Plumbing 1St 2Nd And 3Rd Review

Front 1

What is the min height that a vent can terminate above a door or window?

Back 1

1 meter

Front 2

What is the max # of circuit vented branch traps that can be installed between a circuit vent and a relief vent?

Back 2

8 traps

Front 3

Scd 10 is the lightest scd pipe used when victolic grooving

True or false?

Back 3

true

Front 4

The max # of FU that can drain into a vent stack @ the lowest storey is?

Back 4

8 FU

Front 5

A roof that is 900 square meters and smaller needs how many roof drains?

Back 5

2

Front 6

What is the purpose of a parabolic weir on a storm drainage system?

Back 6

Slow down volume of water going through the roof drain

Front 7

Minimum size of water service pipe for a single family dwelling?

Back 7

3/4"

Front 8

Expansion joints for RWL's must be installed ___________ from the hopper?

Back 8

5 ft

Front 9

What is the minimum and maximum water pressure @ the point of entry into a building?

Back 9

Min = 29 psi or 200 kpa

Max =80 psi or 550

Front 10

Max temp of water discharge from a sterilizer without a requirement for cooling is?

Back 10

170 F

Front 11

The max allowable temp of water to be delivered from a mixing valve is ________.

Back 11

- 120 F or 49 C

Front 12

A temp sensing valve will deliver water @ a max temp of ________?

Back 12

120f or 49C

Front 13

What is the minimum amount of elbows required to make an expansion joint on a RWL?

Back 13

2

Front 14

Flow control drains may be installed provided:

1.) The max drain down time doesnt exceed __________?

2.) They are located not more then ______ from the edge of the roof and not more then ______ from adjacent drains?

Back 14

1.) 24 hours

2.) 15m and 30m

Front 15

Distance between cleanouts on a 3 or 4" line from two way rodding is?

Back 15

30m

Front 16

What is the max vertical drop for a WC trap arm?

Back 16

1M

Front 17

When testing a water system with air what pressure must be maintained and for how long?

Back 17

100 psi for 2 hours

Front 18

When a water test is required for underground DWV how much ft of head must it be subjected to?

Back 18

10 ft of head

Front 19

According to environment canada, how is a RWL sized?

Back 19

Max amount of rainfall recorded over a 25 year period during a 15min period

Front 20

When is a vent stack required?

Back 20

When a soil or waste stack discharged through 5 stories or more

Front 21

Can you drain into a Yoke vent?

Back 21

Yes, must be vertical section of the Yoke vent. Max 2 fixtures connected symmetrically and each fixture doesnt exceed 1.5 FU

Front 22

Where must a vent stack connect to the soil/waste stack it's serving? What is the minimum size of vent stack?

Back 22

Must connect to a vertical section of the soil/waste stack at or immediately below the lowest pipe connect to the stack

Front 23

A yoke vent need not be installed provided the the soil/waste stack is interconnected with the vent stack in each storey of the section in which fixtures are located by means of a vent pipe equal in size to the branch or fixture drain or 2", whichever is smaller

Back 23

2.5.4.3(4)

Front 24

When is a Yoke vent required?

Back 24

When a soil/waste stack goes through 12 stories or more.It's installed every 5 floors starting from the top down.

Front 25

How do you size a yoke vent?

Back 25

One pipe size smaller then the smallest pipe it is connect to

Front 26

When a soil/waste stack offsets, it requires a offset relief vent when?

Back 26

-Nominally horizontal offset more then 1.5 M

-Passes through more then 2 storeys

-Hydraulic load more then100 FU

Front 27

A vent stack is required when fixtures discharge from a min of how many stories?

Back 27

5

Front 28

The size of a vent for a sewage pump is?

Back 28

One size small then the largest inlet. atleast 2" but no more then 4"

Front 29

How many FU's can drain into a additional relief vent and a circuit vent?

Back 29

Max 2 fixtures connected symmetrically not bigger then 1.5 FU each

Front 30

When should you install a re-circ line?

Back 30

Higher then 4 stories or hot line is longer then 30M

Front 31

Can fixtures with fixture outlet pipes less then 2" connect to the drain portion of a circuit vent?

Back 31

Yes, but they must be separately vented or separately circuit vented

Front 32

What size of flashing is used for a vent on a roof?

Back 32

20"x20"

Front 33

Where must a vent terminate through a roof?

Back 33

-Through a residential roof 150mm
- 3.5M away from a air intake and 1M above
-3.5M from another building

Front 34

What is the smallest vent pipe that can penetrate through a roof?

Back 34

3"

Front 35

1 PSI = how many kpa?

Back 35

6.9kpa

Front 36

What application is a turbine meter best suited for?

Back 36

Industrial water pumps and equipment

Front 37

How many check valves does a RP have?

Back 37

2

Front 38

The atmospheric vacuum breaker shall not be installed where it is under continuous flow for more then ?

Back 38

12 hours

Front 39

An atmospheric vacuum breaker shall be used on ?

(severity)

Back 39

non lethal and non toxic

Front 40

A pressure vacuum breaker device shall never be installed lower then_____ above the flood level rim?

Back 40

12"

normally used in a supply line to a fixture

Check this answer

Front 41

How many shower heads can a single drain handle on a gang shower?

What is the floor graded at?

Back 41

Max 6 shower head graded at 1/4" per ft

Front 42

Legionella thrives in what temperature?

Back 42

120F or 49C and lower

Front 43

Why would you install multiple pressure reducing valves in series?

Back 43

To allow for pressure reduction greater then that provided by a single valve

not 100% on this answer

Front 44

Why would you install multiple pressure reducing valves parallel from each other?

Back 44

To allow the use of 2 smaller, less expensive valves rather then one large expensive valve

Front 45

Max temp of sewage or clear water waste drained into a drainage system?

Back 45

75 C or 170F

Front 46

How many check valves does a pressure vacuum breaker have?

Back 46

1

Front 47

What is the distance required above a double check valve assembly when using a sight tubes for testing?

Back 47

3 ft

Front 48

A wet vent extends through more then 1 storey, the total discharge from any 1 storey above the 1st doesnt exceed?

Back 48

4

Front 49

What is the min height that a vent could terminate above a balcony?(public use)

Back 49

2m(6ft6")

Front 50

What temp should you set your HWT to?

Back 50

140F 60C

Front 51

What type of backwater valve must be installed on a building drain?

Norm open or closed?

Back 51

Norm open so there can be free flow of air through the system.

Front 52

Barrier Free Notes

1.5m radius

470 + or - 10 wall to center of WC

430 + or - 30 floor to seat

Front 53

What feature on a optimal level allows it to be used for measuring distances?

Back 53

Stadia lines

Front 54

What is the spacing distance for shock absorbers on a battery of fixtures?

Back 54

20 ft

Front 55

What is the min distance a water meter must be from any wall or entrance?

Back 55

12"

Front 56

What temp is water cooled for a drinking fountain

Back 56

10C

Front 57

Weeping tile must rest on what size of rock and by what dimension?

Back 57

1" rock

12"x12"

Front 58

A floor drain can be connected to a storm drain

true or false?

Back 58

true

Front 59

A floor drain 3" or bigger must be a min of 18" away from the BD or branch.

True or false

Back 59

true

Front 60

One trap may serve a group or floor drains, shower drains, a group of washing machines or a group of lab sinks if the fixtures are in the same room and arent located where they can receive food or other organic matter

Front 61

What is the purpose of the shield on the bubbler on a drinking fountain?

Back 61

Prevents contamination of the nozzle

Front 62

Whats the max amount of FU's that can drain into a relief vent?

Back 62

6FU

Front 63

Thermostat anticipator

-The anticipator is wired in series with the thermostat contacts. If the heat anticipator burns out due to a incorrect voltage being applied the circuit is broken

Front 64

Can victaulic be used on copper systems?

Back 64

Yes

Front 65

Max distance a cleanout can be from the base of a soil/waste stack?

Back 65

10 ft

Front 66

A double sanitary tee fitting shall not be used to connect the trap arms of?

Back 66

Back outlet WC's

Front 67

Max directional change for a kitchen sink before a vent has to be installed?

Back 67

90 degrees

Front 68

What is the min. cleanout size for a 8" building sewer?

Back 68

Manhole

Front 69

How many toilets can be wet vented?

Back 69

2

Front 70

Minimum size of trap for a bidet?

Back 70

1 1/4"

Front 71

Mapp gas uses what 2 types of gas?

Back 71

Acetylene and propane

Front 72

Where would you install a cast iron base meter?

Back 72

Where freezing might occur.

Front 73

Most common type of booster pump?

Back 73

Centrifugal pump

Front 74

All meters need to be grounded.

true or false?

Back 74

true

Front 75

State 2 advantages of a electric HWT

Back 75

Quiet

More choice of location(no flue)

Front 76

What type of backflow preventer is installed on a flush valve?

Back 76

Vacuum breaker

Front 77

Which family does the fill valve belong to?

Back 77

Needle

Front 78

What is the min. trap seal depth?

Back 78

1 1/2"

Front 79

Floor drains cant be installed in high voltage rooms or anywhere toxic or flammable material is stored.

true or false?

Back 79

true

Front 80

What is the min. size of a floor drain?

Back 80

2"

Front 81

Min. trap arm length must be how long?

Back 81

2x pipe diameter

Front 82

A sump pump need 3 fittings in what order?

Back 82

Union

check valve

ball or gate valve

remember "U check valve"

union closest to pump

Front 83

When fixtures are below grade what must you install to the drainage?

Back 83

Norm closed backwater valve

Front 84

The pressure vacuum device will or will not be used where it is subject to back pressure?

Back 84

will not

Front 85

Gang showerheads must be no closer then?

Back 85

30"

Front 86

When a offset in a soil/waste stack is great then 1.5 meters, how is it sized?

Back 86

as a branch or building drain

Front 87

What side of a pressure reducing valve would you install a pressure RELIEF valve?

downstream or upstream?

Back 87

downstream

Front 88

Is a check valve necessary on a booster pump system?

Back 88

yes

Front 89

A downspout from a ease trough connected to sub soil drainage need a cleanout where?

Back 89

12" above grade

Front 90

What are the 2 methods of expansion on a RWL?

Back 90

1.) Expansion joint no more then 5ft from the roof drain(installed on vertical)

2.) 2 90 degree elbows, first one 5ft MAX from roof, 2nd MIN 5 ft on horizontal

Front 91

Does a RWL need a trap if it's draining into a storm system?

Back 91

no

Front 92

What is the minimum clearance a cleanout needs for service?

Back 92

12"

Front 93

You can run drains and waterlines inside exterior walls.

true or false?

Back 93

false, only vent lines