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Plumbing Theory 1 > Pipe Supports And Hangers > Flashcards

Pipe Supports And Hangers Flashcards

1
Q

What is the purpose of a hanger.

A

To keep pipe In alignment and to carry the weight of the pipe and contents.

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2
Q

What must a hanger allow for?

A

Allow pipe to expand and contract separately from the building or soil.

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3
Q

Copper pipe must be protected from ____ ______

A

Steel hangers, electrolysis

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4
Q

How do you protect copper pipes from steel hangers and electrolysis?

A
  1. Copper plated steel hangers
  2. Plastic
  3. Rubber
  4. Any other suitable material designed to prevent the transmission of electrical current
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5
Q

Vertical piping shall be supported and anchored no further apart than _______

A

Every other floor or every 7.5m (24-7”) whichever is less

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6
Q

What is a riser clamp?

A

A device that sits on the floor and allow pipes to pass through them.

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7
Q

Name 3 supports for vertical piping

A
  1. Riser clamps
  2. U bolts
  3. Uni strut and clamps
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8
Q

Horizontal supports or hangers shall never be more than _____ apart inside a building

A

2.5 m(8’-2”)

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9
Q

How should lead pipe be supported?

A

Throughout its entire length

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10
Q

Cast iron soil pipe shall be supported at or adjacent to each hub or joint not exceeding ______

A

3m(9’-10”)

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11
Q

Plastic DWV shall be supported at intervals not exceeding

A

1.2m(3’-11”)

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12
Q

Plastic water pipe shall be supported at intervals not exceeding

A

1m

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13
Q

Hard tempered copper piping shall be supported in intervals not exceeding

A

3m (9’-10”) for larger than 1” pipe

2.5 m (8’-2”) for under 1” pipe

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14
Q

Soft copper must be supported at a maximum of

A

2.5m (8’-2”)

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15
Q

Galvanized or steel pipe 6” or larger shall be supported at intervals not exceeding

A

3.75 m (12’-4”)

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16
Q

Galvanized or iron pipe under 6” shall be supported at intervals not exceeding

A

2.5 m (8’-2”)

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17
Q

All underground piping must be laid

A

On a firm base for its entire length

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18
Q

Backfill shall be free of

A

Stones, boulders, cinders, and frozen earth.

19
Q

All piping must be protected from ____

A

Frost

20
Q

Metal piping passing through corrosive materials like cinders or foundry sand shall be coated with ______

A

Bituminous material

21
Q

4 guidelines for selecting a hanger

A
  1. The size, material and weight of the pipe when full
  2. The position which the pipe is to be installed
  3. The type of building construction
  4. Pipe coverings and thickness of insulation
22
Q

What type of ya get has perforated holes?

A

Strap hanger

23
Q

What is the largest pipe that can be hung with a strap hanger?

A

4”

24
Q

Hanger used to hang pipe away from ceiling, floor, joists or beams

A

Band hanger

25
Q

Hanger used with a threaded rod attachment

A

Adjustable swivel rings

26
Q

Hanger used to hang pipe from ceilings, beams or joists when attached to a threaded rod.

A

Clevis Hanger

27
Q

What hanger is ideal for pipe which will have horizontal movement?

A

Clevis Hanger

28
Q

What is used to provide solid support for copper or other types of pipe?

A

Epoxy coated pipe stay

29
Q

What is used to hold pipe securely agains a surface?

A

U bolt

30
Q

What hanger allows the movement of pipe during expansion and contraction?

A

Roller hanger

31
Q

Roller hangers are mainly used for what?

A

Larger pipes

32
Q

What is used to attach hanger rods to uni strut or channel?

A

Uni-strut spring nuts

33
Q

Uni-strut clips are used with ____

A

Uni-strut

34
Q

What is used to distribute piping loads over sufficient areas of insulation?

A

Insulation shields

35
Q

What is used to suspend hangers form ceiling, walls, floor joists

A

Metal threaded rod

36
Q

What is the smallest size rod for piping over 13mm (4” diameter)

A

1/2 “

37
Q

What size rod is used for pipe under 4” diameter?

A

8mm (3/8”)

38
Q

What is used to lengthen threaded rod?

A

Rod couplings

39
Q

What is used to join two pieces of rod or coach screws together?

A

Turnbuckles

40
Q

What is used to hang hanger or rods from wooden ceilings or joists?

A

Coach screw rods

41
Q

What is used to secure pipelines to beams and channel iron where thickness do not exceed 3/4”

A

C clamps

42
Q

Name 2 types of C clamp

A

Stamped/welded

Malleable iron

43
Q

What is a yuck way of supporting smaller pipe to steel beams and joists?

A

Caddy clips

44
Q

Name 4 types of concrete anchors

A

Drop in Red - Heads
Quick bolts
Lead anchors
Plastic anchors

Plumbing Theory 1 (5 decks)

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