CLADDING AND LAGGING

Question 1

What is the purpose of cladding or lagging any object

Answer 1

Protect the insulation beneath it

Question 2

What 4 methods are used for material protection ?

Answer 2

Weatherproofing

Fireproofing

Chemical resistance

Soundproofing

Question 3

What is the most common cladding material ?

Answer 3

Aluminum

Question 4

What material is the best option when the insulation has a chance of being subjected to fires or chemical attack

Answer 4

Stainless steel

Question 5

What are the disadvantages of stainless steel ?

Answer 5

Expensive

Difficult to cut and form

Question 6

What material is not commonly used in cladding and lagging ?

Answer 6

Galvanized iron

Question 7

What is the purposes of moisture barriers ?

Answer 7

To Prevent chemical attack at the metal insulation interface

Question 8

what cladding material has an inside rubber liner added to lower sound levels ?

Answer 8

Muffle jacket

Question 9

What size range do pressed elbows fit on ?

Answer 9

1”-36” inside pipe size

Question 10

Who chooses the various material finishes found on cladding materials?

Answer 10

Design engineer

Question 11

What is the most common finish used in cladding and lagging but is highly susceptible to scratching and denting ?

Answer 11

Smooth finish

Question 12

What is the strongest and most dent/scratch resistant finish used in cladding and lagging ?

Answer 12

Corrolon finish

Question 13

What do you use when you cut off insulation perpendicular to the length of the pipe ?

Answer 13

Metal end caps

Question 14

What are two main types of end caps ?

Answer 14

Crimp type

Lock form type

Question 15

When insulation is cut back at a 45 degree angle what must be used to cover the ends?

Answer 15

Metal bevels

Question 16

What are expansion springs used for ?

Answer 16

Stainless steel springs used to accommodate the expansion and contraction of large diameter pipes, tanks, vessels, heat exchangers and equiptment

Question 17

What are the two types of banding clips?

Answer 17

Wing seal type or crimp type

Question 18

All laps on material must be a minimum of _____”when cladding piping and a minimum of_______” when cladding equiptment

Answer 18

2 “

3”

Question 19

When cladding horizontal piping the laps should be placed at 2 o clock on the concealed side of the pipe with all laps placed away from prevailing winds T or F

Answer 19

True

Question 20

What type of clips should be used when installing vertical piping ?

Answer 20

S clips

Question 21

What may be added to a large lock formed end cap for extra strength ?

Answer 21

Cross break

Question 22

how much overlap should accompany all overlapping vertical sheeting ?

Answer 22

3”

Question 23

When you are installing corrugated sheeting on horizontal applications you must maintain a minimum of ________ overlap between sheets

Answer 23

2 corrugation

Question 24

All banding clips should be placed on _______ side of the pipe when possible ?

Answer 24

Concealed side

Question 25

What common method is used for laying out the pattern for a bevel ?

Answer 25

Square method

Question 26

What information is required when laying out a two piece crimp type end cap?

Answer 26

OD of pipe OD of insulation Amount of crimp

Question 27

On gore elbows, for diameters up to and including 8” the gore end lap should be ______

Answer 27

2”

Question 28

On gore elbows, for diameters larger than 8 how much should you allow for the end lap?

Answer 28

4”

Question 29

The gore total side lap should be ______ for elbows with a diameter up to and including 8. For elbows with diameters larger than 8 you should allow for a side lap of_______

Answer 29

1/2” and 1 inch

Question 30

The lap for aluminum cladding on horizontal pipe is usually placed away from prevailing winds at _____

Answer 30

2, o clock

Question 31

Stainless steel cladding can be used in place of aluminum for what purpose?

Answer 31

For chemical and fire resistance

Question 32

On insulated tanks where excessive expansion and contraction takes place, the aluminum should be fastened with stainless steel bands and________

Answer 32

Expansion springs

Question 33

When installing corrugated sheets on a vertical tower, what should be used to permanently prevent the sheets from sliding down?

Answer 33

S clips

Question 34

In order to layout aluminum bevels with a square, which dimensions would be placed onto the square ?

Answer 34

1/2 the OD of pipe 1/2 the OD of insulation and crimp

Question 35

When laying out a gore pattern for a 90 degree elbow in order to have sixteen equal divisions on a stretch out, the half circle drawn must be divided into how many divisions ?

Answer 35

8

Question 36

What method is used to layout a gore pattern?

Answer 36

Parallel line development

Question 37

Why do we caulk any type of cladding ?

Answer 37

To prevent water from getting into the insulation