Sanitary Appliances Pipework Systems Quiz

What is the maximum distance for a 32mm waste pipe from the appliance to the soil stack?

• 1.7m

• 3.0m

• 4.0m

• 6.0m

What is the maximum distance for a 100mm waste pipe from the appliance to the soil stack?

• 1.7m

• 3.0m

• 4.0m

• 6.0m

What is the recommended diameter for a waste pipe connected to a washing machine or dishwasher?

• 32mm

• 40mm

• 50mm

• 100mm

What is the pipe size range for a WC branch?

• 32 mm

• 40 mm

• 75–100 mm

• 50 mm

What is the maximum length for a wash basin and bidet pipe?

• 3 mm

• 1.7 mm

• 6 mm

• 4 mm

What is the gradient range for a washing machine/dishwasher pipe?

• 18–22 mm/m

• 18–90 mm/m

• 18 mm/m

• 22–90 mm/m

What is the trap seal depth for a bath?

• 50 mm

• 75 mm

• 100 mm

• 40 mm

What should be done if the pipe length exceeds the maximum for 40mm appliances?

• Use a 32mm pipe

• Increase to 50mm pipe

• Decrease the gradient

• Use a 75mm pipe

What are the most common domestic waste pipe sizes?

• 25mm, 35mm, 45mm

• 32mm, 40mm, 110mm

• 30mm, 50mm, 100mm

• 20mm, 40mm, 100mm

When is a 50mm waste pipe size used?

• When only one appliance is connected

• When more than one appliance is using the same waste pipe

• When the pipe is longer than 10 meters

• When the pipe is made of metal