Direct Fastening Technical Guide , Edition 24
Load reduction with wire hanger angle 1 , 2 , 3
Angle from vertical 0 ° 15 ° 30 ° 45 ° 60 ° Load adjustment factor 1.00 0.96 0.86 0.70 0.50
1 . The tabulated load adjustment values are for loads in the vertical down orientation as depicted in the accompanying figure . 2 . Fastener and clip installation shall be such that the angle of the wire extends away from the nail . 3 . Load adjustment factor shall be multiplied by the applicable X-MW allowable load .
Spiral HVAC single wall with 10 ' hanging space 1 |
|
|
|
Weight ( lbs ) |
|
Diameter |
Circumference |
26 Gauge |
24 Gauge |
22 Gauge |
8 " |
2 ' 2 " |
23 |
29 |
36 |
12 " |
3 ' 2 " |
35 |
44 |
54 |
16 " |
4 ' 2 " |
47 |
59 |
72 |
20 " |
5 ' 3 " |
58 |
73 |
90 |
24 " |
6 ' 3 " |
70 |
88 |
108 |
28 " |
7 ' 4 " |
81 |
103 |
126 |
32 " |
8 ' 5 " |
93 |
117 |
144 |
36 " |
9 ' 5 " |
105 |
132 |
162 |
Spiral HVAC double wall with 10 ' hanging space 1 |
Inside Diameter |
Outside Gauge |
Inside Gauge |
Weight per ft . ( lb / ft ) |
8 " |
26 |
26 |
6 |
12 " |
26 |
26 |
8 |
Weight of rectangular duct , based on 8 ' and 10 ' hanging space 1
Rectangle Duct Size ( height + width )
Weight per ft . 20 Gauge 22 Gauge
Weight / 8 ft . Weight / 10 ft . 8 x 6 " - 3.57 28.56 35.70 10 x 6 " - 4.08 32.64 40.80 12 x 6 " - 4.59 36.72 45.90 14 x 10 " - 6.12 48.96 61.20 16 x 16 " - 8.16 65.28 81.60 24 x 12 " - 9.18 73.44 91.80 36 x 18 " - 13.77 110.16 137.70 40 x 22 " 18.34 - 146.73 183.42 50 x 20 " 20.71 - 165.67 207.08
1 . Weight per foot is calculated based on SMACNA HVAC Systems Duct Design .
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