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Safety and Materials > Cast Iron, Iron pipe & historic pipe > Flashcards

Cast Iron, Iron pipe & historic pipe Flashcards

1
Q

what is glass pipe commonly used for

A
  • corrosive waste for laboratories

- food processing plants

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2
Q

can 6 in Pyrex glass pipe can be used in pressure applications

A

false

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3
Q

what does a SHCISP mean

A

single hub clay and iron soil pipe

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4
Q

cast iron has________ to give it strength and ductility

A

magnesium

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5
Q

what are three types of cast iron soil pipes

A

no hub, one hub, two hubs

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6
Q

what is a 22.5 degree elbow

A

1 sixteenth bend

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7
Q

what are all joining methods for hub & spigot cast iron soil pipe

A

caulked lead
hot poured joints
cold caulked joints
compression joints

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8
Q

what are all types of clean outs one will find in a cast iron soil piping system

A

line clean out
Barrett clean out
bolt top
screwed top

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9
Q

caulking lead must be _____ pure

A

99.73%

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10
Q

when tightening mechanical joints, you should torque screws

A

55-60 pounds per sq in

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11
Q

cast iron soil fittings have pressure rating of

A

350 psi

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12
Q

cast iron pipe is coated on inside and out with _____ to increase corrosion resistance

A

bitumen

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13
Q

two methods of cutting cast iron pipe are

A

snap cutters and hammer or chisel

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14
Q

minimum dimensions of flashing in Alberta

A

20in x 20in (500mm x 500mm)

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15
Q

when fasteners are to be placed in a wall, ceiling or floor, consideration must be given to

A

unseen hazards in the base material

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16
Q

what does the term deflection refer to

A

deviation from the center line or snaking of the pipe between hangers

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17
Q

which screw has the greatest mechanical advantage

A

sheet metal screws cause the threads are closer

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18
Q

fastener anchor catergories are divided into

A

light and heavy duty anchors

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19
Q

pipes are supported in order to

4 reasons

A

carry weight of pipe and contents
help grade the piping system with adequate slope
prevent sagging or deflection
allow thermal movement of the piping system

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20
Q

welded steel brackets are recommended for loads up to 3000 lbs
T,F

A

true

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21
Q

ready rod comes in what dimensions

A

quarter, half, three quarter and five eighths inches

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22
Q

oxidation is accelerated by an increase in temperature

T,F

A

True

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23
Q

electrolysis is corrosion in the presence of very mild acidic water and electrical current generated by the water movement
T,F

A

True

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24
Q

what is installed to control electrolysis

A

dielectric union, nipple, bushing

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25
Q

clips and strapping are usually used on pipe diameters up to 4in
T,F

A

true

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26
Q

which support have the largest capacity for load

A

beam clamp

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27
Q

snap-in pipe protectors are used for

A

isolation the piping from steel studs

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28
Q

U-bolt are used for support and thermal expansion of pipe

T,F

A

true

29
Q

why are protective coatings applied to hangers

A

to protect the hangers and piping

30
Q

clevis hangers are widely used as they can be adjusted

T,F

A

true

31
Q

another name for Unistrut

A

power strut

32
Q

Can. Plumbing code states
Cast iron pipe not approved for residential service
T,F

A

False

33
Q

cast iron pipe has a

A

high carbon content

34
Q

no hub soil pipe is joined by

A

MJ clamp

35
Q

a one sixteenth bend is equivalent to

A

22.5 degrees

36
Q

when installing hub and spigot pipe, the hub is always placed

A

downstream

37
Q

cast iron pipes is never used for portable water applications
T,F

A

False

38
Q

dust, fumes and chemicals are common hazards associated with ______pipe

A

fiberglass

39
Q

common use of lead in plumbing

A

no longer used

40
Q

one pound of lead gives you a sheet 1’x1’x_____ thick

A

one sixty-fourth

41
Q

historical pipe manufactured from coal tar pitch and cellulose fibers is

A

bitimus fiber pipe

42
Q

pipe that will carry all known chemicals except hydroflouric acid is

A

vitrified clay pipe

43
Q

aluminum pipe requires what

A

isolated hangars

44
Q

transite and century are trade names for _____ pipe

A

AC

45
Q

when cutting AC pipe ______ protection is of the utmost importance

A

respiratory

46
Q

always ensure you ____ the gasket prior to joining bell and spigot plastic pipe

A

lubricate

47
Q

origin of term plumber

A

lead worker

48
Q

In what way does Duriron differ from gray cast iron?

A

Silicon is added, increased corrosion resistance, more brittle and had had a higher rate of expansion

49
Q

List the weight of cast iron approved for use in Alberta

A

18 kN

50
Q

Ductile iron pipe

A

Adding an inoculate, usually magnesium, additional strength, toughness and ductility

51
Q

Carbon can be found in cast iron in two ways

A

Graphite

Chemically dissolved

52
Q

Characteristics of gray iron

A
  • High resistance to wear
  • Good corrosion resistance
  • Low rate of thermal expansion
  • easily cast at Temp. Around 1315C (2400F)
  • poor resistance to shock (fractures easily)
53
Q

Size and lengths for SHCISP

A

2”, 3”, 4” and 6”

5’ and 10’

54
Q

MJ soil pipe size and length

A

1 1/2”, 2”, 3” and 4”

10’ lengths

55
Q

What are prime qualities of Oakum and Lead

A

Extremely rigid, has sufficient flexibility to permit a slight deflection the joint without breaking hub or damaging the seal

56
Q

Tools and equipment for Oakum and leaf

A
  • Yarning/packing iron

- asbestos pouring rope (running rope)

57
Q

What tools and equipment are needed to prepare lead for Oakum and Lead

A
  • 99.73% pure lead
  • 10-pound notched bars
  • 25-pound strings
58
Q

What temp does Lead have to be at preparation for Oakum lead

A

327*C

620*F

59
Q

Cold/damp Lead or moisture on the ladle with hot lead can cause

A

Lead to explode and may result in possible injury to anyone around

60
Q

When inserting the spigot end of a pipe or fitting into a hub you need to?

A

Properly centre and bottom the spigot, to prevent Oakum from being forced into the pipe

61
Q

Yarn and Oakum does what for joints and pipe

A

Retains molten lead, seals the joint, centres the pipe and gives the joint flexibility

62
Q

The weight of Oakum in a joint is

A

1/10th of the weight of the require lead. Required lead in a joint 3/4 pound per inch diameter

63
Q

Cast iron water service piping is designed for

A

Pressure water installations. Raw potable water systems, slurries and process piping systems. May be used for sewage system that have a pressure requirement

64
Q

Cast iron soil pipe have no

A

Pressure rating and are used in drainage, waste and vent piping system.

65
Q

What is the lowest and highest rating on compression or push-on joint

A

350 psi

Ductile iron pipe push-on joints operating pressure 1000psi

66
Q

All mechanical couplings used for joining hubless pipe

A

Must be approved for pressure application

67
Q

What size of glass pipe is rated at 100 psi

A

1/2”, 3/4” 1”

68
Q

What size of glass pipe is rated at 75 psi

A

1 1/2”, 2”, 3”

69
Q

What size of glass pipe is rated at 50 psi

A

4”

Safety and Materials (3 decks)

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