Algonquin Basic Plumbing Theory Test 3

Front 1

What is the name for a drain that receives water from the floor of a building?

Back 1

Floor Drain

Front 2

What must the cross sectional area of the strainer or gate on a floor drain be equal to?

Back 2

The cross-sectional area of the fixture outlet pipe is serves.

Front 3

All floor drains must be equipped with a:

Back 3

Trap Seal Primer

Front 4

Floor drains are always considered to be what kind of fixture?

Back 4

Sanitary fixture

Front 5

A floor drain does not require an additional vent when? (3)

Back 5

1) The fixture drain connects to a sanitary building drain

2) The size of the floor drain is 3" minimum

3) The minimum length of the fixture drain service the floor drain is 450mm

Front 6

Floor drains located below ground shall have an outlet with a trade size of not less than:

Back 6

2"

Front 7

On a floor drain, the cross-sectional area of the strainer or the grate must be equal to:

Back 7

The cross sectional area of the fixture outlet pipe it serves

Front 8

A floor drain shall be installed in a basement forming part of the unit where:

Back 8

Gravity drainage to a sanitary drainage system is possible

Front 9

The trap seal depth of a floor drain must be calculated by measuring the air velocity across the inlet of the fixture outlet pipe in inches to the water column (manometer) and adding how much to the seal to protect against back siphonage?

Back 9

1.5"

Front 10

Minimum trap seal depth is how much?

Back 10

38mm / 1.5"

Front 11

When a floor drain is installed in an area where vehicular traffic occurs, what 2 conditions must be met:

Back 11

1) Drain must be made of metal or concrete

2) Have a grate or perforated cover which can withstand the traffic

Front 12

Can a sediment interceptor acting as a floor drain be used as an oil interceptor?

Back 12

No

Front 13

A floor drain that is located below floor level and comes in contact with the earth is considered:

Back 13

Below Ground

Front 14

A floor drain that is located below a floor level and does not come in contact with the earth is considered:

Back 14

Suspended

Front 15

A trap serving a floor drain is required to have a supply of water flowing through it sufficient:

Back 15

To maintain the trap seal

Front 16

If a floor drain is located in an oil transformer room, a high voltage room, or any room where flammable, dangerous toxic chemicals are stored or handled, what should the floor drain NOT be connected to.

7.4.3.4

Back 16

The sanitary drainage system

Front 17

May a floor drain be located where food is stored in open containers?

7.4.2.1 (e)

Back 17

No

Front 18

One trap may serve a group of floor drains and hub drains, a group of shower drains, a group of washing machines, or a group of laboratory sinks if the fixtures: (2)

Back 18

1) Are in the same room

2) Are not located where they can receive food or other organic matter

Front 19

Where one trap receives the discharge of numerous fixture outlet pipes is knows as a:

Back 19

Gang trap

Front 20

Floor drains which, when located below ground, do not require an additional vent if the total fall of the fixture drain does not exceed the:

Back 20

Inside of the fixture drain

Front 21

The gang trap for a group of floor drains must be hand holed and installed with a:

Back 21

Cleanout

Front 22

A drain which does not serve as a floor drain but meets all the requirements of a floor drain is a:

Back 22

Hub drain

Front 23

Hub drains are usually used as the receiving fixture in an:

Back 23

Indirect waste system

Front 24

When a drain is intended to serve as a hub drain and not a floor drain, the flood level of the drain is recommended to be at least:

Back 24

38mm above surrounding floor lvl

Front 25

The minimum size of a hub drain is:

Back 25

2"

Front 26

The minimum size of a funnel floor drain is:

Back 26

2"

Front 27

Drains from coolers and walk-in freezers should be hooked up to a funnel floor drain indirectly through an air-break and the vertical distance should be a minimum of:

Back 27

1"

Front 28

A funnel floor drain must be (3)

Back 28

Trapped, vented, and primed

Front 29

If a beer cooler has an indirect waste of 2", the size of the hub drain should be how much:

Back 29

3" (One size larger)

Front 30

In most cases, water is delivered from a priming device to a floor drain by:

Back 30

Gravity

Front 31

Floor drains that are seldom used would lose trap seal due to: (5)

Back 31

1) Back siphonage

2) Oscillation

3) Evaporation

4) Capillary Action

5) Back pressure

Front 32

The minimum size for a primer tube is:

Back 32

3/8" ID

Front 33

A popular method of preventing back flow at primer connections is by provided:

Back 33

Air break

Front 34

A commercial type trap seal primer would be best connected to a horizontal:

Back 34

Cold water supply pipe

Front 35

Water used to prime a floor drain does not have to be potable but should not contain:

Back 35

Organic matter

Front 36

When using mechanical equipment to prime a floor drain, it must be determined that the equipment will be in operation:

Back 36

12 months a year

Front 37

An ideal method of priming a floor drain located in the basement of a single family dwelling is to use the:

Back 37

Laundry tub faucet

Front 38

A commercial trap seal primer delivers water to a floor drain though a valve that is operated by:

Back 38

Pressure differential

Front 39

When connecting a primer tube to a floor drain, a potential cross-connection occurs where the primer tube connects to the floor drain below the:

Back 39

Flood level rim

Front 40

A serious hazard of cross-connection is the possible contamination of the :

Back 40

Potable water supply system

Front 41

May the discharge from a drinking fountain be used to supply water to a floor drain?

Back 41

Yes

Front 42

Hub drains and funnel floor drains also require a:

Back 42

Trap seal primer connection

Front 43

If a series of primer tubes is being served through a header, all the priming tubes must be connected:

Back 43

At the same level for all floor drains to be primed equally

Front 44

The choice a plumber makes in selecting a vacuum breaker or a pressure vacuum breaker depends on:

Back 44

The time the device will be in use

Front 45

The minimum length of time of continuous operation is how much if a pressure vacuum breaker is selected for mechanical equipment cooling lines to prime traps:

Back 45

12 hrs and 12 months a year

Front 46

The length of a primer tube to the floor drain must be at least:

Back 46

8"

Front 47

Commercial trap seal primers must be installed in a:

Back 47

Horizontal section of the supply pipe

Front 48

When a floor drain is located a great distance from any equipment or fixture that could be used as a source of priming water, occasionally what would be used to prime the drain?

Back 48

A urinal tank

Front 49

A condition where the normal direction of the flow of waste in a drain is reversed, allowing the wastes to enter a building through the drainage system.

Back 49

Backflooding

Front 50

Backflooding is prevented by:

Back 50

Installing a backwater valve

Front 51

There are 4 types of building drainage systems:

Back 51

1) Separate

2) Combined

3) Semi-Combined

4) Sumps

Front 52

What are the characteristics of a separate drainage system?

Back 52

The storm and sanitary drains empty into separate sewers in the street.

Front 53

What are the characteristics of a semi-combined systems?

Back 53

The semi-combined system combines all the storm inlets together and deposits them to a sanitary municipal sewer downstream of the property line.

Front 54

In a semi-combined system, located as close as possible to the foundation wall, the storm building drain runs through a:

Back 54

Storm building trap

Front 55

What must be installed as close as possible to the storm building trap at the point of entry of the storm building drain?

Back 55

Backwater valve

Front 56

If a sump is not pumped automatically it must be sized to hold water accumulation for how long?

Back 56

24 hrs

Front 57

Must a sump pit be water and air tight?

Back 57

Yes

Front 58

A sump pit must be vented to:

Back 58

Open air

Front 59

A union, check valve, and shut off valve must configured in that sequence must be installed:

Back 59

In the direction of discharged

Front 60

A poorly designed drainage system can allow wastes to be discharged to locations where they may cause any number of serious problems. Name three:

Back 60

1) Health

2) Drainage into bldg

3) Contamination of waterways

4) Cost of sewage treatment

Front 61

A sanitary building drain may be degined as the horizontal drainage piping in or adjacent to a building or other structure that receives the discharge from the:

Back 61

Sanitary waste

Front 62

A separate sanitary drainage system receives the discharge from the:

Back 62

Sanitary system only

Front 63

A separate storm drain received the discharge from the:

Back 63

Storm drain only

Front 64

A combined public sewer accepts the discharge from the:

Back 64

Sanitary and storm systems

Front 65

Building traps are not used at all in:

Back 65

Separate drainage systems

Front 66

Semi-combined systems interconnect the storm and sanitary systems together where?

Back 66

The property line

Front 67

For backflow protection on combined systems what is installed?

Back 67

Backwater Valve

Front 68

For sewer gas odor protection from being emitted through the storm system, what is installed?

Back 68

A storm running p-trap.

Front 69

A sump pit and a sump pump are installed inside a building when the sump pump drain elevation is:

Back 69

Lower than the storm building drain

Front 70

What is a building trap?

Back 70

A running hand hole installed in a sanitary building drain

Front 71

What is the purpose of a building trap?

Back 71

To prevent the passage of gasses or vermin from public sewers into buildings.

Front 72

Where would a building trap be located?

Back 72

Inside the building as close as possible to the wall through or under which the building drain enters the building.

Front 73

Which body of governance dictates whether building traps are to be installed?

Back 73

Municipal

Front 74

What is the minimum size for a fresh air inlet?

Back 74

4"

Front 75

A building trap receives waste from the:

Back 75

Sewer drainage system

Front 76

The fresh air inlet, installed in conjunction with the building trap, permits air to enter the building drain and exit:

Back 76

The main stack

Front 77

The cleanout installed in the building drain downstream from the trap is a code requirement and allows cleaning of the:

Back 77

Building sewer

Front 78

Where a fresh air inlet terminates above ground, it should be protected from blockage by installing:

Back 78

Two 90 degree elbows down to protect against the elements and a bird screen installed to protect against vermin

Front 79

The fresh air inlet must connect upstream from the building trap no further than:

Back 79

1.2m

Front 80

A building trap is made the same way a running trap is made, with: (3)

Back 80

1) 4" p-trap

2) TY

3) Hand hole cleanout

Front 81

When required, a building trap is installed in the:

Back 81

Sanitary building drain only

Front 82

The terminology used to define a trap which is required on a storm drainage system at point of entry into a building is a:

Back 82

Storm trap

Front 83

Vent pipe must be ______ ______ ______ than the largest inlet pipe.

Back 83

One size smaller