Hanger Spacing and Rod Size for Horizontal Pipes
Recommended maximum span between hangers - and rod sizes for straight horizontal pipes
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Recommended maximum space between hangers for straight horizontal pipes and tubes can be found in the table below. The values does not apply where loads are concentrated with flanges, valves, specialties, etc. A common rule of thumb is to support load of this type with hangers on both sides of the load.
| Nominal Diameter Pipe NPS (inches) |
|||||
| Recommended maximum space between Hangers (feet) | Recommended Rod Size (inches) | ||||
| Standard Steel Pipe | Copper Tube | ||||
| Water | Steam | Water | Copper | Stainless Steel | |
| 1/2 | 7 | 8 | 5 | 3/8 | 3/8 |
| 3/4 | 7 | 9 | 5 | 3/8 | 3/8 |
| 1 | 7 | 9 | 6 | 3/8 | 3/8 |
| 1 1/2 | 9 | 12 | 8 | 3/8 | 3/8 |
| 2 | 10 | 13 | 8 | 3/8 | 3/8 |
| 2 1/2 | 11 | 14 | 9 | 1/2 | 1/2 |
| 3 | 12 | 15 | 10 | 1/2 | 1/2 |
| 4 | 14 | 17 | 12 | 1/2 | 5/8 |
| 6 | 17 | 21 | 14 | 5/8 | 3/4 |
| 8 | 19 | 24 | 16 | 3/4 | 3/4 |
| 10 | 22 | 26 | 18 | 3/4 | 7/8 |
| 12 | 23 | 30 | 19 | 3/4 | 7/8 |
| 14 | 25 | 32 | 1 | ||
| 16 | 27 | 35 | 1 | ||
| 18 | 28 | 37 | 1 | ||
| 20 | 30 | 39 | 1-1/4 | ||
| 24 | 32 | 42 | 1-1/4 | ||
- 1 ft (foot) = 0.3048 m
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