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SOC > Plumbing > Flashcards

Plumbing Flashcards

1
Q

Which pipe/line exhausts sewer gases and provides the air pressure to allow waste to flow freely?

A

The vent line

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2
Q

What is the proper fall in inches, for a waste line that is 48 feet in length?

A

12 inches

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3
Q

What is the ring called that goes between the toilet and the floor flange that prevents water from leaking?

A

The wax ring

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4
Q

What is one of the main disadvantages of cast iron when used as a waste line?

A

Heavy and difficult to fit

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5
Q

What is the name of the union used to join a copper pipe to a galvanized pipe to prevent damage to the pipe?

A

Dielectric union

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6
Q

What are the four types of faucets most commonly used in sinks today?

A

Disk
Ball
Compression
Cartridge

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7
Q

What is the major function of the drain/leach field of a septic tank system?

A

To send effluent or waste into the soil for filtering

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8
Q

When draining two water closets what is the size of the vent line?

A

3 inch pipe

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9
Q

Which sink drain line trap flows through the floor and out into the waste line under the house?

A

The S-trap

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10
Q

Which sink drain line trap flows through the wall and out into the waste line under the house?

A

The P-trap

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11
Q

What are the four basic group of pipes?

A

Cast-iron
Galvanized steel/iron
Copper
Plastic

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12
Q

Can you join cast-iron with PVC piping?

A

Yes

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13
Q

What is cast-iron pipes exclusively used for?

A

Drain system

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14
Q

What are the three schedule used for PVC?

A

Schedule 40, 60 and 80.

The higher the schedule the thicker the wall of the pipe.

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15
Q

What is the only use for PVC pipe?

A

Cold water line

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16
Q

What is the main advantage of plastic pipe?

A

Joining PVC pipes quick and simple but the cut must be reasonably straight

17
Q

What type of primer should be used on PVC and CPVC pipes before applying cement?

A

Purple primer

18
Q

What are the advantages and disadvantages of the CPVC pipes?

A

Withstand high temperature

Expensive

19
Q

What are the diameters used for CPVC pipes?

A

3/8’’, 1/2’’, 3/4’’ and 1’’

20
Q

What are the three components of a septic tank system?

A

Septic tank
Distro box
Leach field

21
Q

What are the advantages of using copper piping?

A

Resist corrosion
Smooth surface gives a good flow
Durable

22
Q

What are the three types of copper pipe?

A

M (red letter) most thin and least expensive
L (blue letter)
K used for underground water lines

23
Q

What are the two types of gas used for soldering?

A

Propane

App gas

24
Q

What are the advantages of PEX pipes?

A 
Easy to install and transport
Good insulation
Quiet
Good for retrofit jobs
Freeze resistant
25
Q

What are some of the codes relative to PEX piping?

A

Maximum horizontal support 32’’
Maximum vertical support 10’’
Withstand up to 210 F for 48H continuously

26
Q

What are the minimum dimensions to the left and right of the toilets?

A

15 inches

27
Q

What is the minimum distance from the center of the flinge to the back wall of the toilet?

A

12 inches

28
Q

What are the conditions for the DWV tree to operate properly and safely?

A

Each drain must be served by a vent
Several vents may be connected together
The vent line must be 6’’ above the highest flood line to be connected to an existing vent line

29
Q

What is the drop ratio for a drain line?

A

1/4’’ per foot

30
Q

What is the minimum diameter for a vent line?

A

1 1/4’’

Should never only be half of the diameter of the waste pipe it is serving

31
Q

What are the dimension of a vent line serving toilets?

A

2’’ for a single toilet

3’’ for two or more toilets

32
Q

What are the three types of venting system?

A

Wet
Auxiliary
Direct

33
Q

What is the stack vent?

A

It is where the vent pipes are exiting the roof?

34
Q

What is a trap?

A

A trap is a curved section of a drain pipe that fills up with water providing a seal

SOC (11 decks)

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