SPED Pipe Support Design

Question 1

What is the primary purpose of a pipe anchor in a piping system?

Accepted Answer

To restrain all pipe movement in all directions at a fixed point

Answer

To allow free thermal movement of the pipe

Answer

To support the dead weight of the pipe only

Answer

To prevent corrosion at structural contact points

Question 2

Which type of pipe support allows axial movement but restricts lateral movement?

Accepted Answer

Guide

Answer

Anchor

Answer

Constant-effort hanger

Answer

Strut

Question 3

Which MSS standard governs the materials, design, and manufacture of pipe hangers and supports?

Accepted Answer

MSS SP-58

Answer

ASME B31.3

Answer

MSS SP-69

Answer

ASME B16.5

Question 4

What is the primary advantage of a variable spring hanger over a rigid rod hanger?

Accepted Answer

It accommodates vertical thermal movement while continuously supporting pipe weight

Answer

It provides greater lateral restraint under seismic loads

Answer

It requires no periodic inspection or maintenance

Answer

It is less expensive to procure and install

Question 5

Which pipe support device allows slow thermal movements but locks up rigidly under dynamic loads such as vibration or seismic events?

Accepted Answer

Snubber

Answer

Rigid rod hanger

Answer

Dummy leg

Answer

Saddle support

Question 6

What is a 'dummy leg' in pipe support design?

Accepted Answer

A short pipe extension welded to the main pipe to transfer load to a structural support

Answer

A temporary wood block used during construction alignment

Answer

A decorative cap on an unused pipe branch

Answer

A type of constant-load spring hanger

Question 7

According to MSS SP-69, support spacing tables are primarily based on which variables?

Accepted Answer

Pipe size, fluid specific gravity, and allowable sag

Answer

Insulation color and pipe material only

Answer

Ambient temperature and wind speed

Answer

Pipe wall thickness and flange rating