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4th Year > 4th Year Carpenter Review Module > Flashcards

4th Year Carpenter Review Module Flashcards

1
Q

The amount that a hip rafter is backed or dropped is a function of what to things

A

Roof slope and rafter thickness

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2
Q

The shortening of the top end of a hip rafter is one half diagonal of what roof member?

A

Common rafter

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3
Q

What is the minimum clearance between wood framing and masonry fireplace?

A

50 mm

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4
Q

What is the main advantage in using air-entrained concrete

A

Reduces the effect of freeze-thaw cycles

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5
Q

Water for concrete should be of what quality

A

Potable

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6
Q

The strength of concrete prior to proper curing is most affected by what?

A

Water/cement ratio

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7
Q

What is the purpose of construction joints

A

To stop the place of concrete at a pre determined place

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8
Q

What is the purpose of isolation joints

A

Allows separation of 2 concrete members to allow independent movement

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9
Q

Why are bulk heads installed in forms

A

To stop the placement of concrete at a pre determined place

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10
Q

water-stop is normally found in conjunction with what type of joint?

A

Construction joint

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11
Q

Post and beam construction is defined as having members at what minimum on center spacing

A

Over 600mm o/c

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12
Q

What is the primary purpose of reinforcing rods in concrete structures

A

To resist tension and sheer

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13
Q

Rotating or a twisting action that is prevalent in tall columns is called what type of force?

A

Torsion

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14
Q

What type of butt hinges are required for exterior doors that swing out

A

NRP hinges : a hinge with a non removable pin

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15
Q

What type of butt hinges are required for exterior doors that swing out

A

NRP hints : a hinge with a non removable pin

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16
Q

Holes in a solid lumber floor joists should be in what portion of the joist

A

Middle. Max hole diameter is 1/4 depth of joist

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17
Q

What is the primary purpose of cross bridging

A

Joist restraint- To keep joists upright

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18
Q

Double doors without a center mullion, leading to an exit require what hardware

A

Panic hardware flush bolts and an astragal

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19
Q

At what height do scaffolds require a toe board?

A

3.5 m

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20
Q

What is the minimum thickness of concrete that can be used in a basement floor

A

75mm

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21
Q

Define rafter run

A

Out side of wall to centre of ridge

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22
Q

Define rafter span

A

Edge of support to edge of support (horizontal)

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23
Q

The name “Portland cement” refers to what?

A

The binding ingredient (adhesive) that reacts with water in concrete prior

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24
Q

Dead loads as applied to floor systems are defined how?

A

The weight of all permanent components of a building

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25
Concrete forms that are subjected to extreme lateral pressure can have deflection reduced by what procedures
Reduced tie spacing more walers slower rate of pour less vibration and warm temperature
26
Hydrostatic pressure in forms is influenced most by what factors
Water/cement ratio (slump) height of pour, vibration and ambient temperature
27
Define rate of pour
The rate (speed) at which concrete is placed in forms influenced most
28
Concrete footing width and depth is based upon what primary conditions
Total weight of building and soil conditions
29
Define the term spandrel beam
Concrete beam at exterior of building resting on columns
30
What is the primary function of a spilt ring connector
Wood-wood connection : transfer load from one member to the next
31
How does a shear plate differ from a split ring connector
Sheer is taken on by bolts rather than the member itself
32
What is the maximum vertical rise for one lift in a step footing
600mm
33
Define a stile
Vertical member in a raised panel doors or wall treatments
34
Define a rail
Horizontal member in a raised panel door or wall treatments
35
Define a muntin
Decorative grid patterned bars on windows
36
Describe nailing pattern for plywood subfloor
150 edges 300 on the field
37
What is the most common cause for squeaky floors
Lumber shrinkage around fasteners (nails)
38
Ceiling joists placed on top of walls that are framed with a single top plate must be within what distance of a stud
50mm
39
What is a party walls
Sound/ fire separation between 2 dwelling units
40
What is the minimum air space that is required between brick vaneer and wall sheathing
25mm
41
Building paper when applied to walls must have what minimum lap?
100mm
42
Interior load bearing walls supporting a second floor must be within what distance of a support
600mm
43
If common rafters are 38x140 the hip and valley rafters must be what size
50mm greater than commons
44
What is the maximum length for collar ties before they need to have a cross tie to
2.4
45
Suspended ceiling crossties are inserted into the main tees on what side of the slot
Left side
46
What is the recommended size for suspended ceiling border tiles
Greater than 1/2 tile dimensions
47
What is the minimum that flashing must extend up under wall sheathing paper
50mm
48
What is the minimum that eave protection must extend in beyond the wall
300mm
49
Eave projection may be eliminated if the overhang is over what measurement
Greater then 900mm
50
What is the minimum width of a residential stair
860mm
51
What is the maximum moisture content for framing lumber
19%
52
What type of concrete should be used in alkaline soils
Type50
53
What is the primary purpose of crossbracing of shoring
To increase lateral stability
54
What is the recommended splice for rebar expressed in bar diameter?
24 times diameter for walls/slabs 20 times diameter for columns
55
Rebar is used to increase the strength of concrete and resist what force
Tension
56
temperature bar is used and at what location are they placed?
To resist cracking and near the top of the slab
57
What is the purpose of underpinning?
Extend foundation to new lower section
58
What condition must soil be prior to casting footings?
Undisturbed and not frozen
59
What is the minimum depth for a foundation?
1.2 m in clay soils
60
What is the minimum thickness of a footing by code?
100 mm
61
What is the minimum thickness of a foundation wall by code?
150 mm
62
What type of nails are required when sheeting a preserved wood foundation
Corrosion resistant
63
What is used to support basement floor joist in a wood foundation?
Pressure treated sleepers
64
What is a gullet?
Spacing between saw teeth
65
What are the top, side and bottom clearances for interior doors?
2 mm top and sides 19 to 25 mm at bottom
66
How does the cold air return to the furnace in a residential house?
Through cold air returns
67
What is the minimum fire rating of a door?
20 minutes
68
How do you identify a fire rated door?
Label
69
Which way does a fire rated door swing?
Direction of egress
70
How are metal door jam secured in a masonry wall?
Metal clips embedded in mortar
71
What is the minimum width of a door to the first bathroom in a dwelling unit?
760 mm
72
Does a bathroom require a window and can a bathroom have a cold air return
The answer is no for both of them
73
What is the correct first response if you find a worker that is unconscious
Check for hazards
74
What purpose does a mud sillserve when it is placed under adjustable shoring
Ask as a footing to distribute load over a larger area
75
Define the term astragal can it be used to reduce sound penetration?
Moulding or plate that cover gap between double doors
76
What is an open cornice?
No soffit visible rafter tails
77
What is a closed cornice
Soffit on underside over rafter tails
78
What is a reglet
a groove made in concrete or masonry to receive flashing
79
Define hydrostatic pressure
Water pressure within soil
80
What kind of column forms are subject to torsion and what is done to counteract as force?
Square columns braced in two directions
81
What is the maximum width of a stair without riser material
Private 900 mm public not allowed
82
What is required at the inside corner of a winder stair?
Newell post or wall
83
What type of joint is used at the inside corner of bevel wood siding
Butt to vertical strip and caulk
84
What must be used where metal siding butts up against a masonry chimney?
Caulking
85
What should you set a mitre gauge to make a cut of 60° on a table so
30°
86
How are fire doors hinged?
Swing in direction of egress
87
At what point does an excavation become a trench?
When the depth is greater than the width
88
How does architectural concrete differ from structural concrete?
Architectural – visible and must have good finish Structural – more focus on strength
89
What is the difference between a datum point and a benchmark?
Datum– officially register registered Benchmark – job site reference
90
What type of joint is between a transom panel and an active door?
Rabbet
91
What is the maximum projection of masonry units past their support
25 mm
92
Why do you require more bracing on formwork that has only one form
No ties to equalize the pressure on two sides
93
What is a light duty scaffold?
122 kg/m² max load
94
What is a heavy duty scaffold?
376 kg/m² max load
95
Explain curtain walls
Non-loadbearing exterior walls
96
The spacing for butt joints in hardboard siding is
Minimum 5 mm OSB 3 mm Plywood 2 mm
97
What are the two grooves under a window for?
To prevent water penetration
98
What is the side lap of wood shakes?
40mm (6 to 9 mm space between them)
99
Hooks on a sling for lifting are always orientated
Outward
100
Maximum aggregate is 3/4 the distance between rebar and form true or false?
True Max 1/3 slab thickness Max 1/5 wall width
101
To bring the cornice of an unequal slope to the same level as main roof cornice one would do what
Raise minor roof wall height

4th Year (6 decks)

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