Overview
Engineering reference data for Loads Hanging Rods in mechanics.
Key Formulas
Newton's Second Law
Force = mass × acceleration.
Work
Work = force × displacement × cos(angle).
Kinetic Energy
Energy of motion.
Potential Energy
Gravitational potential energy.
Variables
| Symbol | Description | Unit |
|---|---|---|
| Force | N | |
| Mass | kg | |
| Acceleration | m/s² | |
| Velocity | m/s |
Design Considerations
- Stress Limits: The maximum loads listed are based on an allowable tensile stress of 9 kpsi. This represents a 25% reduction from the original 12 kpsi allowable stress.
- Piping System Hangers: Hangers supporting steam, water, air, or gas piping systems must be designed to carry the weight of the pipe, insulation, valves, other equipment, and the water for hydrostatic pressure testing. This total load must not exceed 80% of the hanger's yield strength.
- Yield Strength Guideline: For steel of unknown properties, the supporting stress should not exceed 16 kpsi.
- Minimum Rod Diameter: A rod diameter less than 3⁄8 in (12 mm) is not recommended for use as support.