Unit 302

Question 1

Which of the following would be the most suitable masonry drill bit to use to make a hole in brickwork for a brown plastic plug?

Answer 1

b 7.0 mm HSS bit

Question 2

Which of the following is the British Standard for the manufacture of copper pipes used in the plumbing and heating industry?

Answer 2

d BS EN 1057

Question 3

What is the minimum total length of pipe required to machine bend 15 mm copper pipe to 90°?

Answer 3

c 100 mm

Question 4

LCS pipe is given a colour band to indicate its grade. What grade is indicated by a blue band?

Answer 4

b Medium

Question 5

Which of the following plastic pipe materials is commonly used for the distribution of underground mains cold water supplies?

Answer 5

MDPE (Blue)

Question 6

What is the maximum diameter of hole that can be drilled in a joist?

Answer 6

25% of the depth of the joist

Question 7

When installing 28 mm copper pipe in the horizontal plane, what is the recommended clipping distance?

Answer 7

1.8 m

Question 8

Which of the following is the maximum recommended clip distance for 40 mm plastic waste pipe in the vertical position?

Answer 8

1.2 m

Question 9

What is the most common type of copper tube used on above ground hot and cold water systems ?

Answer 9

R250 half hard lengths

Question 10

What type of plastic pipe is used in under floor heating circuits ?

Answer 10

PEX (Polyethylene pipe)

Question 11

On a Large construction site what documentation is used to identify when plumbing work should take place ?

Answer 11

A work Programme

Question 12

Which is a type of plastic used in above ground sanitary pipework systems ?

Answer 12

ABS (Acrylonitrile Butadiene Styrene)