Manufactured Flashcards
1
Q
1981-1984 features
A
Pitched, asphalt roofs, metal slider, windows, wood, and vinyl siding
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.
3
Q
1989-1991 features
A
Stopped using the word mobile. Vinyl double pane windows, no more metal siding.
4
Q
1992-1996 features
A
Manufactured homes introduced with CSA standard A277
5
Q
1997-Present
A
Common to building code standards. Being built to net zero standards and having to follow step code.
6
Q
Trailer
A
(RV). Hitch visible. Not permanently connected to services. Not covered by PIP
7
Q
CSA park model
A
Looks similar to manufactured home. Built to CSA standard Z241. Seasonal. Connected to outlet
8
Q
Park models
A
Not built to building code. Not covered by PIP. Call under motor vehicle act like an RV
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.
10
Q
Manufactured home
A
Built offsite to CSA Z 240 standard. Registered with BC registry.
11
Q
Modular homes with permanent foundations should have
A
BC registry sticker on electrical panel
CSA A277 sticker
12
Q
Can Modular homes have metal frame for a non permanent foundations
A
Yes
13
Q
CSA z240
CSA A277
A
Z240: manufactured
A277: modular
14
Q
What does this is CSAZ 240 document do
A
Outlines deviations from NBC
15
Q
If the frame does not have outriggers, the beams are
A
Further apart
16
Q
Plumbing drains are pre-built, and
A
Pressure tested
17
Q
Frames must meet these testing requirements
A
Deflection testing
18
Q
Steel frame is bolted to floor through
A
Angle brackets
19
Q
Beams are used to create
A
Large open concepts spaces between 2 halves of double wide
20
Q
Roof slope is usually_____ unless____
A
2.5:12 unless hinged
21
Q
Most roofs have these shingles
A
Architectural asphalt
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
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
24
Q
Single wides usually won’t have these
A
Attic catches, unless it’s a higher pitched roof
25
Why do double wides have an attic hatch?
To access junction boxes that wire two sides together
26
When is the vapour barrier installed?
Along with interior wall finish when the walls are constructed
27
What order is a manufacturer home built
Inside out instead of outside in
28
When is the furnace installed?
After interior walls are in place
29
How does return air travel?
No return air ducts. Return air travels under doors and through the front of the furnace.
30
How is make up air vented?
Directly to furnace fan compartment from roof
31
Brand-name for manufactured home furnaces
Intertherm HE
32
In a fireplace, what connects to the chimney?
Close clearance pipe
33
What is at the top of a chimney cap?
Spark arresters
34
Is the close clearance pipe of a furnace grounded?
Yes. Grounded to chassis
35
Fireplace must have this air source
Direct combustion
36
Fireplaces must be this far from what
1.5 m from exterior door
37
Are fireplaces allowed in bedrooms
No
38
What are the current rules for gas or propane fireplaces?
Direct vent sealed units and have no standing pilot
39
Can gas water heaters be in bathrooms and why?
No. Bathroom fan could draw exhaust into house.
Unless they have a sealed hatch or self closing door with an exterior combustion air source
40
How should grading be done
Topsoil and organic material removed. Graded from centre to outside or side to side with minimum slope of 2%.
41
Ground cover extends how far past building?
6”
42
Ground cover follows this NBC rule
Ground cover in unheated crawlspaces
43
Ground cover types
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
44
Foundation types
Usually on Pierres
Modular= concrete foundation
45
Can concrete piles be used?
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
46
What would screw piles need?
Engineer document
47
Where are concrete and screw piles used more
Flood planes
48
Un reinforced concrete should be how thick
4”
49
Pierre should be how far apart
8 to 10 feet
50
Wood footings must be
Pressure-Treated and at least 3.5 inches thick
51
Wood peers should be pressure-treated below this height, and should be no taller than
6”
24” tall
52
What should be used on wood peers to prevent lateral sliding?
Shims or other blocking
53
Field cut ends of wood should be
Pressure-treated
54
On concrete peers, which way are the cores facing on concrete blocks
Hollow cores facing up to
55
Concrete pier should be how wide, and how how many rows
8 inches wide
Two blocks per row, alternating direction
Filled with concrete or courses, separated by treated plywood
56
When should anchoring be done?
When required based on wind calculations, and potential seismic activities
57
Anchoring must have a specific what determined by an engineer
Pull out resistance. No more than 40 feet apart.
58
Types of anchors
DuckBill
Earth auger
Deadman anchor blocks
59
What should be installed when joining multiple sections?
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
Skirting accommodates what
2 inches of vertical movement due to frost action
61
Crawlspace should be
Vented, naturally, or mechanically
As per the NBC
62
Unheated, crawlspace, natural venting vent requirememts
One square foot minimum for every 538 ft.² of floor area
On opposite sides of building
Prevent entry of snow, rain, insects
63
Can clothes driers and other appliances be vented into a crawlspace
No
64
Where are main water shut off?
Where supply comes out of the ground. So secondary located next to water heater.
65
All supply lines, excluding irrigation, exposed under unit should have
Heat, tape and insulation. Heat tape should be on GFCI circuit.
66
Can waste lines be uninsulated in crawlspace
Not the small ones. Only the large main drain.
67
Where will the junction box be in the crawlspace
Under the panel
68
Look for this grounding in double wide
Connect to panel to frame and both units
69
When will there not be a small junction box in crawlspace under the panel?
When the unit has its own electrical metre
70
Gas lines should be ____ under the unit
Blonded
71
What can wet ground cause underneath?
Peers to settle or lean, wooden peers to rot. Wooden perimeter, skirts, rot, rats, enter. Mould and fungus. Rusting, ductwork frame, etc..
72
Downspout should not connect to
Sewer lines
73
If a unit is on propane, what should be present?
A gas inspection certification by technical safety BC. Recommend buyer obtains a copy.
74
Why is cap flashing more important on manufactured homes?
Some units have no overhang.
75
Where additions have been buttoned up, recommend
Areas totally reliant on sealant either require repair or maintenance
76
No gutters, recommend
Installed
77
Metal siding should be
Bonded to frame
78
Is insulation necessary on skirting
No. Wood rot and nesting might happen.
79
Porches, decks and stairs must be
Freestanding and not structurally attached. Recommend they are attached. (usually built on grade with no frost footing.)
80
Roof types
Metal, torch on, shingles, single ply membrane
81
Types of single ply, flat roofs
EPDM, PVC (vinyl), TPO
Refer to them as membrane roof
82
What to look for on one piece metal roof
Do not walk on them. Should not be fastened with screws. It needs flexibility.
83
Torch on over a metal roof lasts
Last 7 to 10 years because they expand in contracted different rates, causing them to separate
84
Bathroom range, hoods and dryer vents discharge through
Roof vents with flaps and screens
85
Hooded roof vents can allow
Cold air to flow into home when fan isn’t running
86
Why should you not always recommend adding gutters to curved roof units?
May not be possible
87
What to look for in roof overs
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
Why is a metal roof over OK?
Not much weight.
89
What do you recommend with roof over?
Buyer obtain copies of engineers report, if not, structural engineer
90
All attached additions must be
Separate, but it up and sealed. Extra weight presses down on outriggers.
91
What happens when too much extra weight presses down on outriggers
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
All additions should have been built with
A permit
93
Renovations to report
Large sections of exterior walls removed
Heavier finishes (drywall, solid countertops, heavy tiles) cement board
94
Electrical CSA sticker will either read
Z240 for mobile/manufactured
A277 for modular
95
Years of CSA standards
Pre-1966: no standard
1966-1971: CSA electrical only
1972: CSA for everything
96
These are required for sale
Approval labels.
(CSA sticker, technical safety, BC or safety authority silver label)
97
What to report with silver label
Recommend buyer completes due diligence to confirm. Label covers all electrical.
98
Sometimes you can find CSA number
Spec sheet
99
Do wires under the unit need to be outdoor rated and protected
No no. Not exposed to UV.
100
Modular homes signs
Double trusses or hinged trusses
Double beams in crawlspace
Recommend all safety labels present
101
What is a D registered unit?
Linked to the land. Sold with the land. Label still required.
102
How to find electrical service size
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
Propane units need the vent to be
Close to the floor that connects to the exterior to prevent propane in the closet. No vent equals explosive hazard.
104
Check for rotten floors under
Water tanks
105
High efficiency, or mid efficiency.
Roof jack and 636 direct vent
Roof jack= mid
636 Direct vent. = high
106
Roof Jack supplies
Combustion air
107
Curved roofs may have what in attics
Condensation in attic with low airflow. Passive air vents from furnace were added to attic, sucking in air from attic, keeping it dry.
108
What to look for in a new high efficiency furnace added
Cold air return is visible at top
109
These are often mistaken for heat pumps
Heating combo units. Filters may be in the floor.
110
Can you tell it’s an addition from the heat source?
Baseboard heat
111
 bottom two courses of cribbing should be
Pressure-treated
112
All exposed ducting, including dryer vents, should be
Insulated
113
These areas are high risk for leakage
Closet ceilings
114
Limitations
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
