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Manufactured Homes > Manufactured > Flashcards

Manufactured Flashcards

1
Q

1981-1984 features

A

Pitched, asphalt roofs, metal slider, windows, wood, and vinyl siding

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2
Q

1985-1988 features

A

Increased insulation and attic, ventilation, metal, thermal pane, windows, skylights, vinyl, coating chip rock, interior wall, panels, cathedral ceilings. Bogey transport systems.

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3
Q

1989-1991 features

A

Stopped using the word mobile. Vinyl double pane windows, no more metal siding.

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4
Q

1992-1996 features

A

Manufactured homes introduced with CSA standard A277

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5
Q

1997-Present

A

Common to building code standards. Being built to net zero standards and having to follow step code.

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6
Q

Trailer

A

(RV). Hitch visible. Not permanently connected to services. Not covered by PIP

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7
Q

CSA park model

A

Looks similar to manufactured home. Built to CSA standard Z241. Seasonal. Connected to outlet

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8
Q

Park models

A

Not built to building code. Not covered by PIP. Call under motor vehicle act like an RV

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9
Q

Mobile home

A

Built off site prior to 1976. Not likely to any standard. May have CSA for electrical only. May see axel and wheels.

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10
Q

Manufactured home

A

Built offsite to CSA Z 240 standard. Registered with BC registry.

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11
Q

Modular homes with permanent foundations should have

A

BC registry sticker on electrical panel
CSA A277 sticker

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12
Q

Can Modular homes have metal frame for a non permanent foundations

A

Yes

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13
Q

CSA z240
CSA A277

A

Z240: manufactured
A277: modular

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14
Q

What does this is CSAZ 240 document do

A

Outlines deviations from NBC

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15
Q

If the frame does not have outriggers, the beams are

A

Further apart

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16
Q

Plumbing drains are pre-built, and

A

Pressure tested

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17
Q

Frames must meet these testing requirements

A

Deflection testing

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18
Q

Steel frame is bolted to floor through

A

Angle brackets

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19
Q

Beams are used to create

A

Large open concepts spaces between 2 halves of double wide

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20
Q

Roof slope is usually_____ unless____

A

2.5:12 unless hinged

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21
Q

Most roofs have these shingles

A

Architectural asphalt

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22
Q

Three ways of double wide roofs

A

2 halves meet in middle

2 halves require ridge installed on site

2 halves hinged and elevated to meet in middle

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23
Q

Why is an electrical panel installed as a main?

A

In case the unit is delivered to a lot with its own metre base

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24
Q

Single wides usually won’t have these

A

Attic catches, unless it’s a higher pitched roof

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25
Q

Why do double wides have an attic hatch?

A

To access junction boxes that wire two sides together

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26
Q

When is the vapour barrier installed?

A

Along with interior wall finish when the walls are constructed

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27
Q

What order is a manufacturer home built

A

Inside out instead of outside in

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28
Q

When is the furnace installed?

A

After interior walls are in place

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29
Q

How does return air travel?

A

No return air ducts. Return air travels under doors and through the front of the furnace.

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30
Q

How is make up air vented?

A

Directly to furnace fan compartment from roof

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31
Q

Brand-name for manufactured home furnaces

A

Intertherm HE

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32
Q

In a fireplace, what connects to the chimney?

A

Close clearance pipe

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33
Q

What is at the top of a chimney cap?

A

Spark arresters

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34
Q

Is the close clearance pipe of a furnace grounded?

A

Yes. Grounded to chassis

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35
Q

Fireplace must have this air source

A

Direct combustion

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36
Q

Fireplaces must be this far from what

A

1.5 m from exterior door

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37
Q

Are fireplaces allowed in bedrooms

A

No

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38
Q

What are the current rules for gas or propane fireplaces?

A

Direct vent sealed units and have no standing pilot

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39
Q

Can gas water heaters be in bathrooms and why?

A

No. Bathroom fan could draw exhaust into house.

Unless they have a sealed hatch or self closing door with an exterior combustion air source

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40
Q

How should grading be done

A

Topsoil and organic material removed. Graded from centre to outside or side to side with minimum slope of 2%.

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41
Q

Ground cover extends how far past building?

A

6”

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42
Q

Ground cover follows this NBC rule

A

Ground cover in unheated crawlspaces

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43
Q

Ground cover types

A

50mm asphalt
100mm of 15MPA Portland cement concrete
Type S roll roofing
0.10 mm polyethylene
Joists in sheet type ground cover lapped min 100mm and weighted down

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44
Q

Foundation types

A

Usually on Pierres
Modular= concrete foundation

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45
Q

Can concrete piles be used?

A

Yes, but should be 8 inch is in diameter or 8 in.² and connected to below grade footing, if in frost zone and reinforced by rebar

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46
Q

What would screw piles need?

A

Engineer document

47
Q

Where are concrete and screw piles used more

A

Flood planes

48
Q

Un reinforced concrete should be how thick

A

4”

49
Q

Pierre should be how far apart

A

8 to 10 feet

50
Q

Wood footings must be

A

Pressure-Treated and at least 3.5 inches thick

51
Q

Wood peers should be pressure-treated below this height, and should be no taller than

A

6”
24” tall

52
Q

What should be used on wood peers to prevent lateral sliding?

A

Shims or other blocking

53
Q

Field cut ends of wood should be

A

Pressure-treated

54
Q

On concrete peers, which way are the cores facing on concrete blocks

A

Hollow cores facing up to

55
Q

Concrete pier should be how wide, and how how many rows

A

8 inches wide
Two blocks per row, alternating direction
Filled with concrete or courses, separated by treated plywood

56
Q

When should anchoring be done?

A

When required based on wind calculations, and potential seismic activities

57
Q

Anchoring must have a specific what determined by an engineer

A

Pull out resistance. No more than 40 feet apart.

58
Q

Types of anchors

A

DuckBill
Earth auger
Deadman anchor blocks

59
Q

What should be installed when joining multiple sections?

A

Extra peers under any posts that are supporting the end of a beam. Usually near where an open concept area is present in a double wide.

60
Q

Skirting accommodates what

A

2 inches of vertical movement due to frost action

61
Q

Crawlspace should be

A

Vented, naturally, or mechanically
As per the NBC

62
Q

Unheated, crawlspace, natural venting vent requirememts

A

One square foot minimum for every 538 ft.² of floor area
On opposite sides of building
Prevent entry of snow, rain, insects

63
Q

Can clothes driers and other appliances be vented into a crawlspace

A

No

64
Q

Where are main water shut off?

A

Where supply comes out of the ground. So secondary located next to water heater.

65
Q

All supply lines, excluding irrigation, exposed under unit should have

A

Heat, tape and insulation. Heat tape should be on GFCI circuit.

66
Q

Can waste lines be uninsulated in crawlspace

A

Not the small ones. Only the large main drain.

67
Q

Where will the junction box be in the crawlspace

A

Under the panel

68
Q

Look for this grounding in double wide

A

Connect to panel to frame and both units

69
Q

When will there not be a small junction box in crawlspace under the panel?

A

When the unit has its own electrical metre

70
Q

Gas lines should be ____ under the unit

A

Blonded

71
Q

What can wet ground cause underneath?

A

Peers to settle or lean, wooden peers to rot. Wooden perimeter, skirts, rot, rats, enter. Mould and fungus. Rusting, ductwork frame, etc..

72
Q

Downspout should not connect to

A

Sewer lines

73
Q

If a unit is on propane, what should be present?

A

A gas inspection certification by technical safety BC. Recommend buyer obtains a copy.

74
Q

Why is cap flashing more important on manufactured homes?

A

Some units have no overhang.

75
Q

Where additions have been buttoned up, recommend

A

Areas totally reliant on sealant either require repair or maintenance

76
Q

No gutters, recommend

A

Installed

77
Q

Metal siding should be

A

Bonded to frame

78
Q

Is insulation necessary on skirting

A

No. Wood rot and nesting might happen.

79
Q

Porches, decks and stairs must be

A

Freestanding and not structurally attached. Recommend they are attached. (usually built on grade with no frost footing.)

80
Q

Roof types

A

Metal, torch on, shingles, single ply membrane

81
Q

Types of single ply, flat roofs

A

EPDM, PVC (vinyl), TPO
Refer to them as membrane roof

82
Q

What to look for on one piece metal roof

A

Do not walk on them. Should not be fastened with screws. It needs flexibility.

83
Q

Torch on over a metal roof lasts

A

Last 7 to 10 years because they expand in contracted different rates, causing them to separate

84
Q

Bathroom range, hoods and dryer vents discharge through

A

Roof vents with flaps and screens

85
Q

Hooded roof vents can allow

A

Cold air to flow into home when fan isn’t running

86
Q

Why should you not always recommend adding gutters to curved roof units?

A

May not be possible

87
Q

What to look for in roof overs

A

Only engineered to take weight of original roof and framing
Look in attic for old roof covers. Where are the plumbing stacks?
Should be independently supported

88
Q

Why is a metal roof over OK?

A

Not much weight.

89
Q

What do you recommend with roof over?

A

Buyer obtain copies of engineers report, if not, structural engineer

90
Q

All attached additions must be

A

Separate, but it up and sealed. Extra weight presses down on outriggers.

91
Q

What happens when too much extra weight presses down on outriggers

A

Outriggers don’t bend or pull away from the main beam, but twist main beam outwards. Then outrigger, slopes down, floor sags. Exterior door, sag, banana effect. Recommend engineers document.

92
Q

All additions should have been built with

A

A permit

93
Q

Renovations to report

A

Large sections of exterior walls removed
Heavier finishes (drywall, solid countertops, heavy tiles) cement board

94
Q

Electrical CSA sticker will either read

A

Z240 for mobile/manufactured
A277 for modular

95
Q

Years of CSA standards

A

Pre-1966: no standard
1966-1971: CSA electrical only
1972: CSA for everything

96
Q

These are required for sale

A

Approval labels.
(CSA sticker, technical safety, BC or safety authority silver label)

97
Q

What to report with silver label

A

Recommend buyer completes due diligence to confirm. Label covers all electrical.

98
Q

Sometimes you can find CSA number

A

Spec sheet

99
Q

Do wires under the unit need to be outdoor rated and protected

A

No no. Not exposed to UV.

100
Q

Modular homes signs

A

Double trusses or hinged trusses
Double beams in crawlspace
Recommend all safety labels present

101
Q

What is a D registered unit?

A

Linked to the land. Sold with the land. Label still required.

102
Q

How to find electrical service size

A

Separate feed from Hydro room means the main breaker is in that room next to the meter. Recommend buyer verify service size with park.

103
Q

Propane units need the vent to be

A

Close to the floor that connects to the exterior to prevent propane in the closet. No vent equals explosive hazard.

104
Q

Check for rotten floors under

A

Water tanks

105
Q

High efficiency, or mid efficiency.
Roof jack and 636 direct vent

A

Roof jack= mid
636 Direct vent. = high

106
Q

Roof Jack supplies

A

Combustion air

107
Q

Curved roofs may have what in attics

A

Condensation in attic with low airflow. Passive air vents from furnace were added to attic, sucking in air from attic, keeping it dry.

108
Q

What to look for in a new high efficiency furnace added

A

Cold air return is visible at top

109
Q

These are often mistaken for heat pumps

A

Heating combo units. Filters may be in the floor.

110
Q

Can you tell it’s an addition from the heat source?

A

Baseboard heat

111
Q

 bottom two courses of cribbing should be

A

Pressure-treated

112
Q

All exposed ducting, including dryer vents, should be

A

Insulated

113
Q

These areas are high risk for leakage

A

Closet ceilings

114
Q

Limitations

A

Can’t walk on metal roofs, attic space is not accessible
In ability to see between belly and floor. (framing.)
Crawlspace is inaccessible
Rat infested

Manufactured Homes (1 decks)

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