Technical Bulletin

3
FRTR01--WW-ENG
Property of Panduit – 6/1/2011
Wyr-Grid® Cable Tray Load Rating Report
Limits on the deflection of support brackets, such as trapeze and cantilever brackets, are also set forth in EN
61537:2007. The maximum deflection of support brackets is 1/20
th
of the support width. The maximum
deflection of the trapeze bracket occurs in the center, as shown in Figure 3, while the maximum deflection of the
cantilever bracket occurs at the end, as shown in Figure 4.
Figure 3: Trapeze Bracket Deflection
Figure 4: Cantilever Bracket Deflection
End Deflection: D
Max
= W / 20
W = bracket width
D
Max
= W/20
W
D
Max
=
W/20
W