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Materials and densities

Authored by Luke Rock

Construction

Vocational training

Materials and densities
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12 questions

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1.

FILL IN THE BLANK QUESTION

1 min • 1 pt

What are the 3 most common pipework materials used in plumbing?

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The coefficient of linear expansion for copper is 0.000016, but what does this mean?

How much a material shrinks

How much a material doubles in size

How much a materials length changes

How much a material desolves

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What grade are straight lengths of copper used predominantly in plumbing?

R250

R220

R290

R320

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What colour signifies that a pipe is carrying gas?

Green

Blue

White

Yellow

5.

OPEN ENDED QUESTION

3 mins • 1 pt

What are the 3 grades of LCS and their colours?

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6.

OPEN ENDED QUESTION

3 mins • 1 pt

Polybutylene is micro-porous, what does this mean?

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7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What is this?

Maximum density polyethylene

Medium durability polyethylene

Medium density polyethylene

Moisture defying polyethylene

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