Twin City Backward Inclined Hinged Restaurant Exhaust Fan - BHRE - IM-610 - Manual (Page 3)

Twin City IM-610 3
Table 2. Roof Curb Mounting to Building Structure
BHRE Size Curb Cab Roof Curb
Minimum Fasteners Outside
Flange
Roof
Opening Steel Anchoring Concrete Anchoring Timber Anchoring
105
20 x 20
(508 x 508)
18 1/2 x 18 1/2
(470 x 470)
3 3 3
22 1/2 x 22 1/2
(571 x 571)
13 1/2 x 13 1/2
(343 x 343)
122
23 x 23
(584 x 584)
21 1/2 x 21 1/2
(546 x 546)
3 3 3
25 1/2 x 25 1/2
(648 x 648)
16 1/2 x 16 1/2
(419 x 419)
135
25 x 25
(635 x 635)
23 1/2 x 23 1/2
(597 x 597)
3 3 3
27 1/2 x 27 1/2
(698 x 698)
18 1/2 x 18 1/2
(470 x 470)
150
27 1/2 x 27 1/2
(698 x 698)
26 x 26
(660 x 660)
3 3 3
30 x 30 (762 x
762)
21 x 21
(533 x 533)
165
29 x 29
(737 x 737)
27 1/2 x 27 1/2
(698 x 698)
3 3 3
31 1/2 x 31 1/2
(800 x 800)
22 1/2 x 22 1/2
(571 x 571)
182
31 1/2 x 31 1/2
(800 x 800)
30 x 30
(762 x 762)
3 3 4
34 x 34 (864 x
864)
25 x 25
(635 x 635)
200
34 x 34
(864 x 864)
32 1/2 x 32 1/2
(825 x 825)
3 3 4
36 1/2 x 36 1/2
(927 x 927)
27 1/2 x 27 1/2
(698 x 698)
222
38 x 38
(965 x 965)
36 1/2 x 36 1/2
(927 x 927)
3 4 5
40 1/2 x 40 1/2
(1029 x 1029)
31 1/2 x 31 1/2
(800 x 800)
245
41 1/2 x 41 1/2
(1054 x 1054)
40 x 40
(1016 x 1016)
4 4 5
44 x 44 (1118 x
1118)
35 x 35
(889 x 889)
1.00
Roof Opening
[3/4" (19 mm) per side]
Outside of Roof Curb
1 1/2" (38 mm)
less than Fan Curb
2" (51 mm) Min. Embedment (203 - 457 mm)
Curb Height
8" - 18"
[3/4" (19 mm) per side]
Outside of Roof Curb
1 1/2" (38 mm)
less than Fan Curb
(203 - 457 mm)
Curb Height
8" - 18"
1-1/2" (38 mm) Min. Embedment
Roof Opening
Center fasteners
(203 - 457 mm)
Curb Height
8" - 18"
[3/4" (19 mm) per side]
Outside of Roof Curb
1 1/2" (38 mm)
less than Fan Curb
Roof Opening
Outside Flange
Outside Flange
Outside Flange
2.00
Corner Detail Of
All Structures - Typ
2000 PSI Min. Concrete Strength
1/4" Dia. S.S. Hilti Kwik bolt expansion
anchors or equal.
4-1/2" (114 mm) min. spacing.
Located at each corner as shown.
Each side at center of unit.
Add additional fasteners to satisfy.
#10 Zinc plated wood screw or equal.
Located at each corner as shown.
Each side at center of unit.
3/4" (19 mm) min. spacing, 14-1/2" (368 mm) max. spacing.
Add additional fasteners to satisfy.
Wood Buck
Min. S.G. = .55
#12-14 Dril-flex self drilling screw or equal.
Located at each corner as shown.
Each side at center of unit.
3/4" (19 mm) min. spacing, 14-1/2" (368 mm) max. spacing.
Add additional fasteners to satisfy.
Min. 12 ga. or 1/8" (3 mm) thick steel member
Concrete Anchoring Instructions for Roof Curbs
Wood Anchoring Instructions for Roof Curbs
Steel Anchoring Instructions for Roof Curbs
Fig. 3
Figure 4.