Installation Instructions
38 SABIC Innovative Plastics
Curved Glazing sheet Thickness
Lexan Thermoclear sheet can be successfully cold-
curved over curved support glazing proles, to suit
many glazing applications, e.g. domes, roof-lights,
etc. Providing the radius is not below the minimum
recommended value, then the introduced stress by
cold-curving will not have any adverse effect upon the
mechanical performance of the sheet. Sheets must
always be bent longitudinally, never across the width of
the sheet.
Table 20: Minimum radius values
Lexan Thermoclear
sheet thickness
Min. Radius in inch
0,24 41,34
0,31 55,12
0,39 68,90
0,63 110,24
0,79 137,80
The loading characteristics given in Table 21 are
based upon curved glazing applications clamped on
all four edges. The Table shows linear buckling load
values, (calculated with a safety factor of 2.0), against
installation radii for different sheet widths.
sheet length ‘L’ needs to be greater than sheet width
‘W’ to facilitate curvature; in practice, a ratio of 1:2 or
less is never contemplated because of the practicalities
of installation geometry.
radius 'R'
span
centre to centre
distance between
curved support/glazing
profiles
35