Technical Specifications

1212 Enterprise Drive, De Pere, WI 54115 | P: 888.602.4441 Multiwall Polycarbonate Technical Overview (Updated 9/3/13)
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Loading:
Loading requirements need to be determined based on local conditions and codes. The framing structure holding the
multiwall polycarbonate must be constructed to support these loads and its details are independent of this document.
The maximum sheet deflection is often the limiting factor for multiwall polycarbonate sheet. The chart below indicates
maximum spans for a max 1” deflection at several different loads. The details of this loading and the max spans will be
project specific. Other loading documents are available if the conditions require.
Overglazing:
It is possible to use multiwall polycarbonate in addition to existing glass windows. This process of over glazing can offer
increased impact protecting, thermal performance, or visual improvements. When overglazing, provide a 1” to 2” gap
between the multiwall polycarbonate and existing glass. Allow for proper thermal expansion and provide weep holes for
drainage.
Additional Information:
If additional technical, loading, or system information is needed, please contact AmeriLux International. If you have
specific question about requirements in your region, contact your local code office or building inspector. The
information provided in this document is intended to be an overview of recommendations. Specific requirements may
differ depending on location and construction type.
Drawings and technical reports are provided for reference only. Drawings are not project specific and are for product represe ntation only. Actual
products may vary. These drawings are the property of AmeriLux International and are to be used solely as a representation of AmeriLux products.
These designs may not be recreated or produced without the expressed, written consent of AmeriLux.
All information, recommendations, or advice given by AmeriLux International employees or partners, written or oral, is given in g ood faith and is
thought to be accurate and current. It is the responsibility of each product user to ensure the product is used in compliance with current
environmental and legal requirements specific to each product application. AmeriLux International and its partners will not b e held liable for
incorrect or improper use of its products.
AMERILUX HEREBY DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, INCLUDING IMPLIED WARRANTY OF MERCHANTABILITY AND/OR IMPLIED
WARRANTY OF FITNESS FOR A PRACTICAL PURPOSE. AMERILUX SHALL NOT BE LIABLE FOR ANY INCIDENTAL, CONSEQUENTIAL, OR PUNITIVE
DAMAGES.
Load in lbs./sf 20 psf 30 psf 40 psf 50 psf 60 psf 70 psf
8mm 30" 27" 27" 24" 24" 24"
10mm 36" 33" 30" 27" 27" 24"
16 & 25 3-Wall 48" 45" 42" 39" 36" 30"
25mm 5x 60" 55" 48" 44" 42" 39"
See local building codes and agencies for your projects loading requirements.
Load in lbs./sf 20 psf 30 psf 40 psf 50 psf 60 psf 70 psf
8mm 20" 16" na na na na
10mm 24" 20" na na na na
16 & 25 3-Wall 32" 24" 20" na na na
25mm 5x 48" 42" 36" 30" 24" 16"
See local building codes and agencies for your projects loading requirements.
Maximum Rafter Spacing in Inches,
Maximum Purlin/Girt Spacing in Inches, 48" & 72" wide sheet