Question 1

Which of the following is NOT commonly used to remove impediments from clogged drains?

Accepted Answer

Camera equipment is typically used for inspection and diagnosis of plumbing issues rather than for directly removing clogs or blockages.

Question 2

A common term used for cast iron piping is:

Accepted Answer

Soil pipe is a common term used for cast iron piping, especially when referring to its use in sanitary drain, waste, and vent (DWV) applications.

Question 3

Why was lead such a popular material to use for piping and shower pans?

Accepted Answer

Lead was popular for piping and shower pans because it is impervious to moisture, making it a durable and reliable material for preventing leaks.

Question 4

When holes appear in old lead piping, the entire piping system should be replaced with new lead pipe.

Accepted Answer

Lead pipes are hazardous to health, and when they fail, they should be replaced with safer materials like copper or PEX, not with new lead pipe.

Question 5

Which of the following commonly attracts tree roots?

Accepted Answer

Leaking pipes can attract tree roots due to the moisture they provide. Trees naturally seek out water sources, and a leaking pipe offers a consistent supply, encouraging roots to grow towards and sometimes into the pipes, potentially causing damage.

Question 6

What is a sink rod?

Accepted Answer

A sink rod is specifically designed for cleaning lavatory or sink drains, characterized by its relatively short length and functionality in removing clogs from these specific types of drains.

Question 7

Drainage problems in residential systems are generally due to residents overtaxing the system, and the age of the structure.

Accepted Answer

Drainage problems in residential systems can indeed be caused by residents overtaxing the system (e.g., flushing inappropriate items down the toilet, pouring grease down the sink) and the age of the structure, as older pipes and drainage systems may deteriorate or become clogged over time.

Question 8

When servicing and repairing commercial drainage problems, it is important to:

Accepted Answer

All the options listed are crucial steps in servicing and repairing commercial drainage problems. Being aware of toxic substances ensures safety, diagnosing the problem correctly ensures efficiency and effectiveness, and obtaining as much information as possible before using equipment ensures that the right approach and tools are used for the job.

Question 9

What are subsoil drains specifically designed for?

Accepted Answer

Subsoil drains are specifically designed for recovering groundwater from the surrounding earth, helping to manage water levels and prevent waterlogging or excessive moisture in the soil.

Question 10

A fish tape is a flat steel ribbon, available in various sizes, that is used to clear drains.

Accepted Answer

The answer of A fish tape is a flat steel...

Question 11

Which of the following is an example of exfiltration?

Accepted Answer

Exfiltration in the context of environmental engineering or infrastructure refers to the leakage of wastewater or sewage from a containment system, such as pipes, into the surrounding environment. Therefore, a sewage leak is an example of exfiltration, as it involves the unintended escape of sewage from the system designed to contain it.

Question 12

Which of the following is an example of infiltration?

Accepted Answer

Infiltration refers to the process where water on the ground surface enters the soil. "Soil flowing into failed lines" implies that water is moving into the soil, which is an example of infiltration.

Question 13

Which of the following is NOT a type of plastic typically used in piping?

Accepted Answer

Multi-acrylic bichloride is not a recognized type of plastic used in piping. Polyvinyl chloride (PVC), acrylonitrile butadiene styrene (ABS), and coextruded composites are all common materials for pipes.

Question 14

Due to their use in the war effort, which piping materials were in short supply for the public during World War II?

Accepted Answer

During World War II, materials such as copper, steel, and cast iron were in high demand for the war effort, leading to shortages for civilian use. These materials were essential for manufacturing weapons, vehicles, and other military equipment.

Question 15

Which problem is most likely caused by random material failures or improper installation?

Accepted Answer

Fitting failures are most likely caused by random material failures or improper installation, as these issues directly affect the integrity and functionality of the fittings used in various systems.

Quiz 3: Service and Repair: DWV Systems