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Quiz on Determination of Loads and Movements: A Comprehensive Guide II 7 MCQs with Explanations

Determination of Loads and Movements Quiz

1. Vertical Movement Supports while Determination of Loads and Movements

What type of support is recommended for small vertical movement considering Determination of Loads and Movements?

2. Horizontal Movement with Swing

What type of support is suitable for small vertical and significant horizontal movement with a swing within 4° from vertical?

3. Combined Movement Supports

What is recommended when both horizontal and vertical displacements are significant?

4. Supports from Below

What is needed for horizontal movement on supports below the pipe?

5. Suspended Hangers with Horizontal Movement

What is required for considerable horizontal movement with low headroom in suspended hangers?

6. Simplicity First Approach

What is the primary principle when selecting pipe support types?

7. Key Points to Remember

What are the key points to consider when determining pipe support types?

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Short Article on Determining Loads and Movements

Selecting the Right Pipe Supports

The anticipated loads and movements at each support point play a crucial role in determining the appropriate type of pipe support needed. Here’s a breakdown:

Movement Dictates Support Type:

  • Vertical movement: For small vertical movement, simple rod hangers suffice.
  • Horizontal movement: With small vertical and significant horizontal movement, longer rod hangers can accommodate the swing (within 4° from vertical).
  • Combined movement: When both horizontal and vertical displacements are significant, the total movement needs to be normalized to the support axis. Consider relocating the upper connection to reduce angularity.
  • Supported from below: Slides are needed for horizontal movement, or rollers for ensured longitudinal movement. Rollers are typically used for long piping runs on racks.
  • Suspended hangers: Considerable horizontal movement with low headroom requires single- or double-direction trolleys or rollers. For large longitudinal and lateral movements, consider a single-direction trolley aligned with the resultant movement vector.

Simplicity First:

  • Always start with the simplest, most basic rigid support type (e.g., rod hanger).
  • Upgrade to a more complex type only if absolutely necessary.
  • There’s no benefit in using a complex support if a simpler, cheaper one can handle the load and movement requirements.

Key Points to Remember:

  • Evaluate both vertical and horizontal movements.
  • Combine and normalize total movement to the support axis.
  • Consider relocating connections to reduce angularity.
  • Use slides for horizontal movement on supports below the pipe.
  • Use rollers for ensured longitudinal movement or long piping runs on racks.
  • Choose appropriate trolleys or rollers for suspended hangers with significant horizontal movement and low headroom.

By carefully assessing the loads and movements at each support point and adopting a “simplicity first” approach, you can select the most appropriate and economical pipe support type for a safe and reliable piping system.

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