Threaded Rods - Loads in Imperial Units (original) (raw)
Weight rating of threaded hanger rods.
Load capacities of threaded hanger rods are indicated below:
Threaded Rods - Maximum Loads - Imperial Units
| Nominal Rod Diameter (in) | Root Area of Thread (in2) | Maximum Load 1) | |
|---|---|---|---|
| lb | kg | ||
| 3/8 | 0.07 | 600 | 270 |
| 1/2 | 0.13 | 1100 | 500 |
| 5/8 | 0.20 | 1800 | 820 |
| 3/4 | 0.30 | 2700 | 1220 |
| 7/8 | 0.42 | 3800 | 1720 |
| 1 | 0.55 | 4900 | 2220 |
| 1 1/8 | 0.69 | 6200 | 2810 |
| 1 1/4 | 0.89 | 8000 | 3630 |
| 1 1/2 | 1.29 | 11600 | 5260 |
| 1 3/4 | 1.74 | 14700 | 6670 |
| 2 | 2.30 | 20700 | 9390 |
| 2 1/4 | 3.02 | 27200 | 12340 |
| 2 1/2 | 3.72 | 33500 | 15200 |
| 3 | 5.62 | 50600 | 22960 |
| 3 1/4 | 6.72 | 60500 | 27440 |
| 3 1/2 | 7.92 | 71300 | 32340 |
| 4 | 10.6 | 95400 | 43270 |
| 4 1/2 | 13.7 | 123000 | 55780 |
| 5 | 17.2 | 154000 | 69900 |
- The maximum loads in the table above are based on allowable tensile stress of 12 kpsi - reduced by 25% to 9 kpsi allowable stress.
- 1 kg = 9.81 N
- Threaded Rods - Proof Load Capacities in Metric Units
- Mass and Weight - the difference
Note that hangers supporting steam, water, air or gas piping systems should be able to carry the weight of piping, insulation, valves and other equipment - and water for hydrostatic pressure testing - without exceeding 80% of the supporting hangers yield strength (not exceeding 16 kpsi for steel of unknown properties)
Recommended Rod Sizes
Recommended rod sizes for individual pipes:
Recommended Rod Sizes
| Pipe Size_(in)_ | Rod Size_(in)_ |
|---|---|
| < 2 | 3/8 |
| 2 1/2 - 3 1/2 | 1/2 |
| 4 - 5 | 5/8 |
| 6 | 3/4 |
| 8 - 12 | 7/8 |
| 14 - 16 | 1 |
| 18 | 1 1/8 |
| 20 | 1 1/4 |
| 24 | 1 1/2 |
Rod diameter less than 3⁄8 in (12 mm) is not recommended as support.
Related Topics
Pipe, tube and fittings sizes and dimensions. Inside and outside diameters, weights and more.
Bolts, nuts and threaded rods - torque, tension and loads.
Related Documents
Calculate required bolt torque.
Hooke's law - force, elongation and spring constant.
Recommended maximum support span between hangers - and rod sizes for straight horizontal pipes.
Dimensions of metric threads according ISO 724.
Minimum ultimate tensile and proof loads for metric bolts with coarse or fine threads.
Recommended thightening torque metric bolts.
Weight of round bars.
Safe loads of shackles.
Endurance limits and fatigue stress for steels.
Stress is force per unit area - strain is the deformation of a solid due to stress.
Proof load capacities of metric threaded steel rods.
Stress and deformation of vertical beams due to own weight.
Young's Modulus (or Tensile Modulus alt. Modulus of Elasticity) and Ultimate Tensile Strength and Yield Strength for materials like steel, glass, wood and many more.
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