Why can baths and showers have a shallower seal depth compared to other appliances?

They are larger and flat bottomed

They discharge water more quickly

Which appliances can discharge into a gully trap or a hopper head?

Sinks, showers, basins, and baths

Washing machines and dishwashers

Rainwater gutters and downspouts

When is a 'P' trap commonly installed?

When the discharge branch is horizontal to the appliance

When the discharge branch is vertical to the appliance

When multiple appliances are served by one discharge branch

When the initial waste pipe is vertical

Under what circumstance is an 'S' trap commonly installed?

When the initial waste pipe that leads to the discharge branch is vertical

When the discharge branch is horizontal to the appliance

When the appliance is located outdoors

When there is only one appliance connected to the discharge branch

What is the purpose of a running trap in plumbing?

To save space and money by only requiring one trap

To allow multiple traps to be installed in the discharge branch

To increase the distance between the appliance and the trap

To make the installation process more complex

Which type of trap is designed for use under a wash-hand basin and allows the waste to be hidden behind the pedestal?

Slimline, pedestal or straight through trap

What is the use of a washing machine trap?

To be used for a washing machine or dishwasher with a pumped discharge

To regulate the water temperature in a washing machine or dishwasher

To prevent sewer gases from entering the building

To filter out debris from the washing machine water

Where is the discharge hose of a washing machine trap located?

Over the top of the trap within a supporting clip

Why are bottle traps not suitable as a sink trap?

They are restrictive to the flow of water.

They are not visually appealing.

On what principle does a shower trap operate?

A similar principle to the bottle trap

A similar principle to the U-bend trap

A similar principle to the S-trap

A unique principle not related to other traps

Does the shower trap include a feature for cleaning?

Yes, it includes access for cleaning via a removable waste grill

Yes, it includes a non-removable waste grill

No, it is self-cleaning and requires no maintenance

What is the purpose of anti-vac or resealing valves in plumbing systems?

To prevent trap seal loss due to siphonage

To increase water pressure in the pipes

To filter impurities from the water

When can a standard trap be used without the problem of trap seal loss?

When the system has been designed and installed correctly

When the system is old and needs upgrading

When the system has been designed and installed incorrectly

When additional appliances are added to the system

Why are anti-vac traps not recommended for new installations?

They may not hold during an air test

They cause blockages in the waste pipe

They increase the risk of water leaks

What function does the small air admittance valve in anti-vac traps serve?

It allows a small amount of air into the waste pipe under negative pressure

It regulates the flow of water through the trap

What is a self-sealing waterless valve used for in plumbing?

To create an air tight seal to stop noxious smell entering the property

To filter impurities from water

Why is a self-sealing waterless valve not considered a trap?

Because it does not use a seal of water

Because it uses a seal of water

Because it filters impurities from water

Because it regulates the water pressure

Where must the waste pipe discharge in relation to the grating and water line in the gully?

Below the grating and above the water line

Above the grating and below the water line

Below both the grating and the water line

Above both the grating and the water line

What is the purpose of ensuring that the waste pipe discharges below the grating but above the water line in the gully?

To ensure that an air break is maintained and no smells can enter the building

To prevent water from flowing back into the building

To increase the water pressure in the drainage system

To allow for easier cleaning of the waste pipe

What is the minimum distance from the permitted opposing connection in the soil stack to the branch connection?

2.5 times the diameter of the pipe

Where is the access manhole located in relation to the WC connector?

externally but close to the building

Below the underground foul water drain

Why is regular use important for the maintenance of the trap seal?

It helps in topping up the seal water

It prevents the accumulation of debris

It ensures the trap remains clean

What causes the water levels in the appliance traps to bob up and down, leading to trap seal loss?

Wind passing over the top of a soil stack

What can assist with the problem of trap seal loss due to wind?

Decreasing the size of the soil stack

PP10 sanitation Plumbing Traps

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Practice Problem

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Hard

jon May

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50 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of a trap under an appliance in plumbing?

To regulate the water flow

To stop the noxious smell from the soil stack entering the property

To measure water usage

To filter out debris

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where is the trap attached in a plumbing system?

To the top of the waste fitting on the appliance

To the underside of the waste fitting on the appliance

Outside the property

At the main water supply

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the majority of traps made from?

PVC

Polypropylene

Iron

Rubber

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following materials is NOT mentioned as a common material for traps?

Brass

Copper

Chrome plated

Steel

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a common jointing method used in traps?

Soldering

Welding

Compression using a rubber seal

Gluing

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the trap seal depth in plumbing?

To measure the amount of water used in a property

To retain water to prevent noxious smells from entering the property

To control the flow of water through the pipes

To indicate the level of water contamination

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the waste fitting size for a bidet

32mm

40mm

100mm

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PP10 sanitation Plumbing Traps

50 questions

What is the purpose of a trap under an appliance in plumbing?

Where is the trap attached in a plumbing system?

What are the majority of traps made from?

Which of the following materials is NOT mentioned as a common material for traps?

What is a common jointing method used in traps?

What is the purpose of the trap seal depth in plumbing?

What is the waste fitting size for a bidet

What is the trap diameter required for a shower installation?

what is the seal depth for soil stack for a washing machine?

What is the seal depth for soil stack for a WC pan?

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