Materials and densities
Authored by Luke Rock
Construction
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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
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
What is this?
Maximum density polyethylene
Medium durability polyethylene
Medium density polyethylene
Moisture defying polyethylene
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