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Red Seal Carpentry > Refresher test #2 > Flashcards

Refresher test #2 Flashcards

1
Q

How many workers must be at a Josie before a first aid kit is required?

A

One or more

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2
Q

When removing trench shooting, the uprights are pulled out

A

After backfilling has been completed

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3
Q

OSHA requires employers to provide ladders, steps, ramps, or other safe means of egress for workers working in trench excavations _________or deeper

A

4 feet (1.22 meters)

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4
Q

The width of a bench directly above any particular rise shall not be less than ______ times the height of that rise

A

1.5 times
Ex: rise is 4’, the width of the next landing should be at least 6’

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5
Q

Scaffolds are required when demolition work is more than _____ above the floor or grade

A

3M
10’

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6
Q

Trench shoring consisting of uprights, stringers, and struts is known as

A

Skeleton shoring

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7
Q

The structure of the occupational safety and health committee is outlined in the

A

Industrial Health and Safety Regulations

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8
Q

What is the correct slope ratio for trenches

A

3:4

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9
Q

Prior to getting permission to start building in a New Subdivision, the owner of the subdivision must apply for and receive a

A

Development permit

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10
Q

Contractors who want to demolish a building must have a demolition permit to

A

Prevent a heritage building from being demolished

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11
Q

Who is permitted to apply for a gas permit
A: landlord
B: general contractor
c: tenant
D: plumbing or gas contractor

A

D: plumbing or gas contractor

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12
Q

A concrete-form inspection is required when?
And why?

A

Before the concrete is placed
To check the bearing conditions of the ground
To see if the form work is too close to the property line

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13
Q

Framing inspections are required before or after all electrical and plumbing is roughed in

A

After

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14
Q

When gas service lines are inspected, they are subjected to a

A

Pressure test

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15
Q

Who makes the final inspection of a building

A

Building inspector

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16
Q

Hire many sets of plans (blueprints) are required to get a building permit for commercial construction?

A

Six

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17
Q

What is the earliest stage of construction the surveyors will conduct a survey, for purposes of Surveyors certificate showing the location of the building on the lot

A

After wall forms are erected

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18
Q

On new construction, the first inspection by the builder is required prior to

A

Placing concrete in concrete forms

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19
Q

Prior to applying insulation and Vapor barrier, you will require approval from who

A

The electrical inspector

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20
Q

The purpose of a water-and a sewer-connection permit is to allow city hall to register the

A

Date to start charging for those services

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21
Q

A solid fuel burning appliance (wood stove) will require an inspection by the

A

Building inspector

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22
Q

If you wish to start construction before architectural drawings are completed, you can do so if you acquire

A

Development permit

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23
Q

Prior to allowing people to move into a new house, the contractor out home owners must apply for and be awarded

A

An occupancy permit

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24
Q

Lag bolts have a threaded portion that is similar to

A

Similar to a wood screw

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25
Q

When using polysulphide-base caulking, operators are required to wear

A

Gas tight goggles and gloves in well ventilated areas
Is a hardcore caulking
Used for concrete
Can cause kidney failure

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26
Q

Major categories of caulk?

A

Silicone: bathrooms, hydrophobic, does not like water, not good on the exterior, can’t paint over it

Butyl-rubber caulk is a specialty caulk for outdoor use only. It is the best exterior caulk for roofing construction and repairs, since it can withstand extreme temperatures and creates a strong, insulating and water-tight seal.

Exterior would be polyurethane because it good with uv, is water resistant, still not good with paint, try to colour match

For expansion joints, polysulphide, a5 gallon pail

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27
Q

What are the three categories of sealant

A

can be categorised broadly as
resin-based sealants,
glass ionomer sealants and
hybrid sealants

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28
Q

What do you do for an expansion joint

A

Put backer Rod and polysulphide

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29
Q

What is concrete composed of

A

Cement, water and aggregates
Cement is the magical ingredient in concrete

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30
Q

The maximum size of the aggregates should be _____ of the width of the unreinforced wall member

A

One fifth
Need to vary aggregate sizes
Water cement ratio

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31
Q

If there is too much water in a concrete mixture, the concrete will be weak, you can compensate by adding ______

A

A plasticizer

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32
Q

A lot water-cement ratio in concrete will make

A

Strong concrete

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33
Q

How would you check the consistancy of a concrete mixture before you pour

A

Do a slump test

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34
Q

What is a slump test

A

Fill a cone (8” bottom, 4” top, one foot high) with concrete then pull it off
The distance from the top of the cone to the top of the resulting pile is the slump

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35
Q

When microscopic air bubbles are placed in concrete, the process is called

A

Air entrainment

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36
Q

An air entraining agent should not be specified or used for concrete to be given a smooth, dense, hard-troweled finish because _____________

A

blistering or delamination may occur

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37
Q

When pouring concrete in the winter an ___________ may need to be added

A

An excellerator
Makes things happen faster

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38
Q

Concrete defect
Too much water causes

A

Dusting

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39
Q

Concrete defect
Under or over consolidation (vibrating) causes

A

Honeycombing
Tiny holes everywhere

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40
Q

Concrete should be poured at a rate of _______

A

3-4 feet per hour

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41
Q

The mass of one cubic meter is approximately

A

2400 kg
2.4 kg/m3

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42
Q

Drill a hole off about 75mm diameter in a concrete wall, the best combination to use would be a

A

Rotary hammer with a core bit

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43
Q

Safety harness
Need to be rated at

A

5000lbs

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44
Q

Safety harness
Rope has to be rated

A

6000lbs
More than a harness which is 5000lbs because you lose strength when you tie it

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45
Q

Safety restraint is rated at

A

800lbs

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46
Q

The fixed reticle on an optical level is also known as the

A

Crosshairs

47
Q

When levelling an optical levelling instrument, the bubble moves in the direction of the

A

Left thumb when turning the levelling screw

48
Q

At what height does scaffolding require a guardrail

A

3000mm
10’

49
Q

How to set up a tripod on a hill

A

One leg at the top, two legs down

50
Q

How to check a builders roof for plumb

A

Make circles or move it back and forth
The lowest measurement is plumb

51
Q

Minimum width of a wooden scaffold plank

A

10”
Should be 20” or two 2x10 doubled up

52
Q

How often do you tie off a scaffold

A

1st row is 3x the base
After that tie off every 20’
20’ up vertical
21’ horizontal

53
Q

What is the maximum height of a free standing scaffold

A

Three times it’s minimum base dimension

54
Q

Rung spacing for a Jobsite ladder

A

12” o/c

55
Q

Job-built ladders must have a minimum distance between the side rails no less than

A

15 inches

56
Q

The members that incorporate stability into tube and clamp scaffold are

A

Face, sway, internal braces

57
Q

The safety factor for ropes used to support a worker is

A

10

58
Q

A right lay fibre route should be cooled

A

Clockwise

59
Q

To fasten two large diameter ropes together, use what kind of knot

A

Carrick bend

60
Q

The double basket hitch should be set so that the angle to the Hirixontsl is never less than

A

60 degrees
Equilateral triangle

61
Q

Crane hand signal
Thumbs up or down

A

Raise/lower the boom

62
Q

When building batter boards, why are horizontals nailed onto the outside of the verticals, away from the excavation

A

The pull of the line holds the members together

63
Q

If the soil at the site is very soft and crumbling, what effect does this have on the placement of the batter boards

A

They are moved further from the excavation

64
Q

If the string lines are to be in place for extended periods, they should be checked

A

At least once a day

65
Q

The main purpose of batter boards is to help

A

Position the building on the lot

66
Q

If height is a problem when setting batter boards, the lowest you can set them is to clear the

A

Footings

67
Q

What are the three main objectives in concrete formwork construction

A

Quality, strength and safety

68
Q

What is the name for the system of structural supports and bracing required for the support of temporary loads during construction

A

Falsework

69
Q

If any changes to a tilt up panel occur, what must be done

A

Changes are authorized by a registered engineer

70
Q

Lumber for concrete formwork should be
A: very dry
B: Very wet
C: partially seasoned
D: green or fresh-cut

A

C: partially seasoned

71
Q

What are disconnecting ties used for

A

Very thick or heavy castings

Two common types of internally disconnecting form ties are the coil tie and the she-bolt tie. Both have reusable end bolts that unscrew from the inner tie rod member, which stays in the concrete.

72
Q

For light or low forming, wood braces are attached to

A

Stakes
Although turnbuckles are better

73
Q

What is cast into a concrete wall to secure counter flashing

A

Reglets

74
Q

What is done to tall forms to guard against their failure

A

Place tires and wallets close together near the bottom

75
Q

Concrete forming
What aspect of a form wall has the most impact on the pressure

A

The height of the wall

76
Q

Which of the following may be used to create a textured face on a concrete wall
A: Rustication strips
B: Edge forms
C: Screeds
D: Overlaid plywood

A

A: rustication strips
3 reasons
A: decoration
B: to hide a pour height seam
C: control joint

77
Q

What is the purpose of a keyway

A

It prevents lateral or vertical movement between sections

78
Q

In the welded wire mesh description “254x254 x P13/p13” what does P13 mean

A

Area of the cross section of the wire
Mesh for slab on grade

79
Q

Which kind of reglet needs no caulking

A

Cast-in- place

80
Q

When all the components of a cast in place structure are placed at the same time, the placement is described as

A

Monolithic

81
Q

Bulkheads, blockouts, and door and windows bucks are all installed in wall forms

A

Before all the ties are in place

82
Q

The correct time to align the tips of any wall forming system is

A

Once one side is complete

83
Q

What is a spandrel beam

A

The beam at the outer edge of the slab

84
Q

How is the precise column-form height usually obtained

A

Built slightly short then shimmed up

85
Q

Which slab uses drop panels and capitals

A

Flat-slab

86
Q

What is the difference between flat slab and flat plate

A

Simple
Flat plate doesn’t have protrusions at the bottom

Long answer

The flat plate is a two-way reinforced concrete framing system utilizing a slab of uniform thickness, the simplest of structural shapes.
The flat slab is a two-way reinforced structural system that includes either drop panels or column capitals at columns to resist heavier loads and thus permit longer spans

87
Q

What is a waffle slab

A

A waffle slab, also known as a two-way joist slab or ribbed slab, consists of a grid of deep beams or joists intersecting at regular intervals, creating a waffle-like pattern. The beams or joists are supported by columns, and the spaces between them are filled with a relatively thin concrete slab. This design creates a system of ribs that enhance the slab’s stiffness and load-carrying capacity.

88
Q

What distinguishes a rubber slab from a waffle slab

A

Waffle slabs are stronger

89
Q

Vertical shores must be secured at their top and bottom to

A

Prevent their accidental displacement

90
Q

Where would you find specifications for centre to centre locations of machine based anchor bolts

A

On approved shop drawings

91
Q

When anchor bolt ties are used to prevent the bolts from withdrawing, where should the ties be placed

A

Just above the bend in the bolts

92
Q

Stairs often have metal plates embedded at regular intervals to

A

Secure metal railings

93
Q

Which of the following is a very important aspect of placing formwork for dock levellers

A

Ensure that forms do not float

94
Q

To ensure a good connection between concrete and deformed dowels, the fields should be embedded into each concrete section a distance of at least

A

30 bar diameters

95
Q

Name the part of a concrete stair forms that supports the underside of the stair while the concrete is placed

A

Soffit

96
Q

To ease form stripping for precast concrete stairs you would

A

Oil and/or taper the forms before placing the concrete

97
Q

What is the definition of run

A

The total horizontal distance covered by the stair or the distance from riser to riser

98
Q

Total rise is 4455mm, unit rise is 165mm. What is the highest riser at which the landing can be placed

A

22

99
Q

The vibrator should be inserted into the concrete vertically at intervals equal to the radius of action multiplied by

A

1.5

100
Q

In hot weather, extra water is sometimes added to concrete mix. The effect on the finished product is

A

Lower ultimate strength

101
Q

Deflecting concrete against rebar or baffles during placement can cause

A

Segregation

102
Q

High early strength concrete can be obtained using

A

Type 30 cement

103
Q

The greatest strength gain in normal concrete is within the first three days

A
104
Q

What kind of forms are most commonly used in tilt up construction

A

Wood

105
Q

What is between stairwells and fly forms

A

Filler panels

106
Q

Why are bracing and anchoring so important when installing ganged or giant forms

A

The panels are often exposed to wind loading

107
Q

Slip forms are usually battered up to

A

4mm in 1200mm

108
Q

To avoid fins of concrete at joints in wood mould, what is usually done

A

Openings are taped or filled

109
Q

When should forms be cleaned and oiled

A

Just after they are stripped

110
Q

When a monolithic suspended slab with columns and beams is ready for firm removal, which component is stripped after the beam bottoms

A

Column forms

111
Q

Why is it a good idea to leave a few wall ties in place until forms are loosened from the concrete

A

Keeps the forms from breaking loose accidentally

112
Q

What procedure should you follow to dismantle concrete formwork

A

Remove shores in accordance with engineers design plans

113
Q

Reshores under flat slabs should be placed so that they are

A

Directly below loading points imposed on the slab

Red Seal Carpentry (5 decks)

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