Types of Drainage Pipes and Fittings: Comprehensive Guide for Construction

Question 1

Which type of pipe joint is commonly employed to connect PVC drainage pipes?

Accepted Answer

Solvent weld joint

Answer

Threaded joint

Answer

Mechanical joint

Question 2

What is the primary purpose of a trap in a drainage system?

Accepted Answer

Block unpleasant odors from escaping

Answer

Prevent freezing of water in pipes

Answer

Regulate the flow of water

Question 3

Identify the fitting used to alter the direction of a drainage pipe at a 90-degree angle.

Accepted Answer

Elbow

Answer

Tee

Answer

Cross

Question 4

What is the primary function of a cleanout in a drainage system?

Accepted Answer

Provide access for cleaning and inspection

Answer

Prevent blockages in pipes

Answer

Control the flow of water

Question 5

Which type of fitting is used to connect a drainage pipe to a fixture?

Accepted Answer

Tailpiece

Answer

Trap

Answer

Union

Question 6

What is the primary purpose of a vent in a drainage system?

Accepted Answer

Allow air to enter the system

Answer

Prevent water from backing up

Answer

Control the flow of water

Question 7

Which of the following is not a common material used for drainage pipes?

Accepted Answer

Copper

Answer

Polyvinyl chloride (PVC)

Answer

Acrylonitrile-butadiene-styrene (ABS)

Answer

Cast iron

Question 8

Which type of fitting is used to connect two pipes of different sizes?

Accepted Answer

Reducer

Answer

Coupling

Answer

Elbow

Answer

Tee

Question 9

What is the purpose of a trap in a drainage system?

Accepted Answer

To prevent sewer gases from entering the building

Answer

To collect and remove debris

Answer

To control the flow of water

Answer

To support the piping system

Question 10

What is the correct method for joining PVC pipes?

Accepted Answer

Solvent welding

Answer

Threaded connections

Answer

Compression fittings

Answer

Mechanical joints

Question 11

What is the purpose of a cleanout in a drainage system?

Accepted Answer

To provide access for cleaning and maintenance

Answer

To vent the system

Answer

To support the piping system

Answer

To regulate the flow of water

Question 12

A small bathroom's drainage system should be designed. Consider elements like slope, materials, and fittings to ensure smooth water flow.

Accepted Answer

Select 1 1/2-inch PVC pipes, 90-degree elbows, and maintain a slope of 1/4 inch per foot for drainage.

Answer

Utilize 2-inch cast iron pipes with T-fittings and adhere to a slope of 1/8 inch per foot for drainage.

Answer

Use 1-inch ABS pipes, Y-fittings, and maintain a slope of 1/2 inch per foot for drainage.

Question 13

Which of the following materials is NOT commonly used for drainage pipes in the United States?

Accepted Answer

Copper

Answer

Polyvinyl chloride (PVC)

Answer

Acrylonitrile butadiene styrene (ABS)

Answer

Cast iron

Question 14

What is the primary advantage of using ABS pipes over PVC pipes for drainage systems?

Accepted Answer

Higher temperature resistance (up to 210°F)

Answer

Lower cost

Answer

Easier to cut and assemble

Answer

More durable

Question 15

Which fitting is used to connect two sections of drainage pipe at a 90-degree angle?

Accepted Answer

Elbow

Answer

Tee

Answer

Cross

Answer

Reducer

Question 16

What is the main purpose of using primers and cements when installing PVC pipes for drainage systems?

Accepted Answer

To improve adhesion between the pipe and fittings, creating a watertight seal

Answer

To prevent rust and corrosion

Answer

To increase the strength of the joints

Answer

To make the installation process easier

Question 17

What is the main advantage of using a solvent weld joint for drainage pipes compared to other joining methods?

Accepted Answer

Creates a stronger and more durable joint, resistant to leaks

Answer

Easier and faster to install

Answer

Requires less specialized equipment

Answer

Can be used on any type of pipe material

Question 18

Which type of drainage pipe is made of a lightweight, corrosion-resistant thermoplastic material?

Accepted Answer

Polyvinyl Chloride (PVC)

Answer

Acrylonitrile Butadiene Styrene (ABS)

Answer

Cast Iron

Answer

Polyethylene (PE)

Question 19

Which type of fitting is used to change the direction of a drainage pipe at a 90-degree angle?

Accepted Answer

Elbow

Answer

Tee

Answer

Coupling

Answer

Reducer

Question 20

What is the primary purpose of a trap in a drainage system?

Accepted Answer

To prevent sewer gases from entering the building

Answer

To collect and remove debris from the drain

Answer

To regulate the flow of water through the drain

Answer

To provide an access point for cleaning

Question 21

Which type of material is typically used to seal the joints between drainage pipes and fittings?

Accepted Answer

Primer and solvent cement

Answer

Teflon tape

Answer

Silicone caulk

Answer

Epoxy resin

Question 22

Which of the following is NOT an advantage of using PVC drainage pipes?

Accepted Answer

High strength

Answer

Lightweight and easy to handle

Answer

Corrosion-resistant

Answer

Low cost

Question 23

What is the key difference between a Schedule 40 and a Schedule 80 drainage pipe?

Accepted Answer

Thickness and strength

Answer

Length and diameter

Answer

Material composition

Answer

Cost

Question 24

Which property is NOT characteristic of PVC pipes used in plumbing systems?

Accepted Answer

Can withstand extremely high temperatures

Answer

Lightweight and easy to handle

Answer

Resistant to chemicals and corrosion

Answer

Easily joined using solvent cement

Question 25

Which drainage pipe material offers the best combination of strength, durability, and resistance to corrosion?

Accepted Answer

Cast iron

Answer

PVC

Answer

ABS

Answer

Polyethylene

Question 26

Which drainage fitting is commonly used to connect two pipes at a 90-degree angle?

Accepted Answer

Elbow fitting

Answer

Tee fitting

Answer

Cross fitting

Answer

Union fitting

Question 27

What is the primary purpose of a cleanout fitting in a drainage system?

Accepted Answer

To provide access for cleaning and maintenance

Answer

To seal off the end of a drain line

Answer

To change the direction of a drain line

Answer

To regulate the flow of water

Question 28

Which material is NOT typically used in the production of cast iron drainage pipes?

Accepted Answer

PVC

Answer

Iron

Answer

Carbon

Answer

Silicon

Question 29

Which type of adhesive is specifically designed for bonding ABS drainage pipes and fittings?

Accepted Answer

ABS cement

Answer

PVC cement

Answer

Epoxy

Answer

Butyl tape

Question 30

Which of the following is a significant safety hazard associated with handling cast iron drainage pipes?

Accepted Answer

Lead poisoning

Answer

Asbestos exposure

Answer

Electrical shock

Answer

Chemical burns

Question 31

What is the primary purpose of a vent stack in a drainage system?

Accepted Answer

To allow air into the system to prevent siphoning

Answer

To collect and dispose of waste liquids

Answer

To provide an access point for cleaning or maintenance

Answer

To regulate the flow of water

Question 32

Which pipe fitting is utilized to alter a drainage line's direction?

Accepted Answer

Elbow

Answer

Coupling

Answer

Tee

Question 33

In a drainage system, what is the primary role of a vent?

Accepted Answer

Releasing gases

Answer

Preventing backflow

Answer

Regulating water pressure

Question 34

Cleanouts in a drainage system serve what purpose?

Accepted Answer

Providing access for cleaning

Answer

Regulating airflow

Answer

Preventing leaks

Question 35

What is the main advantage of using ABS drainage pipes?

Accepted Answer

Lower cost and easier installation

Answer

Higher durability

Answer

Resistance to high temperatures

Question 36

Which type of fitting is used to create a 90-degree angle in a drainage system?

Accepted Answer

Elbow

Answer

T-fitting

Answer

Reducing coupling

Question 37

Which factor is crucial when selecting a drainage pipe for below-ground installation?

Accepted Answer

Soil type and drainage requirements

Answer

Pipe diameter

Answer

Flow rate

Question 38

What is the purpose of a cleanout plug in a drainage system?

Accepted Answer

To allow access for inspection and cleaning

Answer

To prevent water from backing up

Answer

To regulate the flow of water

Question 39

Which type of joint is commonly used to connect ABS drainage pipes?

Accepted Answer

Solvent cement

Answer

Threaded fittings

Answer

Compression fittings

Question 40

What is the maximum allowable distance between supports for a horizontal drainage pipe?

Accepted Answer

6 feet

Answer

4 feet

Answer

8 feet

Question 41

What is the main purpose of a trap in a drainage system?

Accepted Answer

To prevent sewer gases from entering the building

Answer

To hold water and prevent clogs

Answer

To regulate the flow of water

Question 42

What is the primary function of a drainage trap in a plumbing system?

Accepted Answer

To prevent sewer gases and odors from entering the building

Answer

To retain water for reuse

Answer

To filter out debris from wastewater

Question 43

Which type of drainage fitting is used to make a 90-degree turn in a drainage pipe run?

Accepted Answer

Elbow

Answer

Tee

Answer

Reducer

Answer

Cross

Question 44

PVC drainage pipes are known for several advantages. Which of the following is a key characteristic of PVC drainage pipes?

Accepted Answer

Lightweight and corrosion-resistant

Answer

Low cost and ease of installation

Answer

Flexibility and ability to be bent easily

Answer

Strength and durability under heavy loads

Question 45

When selecting the type of drainage pipe for a specific application, which factors should be primarily considered?

Accepted Answer

Intended purpose, material properties, and environmental conditions

Answer

Size and shape requirements solely

Answer

Cost and availability only

Answer

Brand reputation and popularity

Question 46

Which of the following is a common cause of blockages and issues in drainage systems?

Accepted Answer

Accumulation of grease and hair

Answer

Structural damage to pipes

Answer

Improper pipe installation

Answer

Electrical faults

Question 47

Which specialized tool is commonly used to cut drainage pipes accurately and cleanly?

Accepted Answer

Pipe cutter

Answer

Screwdriver

Answer

Pliers

Answer

Hacksaw

Question 48

Maintaining a proper slope in drainage pipes is crucial for efficient drainage. What is the primary reason for this?

Accepted Answer

To ensure proper flow of wastewater and prevent blockages

Answer

To enhance the aesthetic appearance of the drainage system

Answer

To reduce noise generated by the drainage system

Answer

To increase water pressure within the system

Question 49

Which type of drainage pipe is known for its exceptional durability and resistance to corrosion?

Accepted Answer

Cast iron

Answer

ABS

Answer

PVC

Answer

Polyethylene

Question 50

What is the main material used in the manufacturing of ABS drainage pipes?

Accepted Answer

Acrylonitrile butadiene styrene (ABS)

Answer

Polypropylene

Answer

Polyethylene

Answer

Cast iron

Question 51

Which type of pipe fitting is specifically designed to alter the direction of a drainage pipe run?

Accepted Answer

Elbow

Answer

Tee

Answer

Union

Answer

Reducer

Question 52

What is the primary advantage associated with the use of PVC drainage pipes in plumbing systems?

Accepted Answer

Lightweight and ease of installation

Answer

Exceptional strength and durability

Answer

Superior corrosion resistance

Answer

High-temperature resistance

Question 53

Which type of pipe fitting is used to connect pipes of different diameters, ensuring a smooth transition in the drainage system?

Accepted Answer

Reducer

Answer

Coupling

Answer

Tee

Answer

Elbow

Question 54

What is the primary function of a cleanout fitting in a drainage system?

Accepted Answer

To provide convenient access for cleaning and maintenance

Answer

To trap sediment and debris

Answer

To change the direction of the drainage pipe

Answer

To connect pipes of different materials

Question 55

Which of the following materials is not utilized in the production of cast iron drainage pipes?

Accepted Answer

Aluminum

Answer

Graphite

Answer

Silicon

Answer

Iron

Question 56

What is the main disadvantage associated with the use of cast iron drainage pipes, limiting their practicality in certain applications?

Accepted Answer

Heaviness and difficulty in installation

Answer

Susceptibility to corrosion over time

Answer

Limited availability in various sizes and configurations

Answer

High cost compared to other pipe materials