Third Party Verification Claim

Mr. John Ruprecht – Clear View Glass Railings
AET Project No. 05-20608
October 13, 2020
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using criteria specific to Clear View’s panels and support configuration.
Hercules Glass Testing
Testing was performed on the Hercules Glass panel by Clear View’s glass supplier, to simulate the
forces created by 800# horizontal and vertical point loads on the panel (loads are not required to be
simultaneous). The vertical load test is fairly straightforward and is shown in photo 1. Note: the intent
was to load the panel to failure; however, the testers ran out of sandbags at 2,520 pounds, without
failure.
Photo 1: Panel loaded vertically with 2,520 pounds.
Given the difficulty of pushing an 800# load horizontally against the panel, a test rig was set up that
supports the panel on its side and places sandbags vertically on the panel. The panel is supported 28”
from the top of panel (creating a 28” cantilever), with a heavy counterweight holding down the bottom
of the panel mounted in its spigots. Sandbags were placed at the top edge of the panel until failure. See
Diagram 1 and photo 2. The panel failed after one minute with 820 pounds loaded on its edge, which is
equivalent to 547 pounds for a 42” tall panel. Using a finite element computer model, it was determined
that the stresses caused by the 547 pound point load are equivalent to those caused by a 147 mph wind.