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Rv > Exterior Construction > Flashcards

Exterior Construction Flashcards

1
Q

What’s the thickness or rotary mahogany?

A

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

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2
Q

How can you repair broken or damaged stud?

A

By “sistering”. Adding another piece beside it

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3
Q

What is filon?

A

FRP. Fibre reinforced plastic

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4
Q

What is the safest contact cement?

And what effects it’s drying time?

A

Water based

Water and pressure

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5
Q

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

A

Pop
Buck
Olympic

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6
Q

What are the three types of sheets on the airstreams?

A

Banana wraps
Flat sheets
Segments

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7
Q

What size drill bits are used on the airstream?

A

20 and #30

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8
Q

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

A

It starts at 16” and comes out 9” wide

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9
Q

What is the best way to carry tin?

A

Vertical with the lock down

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10
Q

How is aluminum siding installed?

A

From top to bottom using staples

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11
Q

What kind of windows is required on a motor home?

A

Safety glass

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12
Q

What are the three types of safety glass?

A

Laminated glass
Tempered glass
Plexiglass

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13
Q

What must the front windows be?

A

They must be laminated glass or have a cover over them

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14
Q

What is laminated glass?

A

Glass that has plastic between each layer of glass

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15
Q

What is tempered glass?

A

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

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16
Q

How should the glass be cut for the window frame?

A

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

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17
Q

What should be your two emergency exits?

And where should they be located?

A

A door and a window or roof hatch

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

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18
Q

How big must a escape window be?

How big should a roof hatch be?

A

24x17”

21.6x21.6

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19
Q

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

A

305lbs

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20
Q

How big must the exit label be?

A

12mm high

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21
Q

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

A

Must have a ladder

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22
Q

How big are the usual roof vents and why?

A

14.5” to fit inside the normal 16” trusses

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23
Q

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

A

At least 36”

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24
Q

What can you use to patch a rubber roof?

A

Tedler tape

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25
Q

What is R-value?

A

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

26
Q

What are the 4 common types of roof coverings?

A

Aluminum
Fibreglass
Vinyl
EDPM

27
Q

What does EPDM Stand for?

A

Ethylene propylene diene monomer rubber

28
Q

What does TPO stand for?

A

Thermoplastic polyolefin

29
Q

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

A

The UV

30
Q

What’s is a jaloozy window

A

Like a loover style

31
Q

What’s is a jaloozy window

A

Like a loover style

32
Q

What insulation has the greatest R-rating?

A

Pray foam urethane

33
Q

What is a normal RV walls R rating

A

4-8R

34
Q

What must a motorhomes door latch be?

A

DOT rated

35
Q

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

A

Contact cement

Working time and press time

36
Q

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

A

36 and 3” around the hole

37
Q

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

A

30 degrees

38
Q

What is SMC?

A

Sheet moulded compound

39
Q

What is liquid hardener?

A

Methyl Ethel ketone peroxide

40
Q

What is cream gardener?

A

Benzoyl peroxide

41
Q

What can you use epoxy on?

A

All metals, fibre plastic and all FRP

42
Q

What can you use polyester resin on?

A

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

43
Q

What is Fiberglass made from?

A

Extremely fine glass fibers

44
Q

What is filon made from?

A

Made from polyester resin and chopper fibers

45
Q

What is SMC made from?

A

Polyester resin and long chopped glass fibers

46
Q

What is resin called once it is set?

A

Thermoset plastic

47
Q

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

A

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

48
Q

What is another name for hardener?

A

The catalyst

49
Q

What is used to repair thermosetting plastic?

A

Chemicals and adhesives

50
Q

What is used to repair thermoplastics?

A

Welding

51
Q

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

A

Polyethylene

52
Q

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

A

Thermoplastic will float and will require an adhesive promoter

53
Q

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

A

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

54
Q

What is the common working pressure for plastic welders?

A

3psi

55
Q

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

A

3/16 rod for air

1/8” rod for airless

56
Q

How deap should the V groove be when welding?

A

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

57
Q

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

A

An air-fed type mask

58
Q

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

A

Nitrile rubber

59
Q

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

A

6-8 for fast drying products

8-10 for slow drying

60
Q

How much of an overlap of spray should you do?

A

50% overlap

Rv (23 decks)

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