FREE Certified Pipefitter Rigging, Hangers, and Supports Questions and Answers

Question 1

A vertical steam pipe (riser) must be supported at each floor level it passes through.
Which type of support is specifically designed to clamp onto the pipe and transfer the pipe's dead weight to the building's structure at that elevation?

Accepted Answer

Riser Clamp

Answer

Clevis Hanger

Answer

Roller Support

Answer

Pipe Saddle

Question 2

A high-temperature piping system is expected to have significant vertical movement due to thermal expansion. To avoid transferring stress to sensitive equipment, the support must provide a consistent lifting force throughout the entire range of movement. Which hanger is best suited for this application?

Accepted Answer

Constant Support Hanger

Answer

Rigid Rod Hanger

Answer

Variable Spring Hanger

Answer

U-Bolt Anchor

Question 3

When using a two-leg sling bridle to lift a 2,000-pound pipe, what happens to the tension in each sling leg as the horizontal angle between the sling and the pipe decreases (i.e., the slings become flatter)?

Accepted Answer

The tension increases significantly

Answer

The tension decreases

Answer

The tension remains 1,000 pounds

Answer

The tension is unaffected by the angle

Question 4

A pipefitter is installing a trapeze hanger using 1/2-inch threaded rods to support a group of pipes. According to common standards like MSS SP-58, what is the correct practice for securing the nuts on the threaded rods?

Accepted Answer

The rod must extend fully through the nut with some threads visible.

Answer

The rod should be flush with the top of the nut.

Answer

The nut should be tack welded to the rod for security.

Answer

Only a single nut is required below the trapeze channel.

Question 5

Which of the following is the primary purpose of a variable spring hanger?

Accepted Answer

To support a pipe's weight while allowing for vertical thermal movement.

Answer

To rigidly anchor the pipe and prevent all movement.

Answer

To guide the pipe's lateral movement.

Answer

To provide a constant, unchanging supporting force.

Question 6

A rigging plan requires lifting a 4,000 lb load with a two-leg sling bridle where the slings are at a 60-degree angle from the horizontal. What is the approximate tension on each individual sling leg?

Accepted Answer

2,309 lbs

Answer

4,000 lbs

Answer

2,000 lbs

Answer

2,828 lbs

A vertical steam pipe (riser) must be supported at each floor level it passes through.Which type of support is specifically designed to clamp onto the pipe and transfer the pipe's dead weight to the building's structure at that elevation?

A vertical steam pipe (riser) must be supported at each floor level it passes through.
Which type of support is specifically designed to clamp onto the pipe and transfer the pipe's dead weight to the building's structure at that elevation?