4A. Fasten Single Angle Irons To Roof Structure Mounting Points - BIG ASS FANS Isis Guide D'installation

4a. Fasten single angle irons to roof structure mounting points

If installation requires double angle irons, i.e., span is greater than 8 ft (2.4 m), proceed to step 4b.
CAUTION: The angle irons must be fastened to the roof structure at each end.
Fasten the angle irons to the roof structure mounting points at each end with customer-supplied Grade 8 hardware as shown. Do not
tighten the hardware until the fan has been mounted to the angle irons. Note: Big Ass Fans recommends orienting the angle irons
so that the horizontal legs are facing each other. Refer to the illustration below.
Proceed to step 5.
Angle Iron Hardware (Customer-Supplied):
a. (4) 1/2-13 or M12 Bolt
b. (8) 1/2" or M12 Washer
c. (4) 1/2" or M12 Nut
a
b
d
b
c
Mounting Structure: Bar Joists (cont.)
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Isis
®
Angle Iron Hardware (BAF-Supplied):
d. (8) 3" Square Washer (see diagram)
Square Washer
(7.6 cm)
Ø 9/16"
(1.4 cm)
Thickness:
1/4" (6 mm)
ALL RIGHTS RESERVED
3"
3"
(7.6 cm)
11