| Table of Contents(Page DL-54) |
Double-LokŪ SPECIAL ERECTION TECHNIQUES
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UL 90 LIGHT TRANSMITTING PANEL INSTALLATION The light transmitting panel is designed to be installed in a manner similar to a panel application, utilizing the same panel lap (3) and fastener layout.
UL 90 light transmitting panels are shipped with a stiffener plate and ten self-drilling #1 E fasteners for each light transmitting panel. The stiffener plate is to be field installed on the bottom side of the light transmitting panel over the mid-purlin. The light transmitting panel rivets that obstruct the stiffener plate must be drilled out and replaced with Fastener #1 E in five places on each side. THIS STIFFENER PLATE MUST BE EXACTLY CENTERED OVER THE MID-PURLIN SO THAT THE THERMAL MOVEMENT OF THE SYSTEM IS NOT RESTRAINED BY THE PURLIN.
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