Common Plumbing Processes and Techniques Quiz

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?

• 5.5 mm HSS bit

• 7.0 mm HSS bit

• 5.5 mm SDS bit

• 7.0 mm SDS bit

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

• BS EN 806

• BS 1710

• BS 1212

• BS EN 1057

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

• 60 mm

• 95 mm

• 100 mm

• 115 mm

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

• Light

• Medium

• Heavy

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

• Polybuthylene

• ABS

• PVCu

• MDPE

Which of the following is not a common size for PVCu soil pipes?

• 65 mm

• 82 mm

• 110 mm

• 160 mm

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

• 10% of the depth of the joist

• 20% of the depth of the joist

• 25% of the depth of the joist

• 30% of the depth of the joist

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

• 1.8 m

• 2.4 m

• 2.7 m

• 3.0 m

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

• 0.5 m

• 0.9 m

• 1.2 m

• 2 m

Which colour identifies wholesome water when installing MDPE pipework?

• Yellow

• Orange

• Green

• Blue