Plumbing Flashcards

1
Q

3 wall thickness grades for copper pipes

A

M, L and K

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2
Q

4 different pipe classifications

A

Cast iron, galvanized, copper and plastic

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3
Q

Different gases used for copper sweating

A

Propane and mapp gas

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4
Q

When joining a copper pipe with a galvanized pipe you must put what I between them

A

Dielectric Union

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5
Q

When using pex pipe a 90• directional change requires what

A

Guide fitting

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6
Q

Minimum diameter of a vent pipe is

A

1 1/4

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7
Q

If a waste pipe is 1 1/2” in diameter how big must the vent pipe be

A

Bigger than 3”

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8
Q

Toilet area dimensions

A

15” left and right 12” to the rear

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9
Q

What should be done to horizontal faced drain lines

A

They should drop 1/4” every foot

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10
Q

What determines the size of a septic tank

A

Not the number of occupants but the amount of bedrooms or waste/water gal a day

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11
Q

When venting 2 toilets what size must the vent pipe be

A

3”

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12
Q

For pvc drain systems what is the Y shaped fitting that is capped off called

A

Clean out

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