Ordinary thermal crack

Evently distributed thermal load - small / medium intensity

Type of glass	Polished glass, figured (ornamental) glass, rolled sheet glass, laminated glass. In case of armoured glass, deviations are possible due to the grid.
Examples	Partial inside covering of glass under the shining sun; Too deep chase; Glass units with sound and heat insulation are mounted in the glass pack with the sun control function, without covering under direct sunshine.
Beginning	Right-angled edge crack; Right-angled transition angle; No curvilinear cracks in the beginning.
Lines of process	Change of direction near the cold/heat zone (crack/incurve), then the line is curvy.
End	Straight line; Also often with an angle.
Other features	Curvilinear cracks from rarely and they happen to appear in the zone of the first change of direction;

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