Delta break I

Mechanic surface load – long-term – static / dynamic – double fastening
Type of glass

Polished glass, rolled sheet glass, laminated glass, ornamental glass, armoured glass

Examples

Long-term big snow load in the case of double or triple fastening.

Beginning

The angle of the edge crack is not upright;

Transition angle not upright;

There are no angular surfaces by the glass edge;

Break centre in the edge.

Lines of process

Relatively parallel to the longer edge throughout all the surface;

Direct, not angular, slightly bent lines;

The form of delta or a bowl.

End

Direct lines;

Partially till the edge of glass.

Other features

Possible curvilinear cracks of the surface in the load side;

As the load increases, the number of cracks also increases.