Installation Guide

SHEET THICKNESS CRITERIA
LEXAN
™
THERMOCLEAR
™
MULTIWALL POLYCARBONATE SHEET, 02-2016 TECHNICAL MANUAL 33
Support Conditions
Note
Regardless of the support configuration selected, the sheet should
always be installed so that the rib structure channels are sloping
downwards. sheet “width” is the dimension perpendicular to the
rib structure, “length” the dimension parallel.
Sloped roofing
For sloped glazing applications a minimum slope of 5°
(9 cm/m sheet length) is advised to allow for rainwater
drainage.
Safety Factor
Tables 17, 18 and 19 indicate the maximum allowable sheet
size at a specified loading which results in an acceptable sheet
deflection behaviour without the risk of sheet buckling or pop-
out effect calculated with a safety factor of 1.5.
Note: The values indicated in the Tables are applicable for a LEXAN
THERMOCLEAR sheet edge engagement in the glazing frame of at
least 20 mm.
Site Safety
On roof constructions LEXAN THERMOCLEAR sheet should
not be used to support a person’s weight during installation
or cleaning. A temporary wooden beam or other device,
supported by the roof members, should always be used.
sheet edge
engagement ±20mm
5
º
sheet width
sheet length
Figure 16 Figure 18
Figure 19
Figure 17