Cladding And Lagging By Ben Flashcards

1
Q

What is the primary purpose of cladding or lagging?

A

To protect the insulation beneath it.

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2
Q

What types of protection are there?

A

Weather-proofing
Fire-proofing
Chemical resistance
Sound proofing

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3
Q

What is the most used material for fireproofing?

A

Stainless steel.

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4
Q

How can cladding materials be designed to reduce noise level?

A

With the use of an additional rubber liner to help muffle the sound.

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5
Q

What is the most common cladding material?

A

Aluminum

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6
Q

What are the advantages of aluminum as a cladding material?

A

Lightweight
Easy to cut
Relatively expensive
Readily avaliable in formed peices

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7
Q

What are the disadvantages of aluminum?

A

Low strength
Not very chemical resistant
Not fireproof.

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8
Q

Stainless steel is used in what specialty application?

A

Petrol chemical industry, because of its resistance to fire and chemical attack.

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9
Q

What are the disadvantages of using stainless steel?

A

Very expensive.
Very difficult to cut and form.

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10
Q

What are moisture barriers used for?

A

Prevent chemical attack at the metal insulation interface.

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11
Q

What is a muffle jacket?

A

A cladding material that has an inside rubber liner added to lower sound levels.

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12
Q

What is the most common finish?

A

Smooth finish, which has no grain or emossment. It is highly susceptible to scratching and denting.

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13
Q

Corrugated finishes are very commonly used and are more scratch & dent resistant than smooth finish. True or False?

A

True.

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14
Q

Which finish although not commonly used, is the most scratch and dent resistant?

A

Corrolon.

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15
Q

When are mitered elbows typically used?

A

Mainly on large mitered elbows, sweeps, or where it is difficult for you to use pressed elbows.

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16
Q

What are the two main types of end caps?

A

Crimp type end cap.
Lock form type end cap.

17
Q

When you cut insulation back at a 45° angle you use metal ____ to cover the ends of the insulation.

A

Bevels.

18
Q

S clips are used to support sheeting or piping and to maintain a set spacing between them. True or False?

A

True.

19
Q

What are tear drops used for?

A

Support banding between the sheets and to prevent them from sliding or becoming too uneven.

20
Q

Are pop rivets permanent mechanical fasteners?

A

Yes.

21
Q

You should always use screws made from the same material as the cladding material True or False?

A

True. To prevent galvanic corrosion.

22
Q

Laps on material must be a minimum of what?

A

2” for pipe
3” for equipment.

23
Q

What is the lap for both vertical and horizontal piping?

A

2”

24
Q

When must metal bevels ALWAYS be used?

A

When the sides of the component you are cladding are not parallel to one another.

25
Q

What is a common method used to lay out bevels?

A

Squaring method.