical and mechanical characteristics of monolithic flat heat strengthened soda lime silicate glass of nominal thicknesses from 3 mm to 12 mm for use in buildings.