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HI Module 4 > Plumbing > Flashcards

Plumbing Flashcards

1
Q

Is a volumetric flow test required via NY SOP?

A

No

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2
Q

What is the typical water supply line in a home?

A

3/4

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3
Q

What are the typical interior distribution lines size?

A

1/2

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4
Q

True or false: The homeowner is responsible for the main supply line to the curb stop shut off?

A

True

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5
Q

True or false it is not advisable to operate the main shut off? Why

A

True, they are rarely operated

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6
Q

What is the main shut off valve called?

A

Gate valve

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7
Q

What is the size of the pipe going to the meter, coming from the meter, and the supplies of the home?

A

1 inch, 3/4, half-inch

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8
Q

Water lines before 1950 may have lead?

A

True

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9
Q

What is PVC used generally for

A

Cold water lines and drain’s

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10
Q

What rating is CPVC And what is it used for?

A

180° use for hot water supply

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11
Q

Where should the main shut off be located?

A

Right after the meter

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12
Q

Explain the flow test?

A

Starts farthest from the incoming supply, Tub, shower, sink run simultaneously, Then flush the toilet, look and listen for reduction

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13
Q

What is the life expectancy of galvanized pipe?

A

40 to 60 years

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14
Q

What color is CPVC and PVC?

A

CPVC is cream, pvc is white (not rated for hot water use)

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15
Q

How do you join copper, PVC, pex?

A

Copper is soldering, PVC is solvent weld it, pex is crimped

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16
Q

What time frame was lead pipe used?

A

1920s and 1930s

17
Q

What are the federal regulations For lead paint

A

If it is more than 6 ft.² of painted interior surface, if any windows are replaced or 20 ft.² of exterior service was disturbed contractor must follow your lead safe working procedures.

18
Q

How do you identify lead pipes?

A

Easily scratched, brown stains in water

19
Q

What happens if you use water pipes as a ground?

A

The ground wire will accelerate the corrosion

20
Q

How’s public drinking water treated?

A

Dirt, and particles are removed via coagulation, heavy particles are settled out of the water, remaining water is chlorinated.

21
Q

How much lead is u safe?

A

10 micrograms of lead per deciliter

22
Q

CPVC has the least resistance to freezing, true or false

A

True

23
Q

Can a galvanized pipe shrink in size?

A

Yes from deposits

24
Q

Define water hammer?

A

Sudden surge of pressure from shutting off a faucet

25
Q

Define cross connection?

A

Connection between portable water (faucet) and possible source of contamination (liquid fertilizer attached to hose).

26
Q

Where should exterior faucets be?

A

Front and rear or 10’ within front or rear portion of corners of home.

27
Q

Name hot water tank fuels?

A

Oil, electric, propane, natural gas

28
Q

What happens if h2o tank gets to hot?

A

Temp pressure relief/watts valve will relief pressure

29
Q

Typical temp at faucet for hot water?

A

Not more than 120

30
Q

Hot water tank pressure relief line must be how far from the floor?

A

4-6”

31
Q

If hot water heater in garage it must be?

A

18” above floor, protected by bollards,

32
Q

What type of wells are aloud today?

A

Rotary or hammer drilled wells

33
Q

Can home inspector remove well cap?

A

Ni, only home owner or certified well driller

34
Q

True or false: main plumbing vent should go thru the roof?

A

True

35
Q

Where should be the plumbing vent located?

A

12’ away from opening, 3’ above

36
Q

S traps are often not aloud in new construction, true or false?

A

True

37
Q

Most public systems use gravity for waste water? True or false

A

True

38
Q

All drains less then three inches must have a slope of?

A

1/4 per foot

HI Module 4 (6 decks)

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