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Plumbing Code Training > Chapter 7: Sanitary Drainage > Flashcards

Chapter 7: Sanitary Drainage Flashcards

1
Q

The maximum fixture unit loading allowed on a 2-inch waste stack is ________.

A

Sixteen fixture units

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2
Q

Three-inch horizontal drainage piping shall have a grade or slope of not less than ________.

A

1/4 inch per foot

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3
Q

The maximum trap loading for a 3-inch trap is ___________.

A

Six units

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4
Q

The minimum sizes of verticalk and horizontal drainage shall be determined from the __________.

A

Total fixture units

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5
Q

The minimum size trap and trap arm for a bathtub is ___________.

A

1-1/2 inches

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6
Q

The maximum discharge capacity (for intermittent flow only), in gallons per minute, for one fixture unit is equal to ______.

A

7-1/2 gallons per minute

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7
Q

The minimum size drain line for a wall-hung urinal is _______ inches.

A

2 inches

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8
Q

The acceptable fitting for connecting a horizontal drain line with another horizontal drain line is a ___________.

A

Combination wye and 1/8 bend

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9
Q

The clearance required in front of a 2-inch clean out shall not be less than_________.

A

12 inches

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10
Q

The discharge line from an ejector shall be provided with a _____________.

A

Backwater or swing check valve, and gate valve

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11
Q

The minimum size discharge pipe from an ejector of pump in a single dwelling unit having a water closet connected thereto is ___________________.

A

2 inches

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12
Q

A horizontal drain pipe has an existing load of 30 fixture units, after connecting the discharge pipe from an ejector rated at 60 gallons per minute, the total load on the horizontal drain pipe will be ___________.

A

150 fixture units

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13
Q

Because of structural conditions, a 4-inch building drain is installed with a slope of 1/8 inch per foot. The installation will result in ______________.

A

A reduction in fixture unit load allowance

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14
Q

_______________ are considered suds-producing fixtures.

A

Kitchen sinks, bathtubs, and washing machine standpipes

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15
Q

Drainage connections shall not be made into a drainage piping system within __________ of any vertical to horizontal change of direction of a stack containing suds-producing fixtures.

A

8 feet

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16
Q

Vertical drainage lines connecting with horizontal drainage lines shall enter through a ___________.

A

45 degree wye or combination wye and 1/8 bend

17
Q

The minimum size of any building sewer shall be determine on the basis of the ___________.

A

Total number of fixture units

18
Q

A straight run of building sewer will require clean outs at intervals not to exceed ___________.

A

100 feet

19
Q

Building sewers 8 inches or larger may have a slope of not less than _____________.

A

1/16 inch per foot

20
Q

The maximum distance between manholes shall not exceed ___________.

A

300 feet

21
Q

In residential applications, ABS and PVC DWV piping installations shall be limited to structures of ___________.

A

Two stories in height

22
Q

In commercial applications, ABS and PVC DWV piping installations are limited to structures of __________________.

A

Unlimited height

23
Q

Fittings on screwed pipe shall be of the ____________.

A

Recessed-drainage type

24
Q

Except for plastic pipe, in lieu of water test, drainage piping may be tested with __________.

A

Air

25
Q

An approved material for closet screws or bolts is _________.

A

Brass

26
Q

Threads in drainage fittings shall be tapped to allow for __________.

A

Grade

27
Q

Joints between steel pipe and cast-iron pipe shall be ___________.

A

Caulked or threaded

28
Q

The maximum number of fixture units allowed on a 4-inch building sewer with a slope of 1/8 inch per foot, as compared to a 4-inch building sewer with a slope of 1/4 inch per foot is ____________.

A

Less

29
Q

Macerating toilet systems shall be restricted to single bathrooms for _________.

A

No restrictions

30
Q

Umps for macerating toilets shall be ___________.

A

Watertight and gastight

31
Q

The drainage fixture unit value assigned to a bathtub or combination bath/shower is _______.

A

2.0 fixture units

32
Q

With few exceptions, all horizontal drainage piping shall be provided with a cleanout at ___________.

A

Its upper terminal

33
Q

Every abandoned building sewer shall be plugged or capped ____________.

A

Within 5 feet of the property line

34
Q

Sewer Nd water piping may be installed in the same trench (with proper clearances) if the sewer piping is ____________.

A

Cast iron, PVC, or extremely strength vitrified clay

35
Q

Cleanout shall be designed to be _______.

A

Gastight and watertight

36
Q

The addition of leak-seeking additives to joint packing shall be ______________.

A

Prohibited

37
Q

A domestic dishwasher, with independent drain, has a drainage fixture unit value of _______.

A

4 drainage fixture units

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