Curved Glass
Thickness: 8mm, 10mm, 12mm +/-1mm Curved glass size- rectangles
| Developed width: |
360 to 2000mm |
+/-3mm |
| Length: |
400 to 3300mm |
+/-3mm |
| Aspect ratio: |
2:1 maximum for large areas |
|
| Minimum size: |
1000 x 1000mm |
+/-3mm |
| Minimum radius: |
1000mm |
|
Tolerances on curves are difficult to define. In simple terms:
Straight edge will be: +/-3mm from the straight
Developed width will be: +/-3mm from perfect curve
Note: ‘developed width’ means the width of glass pane prior to bending.
Curved shape capability
Rectangles and simple rakes. All tolerances will vary depending on complexity of shape.
Edge condition
Smooth ground edges giving a flat profile with small ground arris. Shells or chips at edges will be ground out prior to toughening and do not constitute reason for rejection. Corners may be dubbed. Some variation in edgework may be discernible on exposed edges where different machine and/or hand forming is a requirement for manufacture. Such variations shall be kept to a minimum.
Hole drilling
| DDiameter: |
19mm +/-1mm (countersunk)Curved glass countersunk on convex side. |
| Position: |
Normally 100mm from glass edge at corners and sometimes along edge. Other configurations subject to confirmation. |
| Tolerance: |
+/-2mm from one datum point. |
| Number: |
2-8 |
Toughening stress
The glass will be toughened to a similar standard as TSE Class A but no standard exists for curved glass.
Glass marking
Glass will be marked with the LAMGLAS stamp and any regulatory requirements. The mark to be on each glass usually near a corner.
Visual quality
A degree of distribution, both when looking through and in reflection, is inevitable in curved toughened glass, particularly when viewing a moving object through the glass. All curved glass should be site inspected from a minimum distance of 3m and viewed at right angles to the glass. It should also be noted that toughened curved glass will split direct sunlight into striped shadow. General Notes-
Curved Glazing Curved
LAMGLAS Skytec® applications are the subject of continuing development and inquiries are welcomed for projects furthering current specifications and usage. Special fittings have been designed for curved glazing and particular torque settings determined. The angle of spring plate or especial desing must suit the curve radius.
