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KY Plumbing Code > Section 5- DWV > Flashcards

Section 5- DWV Flashcards

1
Q

Underground waste pipe installed beneath a concrete slab shall not be less than

A

2in in diameter and extend no less than 12 inches above the concrete slab

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2
Q

Tubular brass, PVC, or ABS trap shall not be installed

A

below the finished floor serving a fixture

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3
Q

TRAP REQUIREMENTS
Fixtures shall be trapped by a water seal how?

A

seperately; as near as possible to the fixture; but not exceeding 10in from bottom of fixture to the dip of the seal

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4
Q

A fixture trap shall have a water seal not less/more than

A

less than 2in nor more than 4in

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5
Q

Waste from a bathtub shall or other fixture shall not discharge

A

into a water closet bend

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6
Q

Are double traps permitted

A

no

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7
Q

Traps shall be

A

self cleaning, true to its water seal, protected from frost and evaporation

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8
Q

Trap primers are required on

A

Floor drains only in mech rooms or boiler rooms AND all open receptacles that receive TP device discharge only

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9
Q

are crown vents permitted

A

no

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10
Q

fixture traps shall be protected from

A

siphonage and backpressure

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11
Q

air circulation shall be assured by

A

means of an individual vent

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12
Q

an open drain, like a hub drain or open receptacle, shall not be installed in

A

a plenum space

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13
Q

distance of trap and vent is measured

A

along centerline of waste or soil pipe from vertical inlet of trap to vent opening

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14
Q

fixture trap vent shall not be

A

below dip of trap except for water closet

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15
Q

fixture branch on a water closet shall not be more than

A

4ft 6in

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16
Q

Grease traps must be

A

as near to fixture as possible, approved by dept, and if business establishment, installed per municiple ordinance or State code from private sewage

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17
Q

Sand traps shall be

A

readily accessible and serve the purpose intended

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18
Q

Slip joints permitted?

A

are permitted on inlet side; single 1.5in with elastomeric gasket on the outlet side

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19
Q

PIPE CLEANOUT REQUIREMENTS
In a building served by stack over 45ft, a clean out shall be provided at

A

base of each vertical of soil stack

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20
Q

There must be at least 1 clean out in the building drain where

A

Full size inside branch in the wall or outside within 2 ft of foundation with a 2 directional fitting (combo tee wyes)

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21
Q

Outside cleanout shall be extended to…

A

finished grade

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22
Q

Cleanout size shall be

A

same nominal size as pipe it serves but not less than 4in for larger pipe

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23
Q

Distance between cleanouts in all sewers shall not exceed

A

150ft

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24
Q

What shall be considered as a cleanout and with what exception

A

A floor or wall connection of a fixture, except where house drain enters a building

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25
Q

GRADES AND SUPPORTS OF HORZ PIPING
Horizontal piping shall align at uniform grade not less than what and be supported how

A

Not less than 1/8 in per foot and according to manufacturer

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26
Q

Horizontal piping supports shall not exceed

A

10ft

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27
Q

A stack shall be supported

A

At base and at floor level

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28
Q

No hub pipe and fittings shall be supported at

A

Each joint of pipe and fittings

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29
Q

PVC shall be supported

A

Every four feet or less, at base of vertical stack, and at each trap branch as close to Trap as possiblr

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30
Q

PE pipe and fitting supported how

A

Continuously with v channel

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31
Q

CHANGE IN DIRECTION
Single and double sanitary tees

A

Maybe used in vertical stack (soil waste and vent)

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32
Q

May a sanitary tee be placed on back or side

A

Yes but not at an angle of more than 45 degrees

33
Q

Name the prohibited fittings

A
  1. double hub bend or tee or inverted hub on sewer, soil or waste
  2. drilling and tapping house sewer or house drain or DWV pipe
  3. Use of a saddle hub
  4. Pipe installed with hub or restriction that reduces area or capacity of pipe
  5. Traps that depend on a movable part or has a concealed interior partition for a seal
34
Q

Can dead end be used in a drainage system

A

no

35
Q

PROTECTION OF MATERIAL
Pipe passing under or through a wall shall be

A

protected from breakage

36
Q

Pipe passing through or under cinder, concrete, or other corrosive material shall be

A

protected from external corrosion

37
Q

DWV pipe shall not be installed or permitted outside unless

A

ADEQUATE pervision is made to protect it from frost

38
Q

In addition to being protected from frost, outside vent shall

A

be increased to full size as if it were passing through a roof

39
Q

SOIL AND VENT STACKS
Buildings with plumbing fixtures shall have soil and vent stack(s) with three things

A

extending full size through the roof, and be as direct as possible w/out sharp bends, and sized based on total fixture units
FULL SIZE, DIRECT, SIZED BY TFU

40
Q

HOUSE DRAIN
size of house drain shall be determined by

A

total number of fixture units

41
Q

Total area of vents through the roof shall be….

A

equal of that to house drain with a min number of one 3in stack

42
Q

If a 3 in house drain enters the building it shall be attached to

A

a three in stack

43
Q

One floor drain may be added to the house drain if

A

it conforms to Section 23 and without counting toward fixture units of the system

44
Q

A 3in closet bend shall have a _______ flange

A

4x3in

45
Q

CHANGING SOIL AND VENT PIPES IN EXISTING
DWV piping shall be replaced with the appropriate material and sizing if

A

The fixtures are to be changed/replaced and the dwv does not extend undimished through the roof or there is sheet metal soil or waste piping

46
Q

ROOF EXTENSIONS
A roof extension of soil and waste stacks shall run

A

full size at least 1ft above the roof

47
Q

If a roof is used for purposes other than weather protection, stack extension shall not be less than

A

5ft

48
Q

A stack of less than 3in shall be

A

increased to a minimum of 3 in before passing through the roof and the fitting placed at least 1ft below the roof

49
Q

TERMINALS
The terminus of a stack or vent shall extend how far above top edge of door, window, scuttle or air shaft and under what condition

A

2ft if within 10ft of top bottom face or side or edge of said door, etc

50
Q

MAIN VENTS TO CONNECT
All main vents or vent stacks shall connect and extend how

A
  1. connect full size at base of main soil or waste pipe at or below the lowest fixture branch
  2. extend undiminished in size through roof or be reconnected with main soil or vent stack at least 6in above rim of highest fixture
51
Q

If it becomes necessary to increase size of vertical vent stack….

A

the entire stack shall be increased from base except if the height of a stack which does not serve as the main vent is less than 45ft

52
Q

A vent or branch vent pipe shall be free from and graded how

A

drops or sags and drip back to soil or waste pipe by gravity

53
Q

If vent pipe connects to horizontal soil or waste pipe, vent branch shall be taken off above the center line of the pipe and the vent pipe shall rise vertically at an angle of _____to a point ______inches above the fixture is is venting before_____________

A

45; 6 ; offsetting horizontally or connection to branch, main, waste ,soil or vent

54
Q

A vent is not required on

A

backwater trap, subsoil catch basin trap, basement floor drain (if from flow line from center of the stack it is not closer than 5ft of the stack, nor farther than 20ft

55
Q

A basement floor drain does not require an individual vent

A

if it branches into the house drain so that from flow line from center of the house drain it is not further than 10ft from the house drain

56
Q

A common vent or common soil or waste pipe may be used if

A

2 WC, lavs, or fixtures of identical purpose are located on opposites side of a wall or partition or directly adjacent to each other within the distance by trap to vent minimums

57
Q

Double sanitary tee or cross shall not be used if

A

common vent or soil and waste pipe are connected through a double fixture fitting for a water closet of less than 1.6 GPF

58
Q

A manufacturer’s floor drain shall not require an individual vent if

A

within 10ft from main waste line or stack, if the the base of the stack is washed and stack(s) are undiminished through the roof or connected to a main vent stack

WITHIN 10FT f/ MAIN (waste) OR STACK, STACK IS WASHED/UNDIMINISHED (THR ROOF) OR CONNECTED TO MAIN VENT

59
Q

An open receptacle may be connected to a floor drain line without being vented if

A

the waste line discharges into a four in master trap before entering the sanitary sewer system

60
Q

INDIRECT WASTE CONNECTIONS
Waste pipe from a fridge drain or other receptacle where food is stocked or waste water from a cooled compressor shall

A

connect indirectly with house drain, soil or waste pipe

61
Q

Indirect waste drain from fridge or food storage shall be

A

vented to outside air; discharge into an open sink or other approved open receptacle that is properly supplied with water; and the connection must be located in accessible and ventilated area

VENTED OUTSIDE, DISCHARGES IN OPEN SINK or RECEPTACLE SUPPLIED WITH WATER, CONNECTED IN ACCESSIBLE AND VENTILATED AREA

62
Q

BAR AND SODA WASTE
bar and soda waste, sink, or receptacle shall have:
a _____ trap and branches
____in main
___ in fresh air pipe

A

1.5
2
1.5

63
Q

Main waste from a bar/soda fountain into a

A

properly vented and traped open receptacle inside or outside building

64
Q

OPEN RECEPTACLES
Soil or waste piping receiving discharge from an open receptacle shall be at least ____in. above ________ if it discharges into a septic system

A

6in above ground surface

65
Q

FRIDGE AND CONDENSATE
Fridge or condensate discharge waste pipe shall not be less than ____and each opening shall be _________ and equipped with sufficient ______

A

1 1/2 for 1 to 3 openings
2in for 4 to 8 openings
trapped
cleanouts

66
Q

OVERFLOW PIPES
Overflow pipes -waste from water supply tank or exhaust from a water lift shall not be ______ but shall discharge _________

A

-directly connected to a house drain, soil or waste pipe
-upon a roof or into a trapped open receptacle

67
Q

ACID AND CHEM WASTES
Corrosive liquid waste shall be _____ before entering the house sewer.

A

diluted through acceptable dilution or neutralizing pit

68
Q

LAB WASTE PIPING
must be sized according to ______ and ______ trapped

A

this regulation and individually trapped

69
Q

A continuous waste and vent pipe system may be used if the waste discharges into ____________ located________ with a vent _______. Vent may be eliminated if the pit has a ___________.

A

dilution pit
outside the building
equal to the size of the drain
a ventilated cover

70
Q

If dilution pit is not required and is not used, fixtures should be…

A

individually vented

71
Q

If construction conditions permit, the base of the stack of continuous waste and vent system shall _______________ and _______________

A

be washed by the last fixture opening
continue full size independently through the roof.

72
Q

A fixture branch exceeding trap to vent requirements from the main shall be______

A

revented (individually vented)

73
Q

Trap on sinks shall not be lower than _____ from bottom of sink.

A

12 in

74
Q

two chem sinks can be common vented if fixtures are not more than ____from center of each other

A

5ft

75
Q

A flat vent may be allowed if

A

design of the building prohibits the type of vents required

76
Q

A basement floor drain shall be

A

connected to house sewer, trapped and vented, readily accessible for clean, and of sufficient size

77
Q

If a drain is subject to backflow or back pressure, the drain shall be quipped with

A

a backwater valve

78
Q

A backwater valve shall be

A

made of noncorrosive material and constructed to ensure a positive mechanical seal, except if discharging waste

KY Plumbing Code (14 decks)

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