Select Proper Angle Irons - BIG ASS FANS Pivot Installation Manual

MOUNTING STRUCTURE: BAR JOISTS
If you are installing the fan to an I-beam and have attached the upper yoke, proceed to "Hanging the Fan."
WARNING: The following instructions assume that the customer's roof structure from which the fan will
be hung is of sound construction, undamaged, and capable of supporting loads of the fan and its method
of attachment. It is the sole responsibility of the customer to verify that the roof structure is adequate for
fan installation. Big Ass Fans recommends consulting a structural engineer prior to fan installation.
WARNING: Never use beam clamps when mounting the fan to angle irons! Beam clamps are only intended
for I-beam installations.
CAUTION: Do not install the fan from a single purlin, truss, or bar joist.
CAUTION: Unsupported angle iron spans should not exceed 12 ft (3.7 m).
CAUTION: The angle irons must be fastened to the roof structure at each end.

1. Select proper angle irons

Follow the table below when selecting angle irons for fan installation. Note: Angle irons and angle iron hardware
are not included with the fan.
Angle iron span
(between mounting points)
6 ft (1.8 m) or less
over 6 ft to 8 ft (1.8 m to 2.4 m)
over 8 ft to 12 ft (2.4 m to 3.7 m)
*Two pairs of angle irons. Pairs should be placed back to back and fastened in center (see step 3).
8
ATTENTION
Minimum angle iron dimensions
2.5" x 2.5" x 0.25" (6.4 cm x 6.4 cm x 0.6 cm)
3" x 3" x 0.25" (7.6 cm x 7.6 cm x 0.6 cm)
3" x 3" x 0.25" (7.6 cm x 7.6 cm x 0.6 cm)
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(W x H x T)
Angle Iron Side View
(see table for dimensions)
Height
ALL RIGHTS RESERVED.
Number of angle
irons needed
2
2
4*
Thickness
Width