Installation Instructions
SABIC Innovative Plastics 33
Sheet Thickness Criteria
Support Conditions
Note
Regardless of the support conguration 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 specied loading which results in an
acceptable sheet deection behaviour without the risk
of sheet buckling or pop-out effect calculated with a
safety factor of 1.5.
N.B. 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 instal-
lation or cleaning. A temporary wooden beam or other
device, supported by the roof members, should always
be used.
sheet edge
engagement ±20mm
27
°
28
29
sheet width
sheet length
26