Exterior Construction

Question 1

What’s the thickness or rotary mahogany?

Answer 1

1/8-3-16
Or
2.7-3.5mm

Question 2

How can you repair broken or damaged stud?

Answer 2

By “sistering”. Adding another piece beside it

Question 3

What is filon?

Answer 3

FRP. Fibre reinforced plastic

Question 4

What is the safest contact cement?

And what effects it’s drying time?

Answer 4

Water based

Water and pressure

Question 5

What are the three types of rivets used on the air stream?

Answer 5

Pop
Buck
Olympic

Question 6

What are the three types of sheets on the airstreams?

Answer 6

Banana wraps
Flat sheets
Segments

Question 7

What size drill bits are used on the airstream?

Answer 7

20 and #30

Question 8

How wide is the yoder siding before it is put through the roller? And how big is it after?

Answer 8

It starts at 16” and comes out 9” wide

Question 9

What is the best way to carry tin?

Answer 9

Vertical with the lock down

Question 10

How is aluminum siding installed?

Answer 10

From top to bottom using staples

Question 11

What kind of windows is required on a motor home?

Answer 11

Safety glass

Question 12

What are the three types of safety glass?

Answer 12

Laminated glass
Tempered glass
Plexiglass

Question 13

What must the front windows be?

Answer 13

They must be laminated glass or have a cover over them

Question 14

What is laminated glass?

Answer 14

Glass that has plastic between each layer of glass

Question 15

What is tempered glass?

Answer 15

Single heat treated pain of glass that can be up to 5 times stronger. When it breaks it disintegrates into tons of tiny pieces

Question 16

How should the glass be cut for the window frame?

Answer 16

Should be a 1/8” space all the way around to prevent stress

Question 17

What should be your two emergency exits?

And where should they be located?

Answer 17

A door and a window or roof hatch

Must be on different walls and should not be higher then 36”

Question 18

How big must a escape window be?

How big should a roof hatch be?

Answer 18

24x17”

21.6x21.6

Question 19

What must the weight rating be on a step or bunk to access the emergency window?

Answer 19

305lbs

Question 20

How big must the exit label be?

Answer 20

12mm high

Question 21

What do you need on a unit with an escape latch out the roof?

Answer 21

Must have a ladder

Question 22

How big are the usual roof vents and why?

Answer 22

14.5” to fit inside the normal 16” trusses

Question 23

How far must an intake vent be from a sewer exhaust?

Answer 23

At least 36”

Question 24

What can you use to patch a rubber roof?

Answer 24

Tedler tape

Question 25

What is R-value?

Answer 25

It measures the insulation’s resistance to heat flow or thermal resistance

Question 26

What are the 4 common types of roof coverings?

Answer 26

Aluminum Fibreglass Vinyl EDPM

Question 27

What does EPDM Stand for?

Answer 27

Ethylene propylene diene monomer rubber

Question 28

What does TPO stand for?

Answer 28

Thermoplastic polyolefin

Question 29

What is the number one cause of damage to caulking and rubber roofs?

Answer 29

The UV

Question 30

What’s is a jaloozy window

Answer 30

Like a loover style

Question 31

What’s is a jaloozy window

Answer 31

Like a loover style

Question 32

What insulation has the greatest R-rating?

Answer 32

Pray foam urethane

Question 33

What is a normal RV walls R rating

Answer 33

4-8R

Question 34

What must a motorhomes door latch be?

Answer 34

DOT rated

Question 35

What are laminated walls put together with and what must you keep in mind?

Answer 35

Contact cement Working time and press time

Question 36

For repairing fibreglass holes what grid grinding disc should you use to clean it? And how far should you grind?

Answer 36

#36 and 3” around the hole

Question 37

What filling fibreglass hole What degree of bevel should you put on it?

Answer 37

30 degrees

Question 38

What is SMC?

Answer 38

Sheet moulded compound

Question 39

What is liquid hardener?

Answer 39

Methyl Ethel ketone peroxide

Question 40

What is cream gardener?

Answer 40

Benzoyl peroxide

Question 41

What can you use epoxy on?

Answer 41

All metals, fibre plastic and all FRP

Question 42

What can you use polyester resin on?

Answer 42

Doesn’t bond to metal and only use on polyester FRP

Question 43

What is Fiberglass made from?

Answer 43

Extremely fine glass fibers

Question 44

What is filon made from?

Answer 44

Made from polyester resin and chopper fibers

Question 45

What is SMC made from?

Answer 45

Polyester resin and long chopped glass fibers

Question 46

What is resin called once it is set?

Answer 46

Thermoset plastic

Question 47

When doing fibreglass repairs, what should you use to clean the surface?

Answer 47

Acetone, composite cleaner or isopropyl alcohol. And scuff with #80 grit paper

Question 48

What is another name for hardener?

Answer 48

The catalyst

Question 49

What is used to repair thermosetting plastic?

Answer 49

Chemicals and adhesives

Question 50

What is used to repair thermoplastics?

Answer 50

Welding

Question 51

What is the most common plastic used in the RV industry?

Answer 51

Polyethylene

Question 52

If you take a sliver or thermoset plastic and thermoplastic and put it in water. Which one will float?

Answer 52

Thermoplastic will float and will require an adhesive promoter

Question 53

What are plastic welding heat elements and what do they get heated too?

Answer 53

A ceramic or stainless electric heating element that makes hot air at 450-650 degrees

Question 54

What is the common working pressure for plastic welders?

Answer 54

3psi

Question 55

What size plastic rod should be used on air and airless welders?

Answer 55

3/16 rod for air | 1/8” rod for airless

Question 56

How deap should the V groove be when welding?

Answer 56

75% of the way through and a 1/4” beyond damaged area

Question 57

When spraying anything that requires a catalyst or hardener you are required to have what?

Answer 57

An air-fed type mask

Question 58

What kind of gloves don’t allow solvents to penetrate?

Answer 58

Nitrile rubber

Question 59

What is the recommended spraying distance for fast drying and slow drying products?

Answer 59

6-8 for fast drying products | 8-10 for slow drying

Question 60

How much of an overlap of spray should you do?

Answer 60

50% overlap