Product Brochure

107
TECHNICAL INFORMATION
Figure 2 — Single Span
Single Span
Intermediate Span Intermediate Span Intermediate Span
End Span
Figure 1 — Long Continuous Run
End Span
End Span
Figure 3 — Double Span
Span (ft)
B-906
G-956
B-900-M
G-975-M G-953
B-900
G-975
B-901
G-950, G-965 B-900-2A
B-902
G-955
6 .004 .000 .000 .000 .000 .000 .000
8 .009 .002 .001 .000 .000 .000 .000
10 – .005 .004 .003 .001 .000 .000
12 – .010 .007 .006 .004 .001 .001
14 – – – .012 .007 .002 .002
16 – – – .020 .011 .004 .004
18 – – – – .018 .007 .006
20 – – – – – .010 .009
* For 8-foot fixtures reduce the deflection constant by 50%. This table is for normal weight fixtures - the constant “.000” infers negligible deflection.

The deflection at the center of an intermediate span will be the deflection constant (.006) times the fixture weight (30 lbs) or .18 inches.
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Technical information
To select proper channel
The hanger spacing is often determined by the type
of building construction. The deflection then will
determine the proper channel since this deflection
should not exceed ½ of the span.
To estimate the deflection at the center of an
intermediate span in long continuous runs (Figure 1),
multiply the weight of a single fixture times the
applicable deflection constant (from table).
This deflection also applies to the end span in
Figure 1 and the single span in Figure 2 if the

of the span.

(Figure 3), the deflection of end spans (Figure 3)
will be doubled.
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
End span   
End span End span
Single span
Figure 2 - Single span Figure 3 - Double span
Figure 1 - Long continuous run