Theory Drainage Code 2.4

Front 1

A floor drain is permitted to be connected to a storm water waste system, provided that it’s located where it can only receive ______________

Back 1

Clear water water waste or storm water

Front 2

Minimum length of horizontal offset in a soil or waste stack that receives more that 30FU or discharge from 2 or more stories?

Back 2

1.5m

Front 3

Where a vent pipe is connected into the suds pressure zone , no other vent pipe shall be connected to said vent pipe within _____

Back 3

The height of the suds pressure zone.

Front 4

No other fixture may connect to a lead bend or stub that serves a ______

Back 4

Water closet.

Front 5

An overflow from a rainwater tank shall not be directly connected to a ______

Back 5

Drainage system

Front 6

Equipment discharging waste with organic solids shall not be located _________ of a__________.

Back 6

Upstream

Grease interceptor

Front 7

What floor drains or fixtures are not permitted to be connected to the drainage system?

Back 7

Oil transformer vaults

High voltage rooms

Where flammable,dangers or toxic chemicals are stored

Front 8

To what temperature must waste be cooled to before it is discharged into the drainage system?

Back 8

170•F, 75•C

Front 9

Fixtures that discharge fats, oils and grease in a public kitchen must discharge through a ___________

Back 9

Grease interceptor

Front 10

An interceptor with an effective water seal of not less than ______ is permitted to serve as a trap.

Back 10

38mm

Front 11

When storm water is connected to a combined sewer, a _______ shall be installed between any opening in the system, unless the opening is the upper end of a leader that terminates _____________ and ___________.

Back 11

Trap

At a roof only used for weather protection

Not less than 1m above or 3.5m away from any air inlet, openable window or door.

Front 12

Where freezing could cause storm drainage to freeze a _______ with a _______ shall be installed in a heated location .

Back 12

Trap

Clean out

Front 13

Sewage sump tanks that don’t operate automatically must have the capacity to sufficiently hold for_______ of accumulation of liquid.

Back 13

24 hrs

Front 14

Maximum _______ change in direction on a horizontal drain between _______

Back 14

135•

Clean outs

Front 15

the discharge from a sewage sump pump shall be equipped with a _________, _________ and a ___________ installed in that sequence in the direction of discharge .

Back 15

Union

Check valve

Shut off

Front 16

Nominally Horizontal piping that is inside a building shall be braced to prevent __________ and _______ and to control the effects of _______

Back 16

Swaying and buckling

Thrust

Front 17

ABS or PVC plastic piping shall be supported every ____m or ___feet and at the end of _______ or _____ and at changes in direction or elevation.

Back 17

1.2m

4 feet

Branches or fixture drains

Front 18

Cast Iron Pipe shall be supported every _____ m or _____” and at or adjacent to each ____ or _____.

Back 18

3m

10feet

hub or Joint

Front 19

Where a fixture or device is ____________, the connections shall be made by terminating the fixture drain above the ________________ of a directly connected fixture to form an __________

Back 19

Indirectly connected

Flood level rim

Air Break

Front 20

Size of an air break?

Back 20

1 pipe diameter but not less than 1” or 25mm

Front 21

Nominally Horizontal piping underground shall be supported in a base that is ______ and ______ u see the whole pipe.

Back 21

Firm and continuous

Front 22

Under ground pipes shall be back filled and tamped to a height of __________over the top of the pipe.

Back 22

300mm or 12”

Front 23

What

Back 23

Risk of damage to the building

Condensation

Front 24

Except for acid traps , every trap shall have a seal depth of not less than _____mm or ________.

Back 24

38mm

11/2”

Front 25

What are the two provisions that must be met to allow one trap to serve a group of floor or shower drains , a group of washing machines or a group of laboratory sinks?

Back 25

1. Same room

2. Cannot receive food or organic waste.

Front 26

ABS or PVC plastic piping shall be supported every ____m or ___feet and at the end of _______ or _____ and at changes in direction or elevation.

Back 26

1.5m

4 feet

Branches or fixture drains

Front 27

Keep

Back 27

Going

Front 28

Steel pipe 6 inches in diameter or greater shall be supported every ____

Back 28

3.75 m

Front 29

All steel pipe with a diameter 5” or less shall be supported every ______feet or _____m

Back 29

2.5 m

8ft

Front 30

Nominally Horizontal piping underground shall be supported in a base that is ______ and ______ throughout the whole pipe.

Back 30

Firm and continuous

Front 31

Rods supporting hangers for pipe over 4” in size must be ______ in diameter

Back 31

13mm or 1/2”

Front 32

piping used as an internal leader which may be subject to condensation shall be installed in a manner that limits the _____________ due to ________.

Back 32

Risk of damage to the building

Condensation

Front 33

Vertical piping must be supported at its ______ and at the floor level of _______ by rests ( riser clamps ) each which can bear the weight of the ______ that is between bit and the rest above it.

Back 33

Base

Alternate stories

Pipe

Front 34

The maximum spacing of vertical supports shall be ______

Back 34

7.5 m