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Plumbing Theory 1 > Cast Iron & Glass Pipe > Flashcards

Cast Iron & Glass Pipe Flashcards

1
Q

5 advantages of cast iron pipe

A
  1. Superior noise suppression
  2. Fire resistant and will not produce toxic gas
  3. Low thermal expansion
  4. Very rigid and extremely strong and durable
  5. Corrosion resistant if protective coatings are present
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2
Q

Name 3 types of caulked joints

A

Lead and Oakum
Bi Seal
Pc - 4

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3
Q

How much lead or pc-4 is used on a caulked joint

A

1 inch or 25 mm

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4
Q

What type of caulked joint uses a neoprene gasket?

A

Bu-Seal

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5
Q

Name 4 disadvantages of cast iron.

A
  1. Heavy compared to most drainage materials
  2. Installation is expensive and time consuming
  3. Material costs are expensive
  4. Special tools and equipment are often required
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6
Q

What is a compression joint?

A

Mechanical type joints that are joined by a neoprene gasket or sleeve.

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7
Q

Why must extra consideration be taken to support suspended piping with compression joints?

A

They are extremely flexible

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8
Q

What size is the smallest cast iron pipe that may be assembled with mechanical joint couplings?

A

1-1/4

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9
Q

What size are the largest MJ couplings that may be purchased?

A

15” diameter in size

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10
Q

Name 2 types of MJ couplings.

A

Type 1

Type 2

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11
Q

What type of MJ coupling consists of a neoprene sleeve completely surrounded with a corrugated stainless steel sheath

A

Type 1 MJ coupling

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12
Q

On a type 1 MJ coupling what are two stainless steal gear clamps attached to?

A

Attached to the sheath for tightening purposes

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13
Q

What type of MJ coupling consists of a heavier, specifically designed neoprene sleeve?

A

Type 2

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14
Q

On a type 2 MJ coupling where do 2 stainless steel gear clamps fit?

A

Into slots in the sleeve

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15
Q

In a type 2 MJ coupling why is a sheath not required?

A

Because of the increased thickness of the sleeve

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16
Q

What are all MJ couplings tightened to?

A

60 lbs/ft

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17
Q

What type of clamp screws may not be used in a plumbing system?

A

Cadmium coated

18
Q

Gaskets and sleeves shall be of ______ ______ ______ and CSA APPROVED

A

Compounded electrometric rubber

19
Q

Sheaths, screw clamps and all related must and bolts shall be of _______ ______

A

Stainless steel

20
Q

What are riser clamps used for?

A

To support MJ cast iron vertical stacks

21
Q

What are Bibby St.Croix pipe hangers?

A

Specialty designed hangers which are used to support both sides of horizontally installed cast iron piping

22
Q

What are Clevis hangers?

A

Used on both sides of a MJ horizontal connection

23
Q

What type of cutter has two steel legs and a chain with teeth?

A

Snap cutters.

24
Q

What type of cutter has a chain with teeth and a ratchet type handle?

A

Ratchet snap cutter

25
What kid of blade does an electric chop saw have?
Carbon blade
26
What is an extremely brittle type of cast iron pipe?
Duriron pipe
27
When is duriron pipe used?
With aggressive fluids such as acids, solvents, bleached or detergents
28
Where is glass pipe primarily used
Drainage systems where chemicals are used
29
Name 7 properties of glass pipe
1. Transparent 2. Light weight 3. Durable 4. Fire proof 5. Low rate of expansion 6. Can be sterilized 7. Resistant to corrosion
30
Name 4 joining methods of glass pipe.
1. Plain end couplings 2. Halved end couplings 3. Flange or mechanical couplings 4. Gaskets usually made of Teflon
31
What are 5 applications of glass pipe?
1. Laboratories 2. Industrial installations where acids are used 3. Research (waste monitoring in pipe visually) 4. Refineries- Petroleum products 5. Dairy products
32
What is required of underground glass pipe installation?
Must be wrapped in styrofoam jackets called a Bury-PAC
33
What diameter of cutting glass pipe uses heat on the outside while an inside cutter with a diamond wheel is used to score or scribe an arc?
Large diameter pipe
34
What size glass pipe is cut using a diamond wheeled cutter to score the outside of the pipe
Small diameter pipe
35
A diamond blade saw can be used to cut what kind of pipe
Glass
36
______ installation must allow for sideways movement of the pipe
Horizontal
37
What 2!types of hangers can be used with glass pipe?
Clevis or Trapeze hangers
38
With glass pipe all hangers must be ______
Padded
39
With glass pipe vertical runs must be supported how often?
At each floor
40
How must vertical run glass pipe be supported?
With padded friction clamps placed around the pipe or underneath couplings
41
All acid waste discharging from glass piping systems must what?
Be neutralized in special tanks
42
True or False. Glass pipe and fittings do not have to be CSA approved.
True

Plumbing Theory 1 (5 decks)

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