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Edge break II – partially tampered glass

Mechanic spot load – shot-term – small / medium intensity
Type of glass

Only partially tampered glass by DIN EN 1863

Examples

Small stones between pieces of glass;

Hit by an object;

Hammer hit on the glass belt;

Other hits or collisions.

Beginning

Edge crack angle in all directions, not upright;

Transition angle is not upright;

Visible outlet point in the zone of the edge;

Possible curvilinear cracks in the break centre.

Lines of process

Beam forms from the edges;

From direct to winding break lines;

Last till the edge.

End

Last till the edge.

Other features

Often curvilinear cracks occur by the adjacent edge;

No break isles, the crack often lasts till the edge of the glass (by DIN EN 1863) and depend upon the size and thickness of the glass.