Type of glass |
Only glass pack from polished glass, rolled sheet glass, laminated glass, ornamental glass. |
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Examples |
Too small a gap between pieces of glass, when there are internal decorative frames; Decorative frames with strong distance points at the centre of the frame crossing; Huge differences of the air pressure, temperature and/or height between the glass pack production and the installment place. |
Beginning |
Edge break angle in all directions, not up-right; Transition angle not upright; Usually it is impossible to attribute unambiguously. |
Lines of process |
Almost always last from edge to edge; Direct break lines; Break often is parallel to frames; Often transfer of the break edges. |
End |
Usually it is impossible to attribute unambiguously; Direct break lines, last to the edge. |
Other features |
Small angular cracks in the middle area; Often in the gap of the pieces of glasses; Possible to avoid, using the single safe glass or producing with a larger gap between glasses. |