Unit 129 Materials

Open Ended

What do you think are the advantages and disadvantages of using copper pipes compared to plastic or low-carbon steel pipes in domestic plumbing?

Multiple Choice

What are the available lengths for copper pipes that can be purchased?

• 3.0m and 6.0m

• 2.0m and 4.0m

• 1.5m and 3.0m

• 5.0m and 7.0m

Open Ended

Explain the properties and uses of R250 copper pipe.

Multiple Choice

Which tool is most suitable for cutting small copper pipework up to 22mm in diameter, especially in situations where access is difficult?

• Junior hacksaw

• Pipe cutter

• Angle grinder

• Bolt cutter

Multiple Select

Select all the correct statements about the pipe cutter shown in the image.

• It is manually adjusted to fit different pipe sizes.

• The handle is turned to open or close the rollers.

• It is used for cutting copper pipes.

• It is powered by electricity.

Open Ended

Discuss why the clips have to be closer together when the pipe is horizontal.

Multiple Choice

What is the main objective of using clips for copper pipes?

• To prevent sagging, noise, movement, and damage to the pipe and fitting.

• To make the pipes look more attractive.

• To increase the water flow in the pipes.

• To reduce the cost of installation.

Open Ended

Compare the uses and advantages of plastic interlocking pipe clips and plastic single push-in pipe clips.

Multiple Choice

Which of the following clips is sometimes used under floorboards?

• Plastic interlocking pipe clip

• Plastic single push-in pipe clip

• Plastic nail-on clip

• Copper saddle clip

Multiple Select

Select all the features that make brass school board clips suitable for light commercial or industrial installations.

• Provides more resistance to tube movement

• Gives more resistance to subsequent damage

• Is less rigid than other clips

• Is recommended for decorative purposes

Open Ended

Why is it important to identify and use the correct tools when fabricating plastic pressure pipe?

Multiple Choice

What are the two ways plastic pressure pipe is supplied?

• In straight lengths and coils

• In sheets and rolls

• In blocks and strips

• In tubes and rods

Multiple Select

Which of the following are common sizes for domestic plastic pressure pipe installations?

• 10.0mm

• 15.0mm

• 22.0mm

• 25.0mm

Open Ended

Explain why plastic pressure pipe is preferred over copper pipe in certain installations.

Open Ended

Why is it essential to use inserts when fitting plastic pressure pipe?

Open Ended

Discuss why the clipping distances are so much smaller than for copper pipe.

Multiple Choice

What is the main objective of using clips on plastic pressure pipes?

• To increase water flow

• To prevent sagging, movement, and damage

• To make installation faster

• To reduce pipe cost

Multiple Choice

Why is it important to create a watertight seal during plumbing installation?

• To prevent leaks and water damage

• To make the installation look neat

• To reduce installation time

• To avoid using extra materials

Multiple Select

Which of the following are common types of waste pipe fittings?

• Push-fit

• Compression

• Threaded

• Soldered

Multiple Choice

After cutting a waste pipe, why must all burrs be removed?

• To prevent leaks

• To avoid damaging the O-ring and seals

• To make the pipe easier to paint

• To increase water pressure

Open Ended

After learning about the materials used in connecting pipes and fittings to appliances, what questions do you still have or what would you like to know more about?

Multiple Choice

What are the two most common sizes for domestic copper pipe and fittings?

• 15mm and 22mm

• 10mm and 20mm

• 18mm and 25mm

• 12mm and 24mm