Sanitation Systems QuizL3P2U9,1.10

What are the three methods of below ground drainage that can be used to discharge water from sanitary appliances?

• The separate system, The combined system, The integrated system

• The separate system, The partially separate system, The integrated system

• The separate system, The partially separate system, The combined system

• The combined system, The partially combined system, The integrated system

What is the main problem with the separate system of below ground drainage?

• Possibility of contaminating a water course with raw sewage if the wrong connections to the system are made.

• System planning can be troublesome.

• Foul water drains are not flushed through during heavy rainfall.

• It is extremely expensive to install.

What is another name for the partially separate system?

• The separate system

• The integrated system

• The partially combined system

• The combined system

What is one of the main problems with the combined system of below ground drainage?

• Foul water drains are not flushed through during heavy rainfall.

• System planning can be troublesome.

• It is extremely expensive to install.

• During periods of heavy rain, the drainage system can become flooded.

What is the purpose of a soakaway drain?

• To disperse rainwater run off from roof areas

• To discharge waste water from sanitary appliances

• To treat waste water before discharging it into the drainage system

• To store rainwater for later use

What is the design ratio for small soakaways serving 25m2 or less of roof area?

• 15mm rainfall in 20 minutes

• 10mm rainfall in 5 minutes

• 20mm rainfall in 15 minutes

• 5mm rainfall in 10 minutes

Where should soakaways not be sited?

• Within 2.5 m of a building

• Where the water table is high

• Near a drainage field

• All of the above

What should be referenced for soakaways greater than 25m2?

• BS EN 752 part 4

• Water Regulations

• Building Regulations

• Approved Document H

What is the main problem with the partially separate system of below ground drainage?

• Possibility of contaminating a water course with raw sewage if the wrong connections to the system are made.

• Foul water drains are not flushed through during heavy rainfall.

• System planning can be troublesome.

• It is extremely expensive to install.