phase 2 1.9 Sanitary Systems Quiz

What can cause trap seal loss in sanitary systems, leading to unpleasant odours entering the property?

• The wastepipe is too long

• The waste pipe has been laid to the wrong gradient

• The waste pipe is too wide

• Incorrect bends installed at the foot of a soil stack

Which of the following is NOT a reason for trap seal loss in sanitary systems?

• The waste pipe is too small

• Too many appliances on a single waste pipe

• The waste pipe is too long

• The waste pipe is made of the wrong material

How can incorrect installation affect the functionality of a waste pipe in sanitary systems?

• Incorrect bends installed at the foot of a soil stack

• The waste pipe is painted

• The waste pipe is externally insulated

• The waste pipe is used infrequently

What causes the phenomenon of self siphonage in plumbing systems?

• The water pipe is too short.

• The water pipe is too narrow.

• The waste pipe is too long or the waste pipe fall is too great.

• The water pressure is too low.

What happens when the plug of water travels down the wastepipe?

• It creates a high-pressure zone.

• It decreases the speed of water flow.

• It creates a partial vacuum behind it.

• It increases the water temperature.

What is the result of the vacuum created by the traveling plug of water in a wastepipe?

• It pushes water back into the appliance.

• It pulls on the water left in the trap.

• It seals the pipe completely.

• It stops the flow of water.

What is induced siphonage in plumbing?

• The process where water pressure builds up in a pipe causing a burst.

• The process where water flowing from one appliance pulls the water from the trap of another appliance.

• The process where water is heated in a pipe causing evaporation.

• The process where water freezes in the pipe causing blockage.

Where does induced siphonage commonly occur?

• In isolated outdoor pipes.

• In high-pressure steam lines.

• Where a bath and a washbasin are connected to the same waste pipe.

• In electrical conduit systems.

What occurs at the bend at the base of the stack in a soil and vent pipe system when water is flushed from a WC?

• The water accelerates and exits the system quickly.

• The water momentarily stops, causing a shockwave of back pressured air.

• The water leaks out from the bend.

• The water temperature increases due to compression.

In extreme cases, what can the shockwave of back pressured air in the soil and vent pipe system cause?

• It can cause the pipes to burst.

• It can increase the water flow efficiency.

• It can blow out the trap from the nearest appliance.

• It can freeze the water in the pipes.