Plumbing level 2 - PP1.1 - Drainage

Which part of the Building Regulations covers drainage and waste disposal?

• Part F

• Part H

• Part N

• Part G

What is the minimum depth of water seal in a trap?

• 50mm

• 100mm

• 75mm

• 25mm

What is the maximum gradient for discharge branches to maintain self-cleaning velocity?

• 2 degrees

• 2.5 degrees

• 5 degrees

• 7 degrees

What is the nominal diameter of the discharge pipe for a washing machine?

• 50mm

• 75mm

• 40mm

• 32mm

What is the maximum length for a 32mm waste pipe?

• 1.7m

• 3.0m

• 4.0m

• 6.0m

What type of pipe is used to prevent trap seal loss due to pressure fluctuations?

• Waste pipe

• Soil pipe

• Discharge pipe

• Vent pipe

What is the minimum diameter for a discharge pipe if multiple appliances are connected?

• 32mm

• 75mm

• 50mm

• 40mm

What should be installed at the base of a soil stack to maintain effluent velocity?

• Elbow joint

• Short radius bend

• Long radius bend

• Straight pipe

What is the purpose of an intumescent collar in an internal soil stack?

• To support the stack

• To allow air admittance

• To prevent water leakage

• To restrict flames and smoke

What is a waste manifold used for?

• To provide additional ventilation

• To increase pipe diameter

• To prevent crossflow

• To connect a single appliance