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(c-51) Structural Steel > Test 3 > Flashcards

Test 3 Flashcards

1
Q

The ground cable on a welding machine is used for:

A. completing the welding circuit

B. safety–if the welding machine falls off a building the cable keeps it from hitting the ground

C. to decrease amplitude of the welding circuit

D. to decrease voltage of the welding circuit

A

A. completing the welding circuit

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2
Q

What is the safest way to unload steel from a truck?

A. piece by piece

B. whole bundle

C. dump truck

D. transporter

A

B. whole bundle

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3
Q

When lifting a long member with two cranes but no spreader bar, where should the hooks be placed?

A. one hook at each end

B. both hooks in the middle

C. one hook in the middle and one hook at the end

D. a long member should never be lifted with just two cranes

A

C. one hook in the middle and one hook at the end

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4
Q

Sheaves and blocks should be used:

A. for any diameter wire rope

B. only for the diameter wire rope for which block and sheaves are grooved

C. only for a wire rope smaller than that for which blocks and sheaves are grooved

D. only when authorized by a building official

A

B. only for the diameter wire rope for which block and sheaves are grooved

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5
Q

Are runoff tabs removed by the fabricator or erector?

A. always

B. sometimes

C. no, unless otherwise specified

D. never

A

C. no, unless otherwise specified

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6
Q

What does AISC stand for?

A. American Institute of Steel
Construction

B. American Institute of Steel Contractors

C. American Institute of Steel of
California

D. American Industrial Steel Council

A

A. American Institute of Steel
Construction

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7
Q

Where an outer face of bolted parts has a
relative to a slope greater than _________ plane perpendicular to the bolt’s axis, a beveled washer must be used to compensate for the lack of parallel.

A. 1:10

B. 1:20

C. 1:30

D. 1:40

A

B. 1:20

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8
Q

On a set of plans there appears a symbol with a circle and a horizontal line through the middle, on top of the line is the number 7 and on the bottom is the number 35 what does this symbol mean?

A. Sheet 5, Detail 7

B. Sheet 7, Detail 35

C. Sheet 7, Detail 5

D. Detail 7, Sheet 3

A

B. Sheet 7, Detail 35

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9
Q

For bolts 7/8” and less in diameter, oversize holes may have nominal diameters up to ________ larger than the bolt.

A. 1/32”

B. 3/16”

C. 1/4”

D. 5/16”

A

B. 3/16”

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10
Q

For bolts 1” in diameter, oversize holes may have nominal diameters up _________ to larger than the bolt.

A. 1/32”

B. 3/16”

C. 1/4”

D. 5/16”

A

C. 1/4”

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11
Q

For bolts 1-1/8” and greater in diameter, oversize holes may have nominal diameters up to _________ larger than the bolt.

A. 1/32”

B. 3/16”

C. 1/4”

D. 5/16”

A

D. 5/16”

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12
Q

If the temperature of a steel member increases, the steel member would:

A. increase in size

B. decrease in size

C. remain the same size

D. increase and decrease

A

A. increase in size

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13
Q

Which of the following is not included in a structural steel contract?

A. lump sum

B. cost per pound

C. cost per floor

D. cost per item

A

C. cost per floor

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14
Q

Who is responsible for safety on a construction jobsite?

A. general contractor

B. Cal/OSHA inspector

C. subcontractor

D. Contractors State License Board

A

C. subcontractor

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15
Q

The abbreviation for metal-inert-gas or gas metal-arc welding is:

A. TIG

B. MIG

C. SMA

D. SMG

A

B. MIG

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16
Q

A fire extinguisher rated at least ___________ must be kept readily accessible to the crane operator’s station.

A. 2: BC

B. 7: BC

C. 8: BC

D. 10 : BC

A

D. 10 : BC

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17
Q

If material received from the mill does not satisfy ASTM A6 tolerances, who typically performs the corrective work?

A. the material must always be returned to the mill

B. the fabricator may perform mechanical or heat straightening

C. the steel erector must perform any needed corrections on site

D. no one: The steel is defective and must be destroyed

A

B. the fabricator may perform mechanical or heat straightening

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18
Q

What is the name of a truss that consists of a curved or arched upper chord and a horizontal lower chord, connected by diagonal web members?

A. Bowstring truss

B. Scissors truss

C. Vierendeel truss

D. Wichert truss

A

A. Bowstring truss

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19
Q

What is the name of a truss that consists of rigid rectangular or square panels connected by vertical and horizontal members, without diagonal bracing. Unlike traditional trusses?

A. Bowstring truss

B. Scissors truss

C. Vierendeel truss

D. Wichert truss

A

C. Vierendeel truss

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20
Q

What is the name of a truss that features two intersecting sloping members that cross each other and connect at the center, forming a “V” or “X” shape?

A. Bowstring truss

B. Scissors truss

C. Vierendeel truss

D. Wichert truss

A

B. Scissors truss

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21
Q

What is the name of a truss that consists of a series of diagonal members that intersect to form triangular shapes, providing strength and stability to a structure?

A. Bowstring truss

B. Scissors truss

C. Vierendeel truss

D. Wichert truss

A

D. Wichert truss

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22
Q

After the owner (or owner’s agent)
completes “released-for-construction” plans and specifications, they are sent to the ___________ for ordering mill material and for the preparation and completion of shop and erection drawings.

A. designer

B. fabricator

C. general contractor

D. steel erector

A

B. fabricator

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23
Q

After shop drawings are made by the fabricator, they are submitted to the _________________ for examination and approval within 14 days.

A. designer

B. owner (or owner’s agent)

C. general contractor

D. steel erector

A

B. owner (or owner’s agent)

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24
Q

The fabricator is released to start fabrication when the fabricator:

A. receives “released-for-construction” plans and specs

B. determines the most efficient time to begin work

C. receives shop drawings approved by the owner

D. receives a scheduling notice from the steel mill

A

C. receives shop drawings approved by the owner

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25
Q

Who is responsible for accuracy of detail dimensions on shop drawings and the general fit-up of parts to be assembled in the field?

A. steel erector

B. owner–after the owner accepts shop drawings

C. structural engineer–at all times

D. fabricator

A

D. fabricator

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26
Q

If the owner furnishes the shop drawings for a job, who is responsible for the completeness and accuracy of the drawings?

A. fabricator–after signing for them

B. engineer–after signing for them

C. owner

D. steel erector

A

C. owner

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27
Q

Cutting or shearing to length, planing and grinding, and drilling, punching, or reaming bolt or rivet holes in steel is generally done by the:

A. general contractor

B. steel mill

C. fabricator

D. steel erector

A

C. fabricator

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28
Q

Who is responsible for providing and maintaining access roads into and through a jobsite?

A. field engineer

B. job superintendent

C. general contractor

D. California Highway Patrol

A

C. general contractor

Technically, roadways are the responsibility of the owner. However, the general contractor acts as the agent of the owner. If the State makes you choose between, “owner” and “general contractor,” the better choice is “owner.”

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29
Q

If there is a difference between plans and specifications for buildings, which of the following takes precedence?

A. specifications

B. figures

C. plans

D. none of the above

A

A. specifications

Normally, the specifications take precedence. For bridges, the plans take precedence. If there is a conflict between scale dimensions and figures, the figures govern. If there is a conflict between structural-steel plans and those of other trades, the structural-steel plans govern

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30
Q

A plan reads “3 in. UON” regarding the fill underneath the concrete decking.
What does the “UON” stand for?

A. “unless otherwise noted”

B. “under (an) oblique notch”

C. U-bolt on needle (beam)”

D. “undercut on nebule”

A

A. “unless otherwise noted”

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31
Q

Common bolt and nut operations are:

A. screw bolt and hold nut still

B. screw nut and hold bolt still

C. screw bolt and nut at the same time

D. none of the above

A

B. screw nut and hold bolt still

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32
Q

The maximum slenderness ratio (= L/R) of a column is:

A. 200

B. 240

C. 300

D. 360

A

A. 200

A column’s slenderness ratio is defined as it’s effective height or length (*L”) divided by it’s radius of gyration (“R»). Effective length is determined by multiplying the column’s unbraced length by its effective length factor (usually found in a table or a chart). For rectangular columns, “R” may be taken as 30% of the overall dimension in the direction in which stability is being considered, and for circular columns as 25% of the diameter. The slenderness ratio may not exceed 200, except during construction when a value of 300 is allowed.

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33
Q

Seated-beam connections:

A. rest on concrete

B. rest on dirt

C. are suspended on a seat angle

D. use a single plate without a top plate angle

A

C. are suspended on a seat angle

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34
Q

Which is the most dangerous when welding in a small space?

A. fatigue

B. lack of ventilation

C. build up of heat

D. burns

A

B. lack of ventilation

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35
Q

What is a tapered steel girder?

A. wide in center and narrow at supporting ends

B. wide at supporting ends and narrow in
center

C. both of the above

D. none of the above

A

A. wide in center and narrow at supporting ends

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36
Q

ASTM A502 refers to:

A. bolts

B. rivets

C. steel beams

D. steel girders

A

B. rivets

ASTM A502 Steel Structural Rivets come in three grades with diameters ranging from 0.5” to 1.5”.
Grade 1: Carbon steel for general purpose
Grade 2: Carbon-manganese steel for higher strength
Grade 3: Similar to Grade 2, but with better resistance to corrosion.

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37
Q

ASTM A501 refers to:

A bolts

B. rivets

C. steel beams

D. steel pipe columns

A

D. steel pipe columns

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38
Q

Where do you use a split-end anchor?

A. solid rock

B. prestressed concrete

C. securely-anchored wood

D. tamped earth

A

A. solid rock

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39
Q

What does the term “Jumping Derrick” mean?

A. move derrick to a higher tier

B. move derrick to other place on same level

C. increase jib length

D. none of the above

A

A. move derrick to a higher tier

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40
Q

Sections of metal roofing are usually referred to as:

A. pans

B. panels

C. sheets

D. plates

A

A. pans

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41
Q

The best roofing method for metal roofs with a slight pitch is:

A. flat seam

B. batten seam

C. standing seam

D. horizontal seam

A

A. flat seam

42
Q

When installing a flat seam roof, the seams may be sealed with a sealant except where the slope is less than _______, in which case the seams must be soldered.

A. 1:12

B. 2:12

C. 3:12

D. 4:12

A

C. 3:12

43
Q

Flat seam roofs of slight pitch should be divided by expansion battens into sections not exceeding ________ square.

A. 20 ft

B. 25 ft

C. 30 ft

D. 40 ft

A

C. 30 ft

44
Q

Before installing a flat seam roof, a wood deck should be covered with _____ Ib felt.

A. 15

B. 30

C. 45

D. 60

A

B. 30

45
Q

What is the minimum gage copper recommended for flat seam roofs?

A. 12 oz

B. 16 oz

C. 24 oz

D. 36 oz

A

B. 16 oz

46
Q

Batten seam roofs are not recommended for roofs having a slope less than:

A. 3:12

B.4:12

C. 5:12

D. 6:12

A

A. 3:12

47
Q

Which of the following metals will expand the most?

A. copper

B. stainless steel

C. aluminum

D. galvanized steel

A

C. aluminum

48
Q

Which of the following metals will expand the most?

A. copper

B. galvanized stainless steel

C. zinc

D. stainless steel

A

C. zinc

49
Q

0.020* thick aluminum is approximately what gage?

A. 26 gage

B. 24 gage

C. 14 gage

D. 22 gage

A

B. 24 gage

50
Q

0.020* thick copper approximately equals:

A. 26 gage, B&S

B. 24 gage, B&S

C. 21 gage, B&S

D. 20 gage, B&S

A

B. 24 gage, B&S

51
Q

Which is the lowest on the galvanic scale?

A. lead

B. steel

C. copper

D tin

A

B. steel

52
Q

Which has the least rigidity?

A. 16 oz soft copper

B. 16 oz cold rolled copper

C. 20 oz soft copper

D. 20 oz cold rolled copper

A

A. 16 oz soft copper

53
Q

When joining 22 oz copper sheets, which procedure would produce the strongest joint?

A. sheets are soldered, riveted, and welded

B. sheets are lapped and welded

C. sheets are lapped and soldered

D. sheets are lapped, riveted, and soldered

A

D. sheets are lapped, riveted, and soldered

54
Q

A 10’ length of stainless steel will expand _______ with a temperature increase of 100°F

A. 1/16”

B. 1/8”

C. 1/4”

D. 1/64”

A

B. 1/8”

55
Q

Sheet copper is over ______ wide.

A. 12”

B. 24”

C. 36”

D. 48”

A

B. 24”

56
Q

How much will copper expand in 10’ over a 100° F temperature change?

A. 1/16”

B. 1/12

C. 1/8”

D. 1/4”

A

C. 1/8”

57
Q

Which is the most common method of fastening copper to a substrate?

A. nailing

B. screwing

C. sealant

D. cleating

A

D. cleating

58
Q

Brackets used to support gutters should be installed on 3’ centers and secured by _____ fasteners.

A. 1

B. 2

C. 3

D. 4

A

B. 2

59
Q

The maximum permitted length of a gutter is _____ between ends or expansion joints.

A. 10’

B. 25’

C. 40’

D. 50’

A

D. 50’

60
Q

Joints in gutters should be lapped 1” riveted on _______ centers, and soldered.

A. 13”

B. 2”

C. 3”

D. 4”

A

B. 2”

61
Q

The plan area of a building is 2,600 sq ft
of roofing with a design factor of 1.10.
The downspout for the gutter will drain
200 sq ft of roof area per 1 sq in of downspout area. What drain should be the area for the downspout?

A. 10.7 sq in

B. 12.7 sq in

C. 13.6 sq in

D. 14.3 sq in

A

D. 14.3 sq in

Design area =
2,600 sq ft x 1.10 = 2,860 sq ft.
2,860 sq ft ÷ 200 sq ft/sq in = 14.3 sq
in

62
Q

You are installing a galvanized steel roof and the plans call for a built-in gutter.
Which metal should you use for the gutter?

A. aluminum

B. stainless steel

C. copper

D. prefinished metal

A

B. stainless steel

63
Q

When designing a rectangular gutter, the minimum ratio of depth to width should
be:

A. 2 to 3

B. 3 to 4

C 4 to 4

D. 7 to 1

A

B. 3 to 4

64
Q

To protect the edge of the building and metal roof from rain and wind, you should install a:

A. cap flashing

B. perimeter flashing

C. base flashing.

D. counter flashing

A

B. perimeter flashing

65
Q

What should be the minimum gage of galvanized steel valley flashing?

A. 20 gage

B. 24 gage

C. 26 gage

D. 28 gage

A

C. 26 gage

66
Q

How many fasteners per cleat are required when using expansion cleats for standing seam metal roofs with continuous pans over 30’ in length?

A. 2

B. 3

C. 4

D. 6

A

A. 2

67
Q

Rigid insulation is to be applied over a wood roof deck. A metal or wood grid system must be installed if the rigid insulation is:

A. 1/2” to 1” thick

B. 3/4” to 1” thick

C. 1” to 1-1/2” thick

D. 1-1/2” thick or greater

A

D. 1-1/2” thick or greater

68
Q

At what slope does a roof become a high-pitched roof?

A. over 3:12

B. over 4:12

C. over 6:12

D. over 8:12

A

C. over 6:12

69
Q

A roof is considered to be low-pitched when its slope is:

A. 3:12 or less

B. 3:12 through 6:12

C. over 6:12

D. over 8:12

A

A. 3:12 or less

70
Q

A roof with a slope of 8:12 is considered:

A. 1/4 pitch

B. 1/2 pitch

C. 3/8 pitch

D. 1/3 pitch

A

D. 1/3 pitch

To convert from slope to pitch, express the slope as a fraction of inches of rise to 24” of run and then
simplify the fraction: 8/24 = 1/3.

71
Q

Your crew is on the roof welding with materials containing beryllium and there is a strong wind. According to Cal/OSHA, what must you do?

A. nothing

B. provide fans

C. require crew to wear supplied air respirators

D. provide wind deflector

A

C. require crew to wear supplied air respirators

Respirators for beryllium must be the supplied air type (SCBA). In open air, as well as enclosed spaces, respirators must be used for beryllium, cadmium, lead, mercury, chromium, fluorides, zinc and stainless steel. In an open space where there is an adequate wind (and therefore good ventilation), respirators are still required for beryllium, cadmium, lead, and mercury, but not the rest.

72
Q

What thickness of zinc coating is placed on steel sheets to create galvanized sheets?

A. 0.75 oz/sq ft

B. 1.25 oz/sq ft

C. 1.50 oz/sq ft

D. 2.00 oz/sq ft

A

B. 1.25 oz/sq ft

73
Q

What type of flux is used to solder copper?

A. acid

B. cut acid

C. tallow

D. water-white rosin

A

B. cut acid

Cut acid is zinc chloride.

74
Q

Which solder is best for copper?

A. 50/50 tin-lead

B. 80/20 tin- lead

C. 60/40 tin-lead

D. 70/30 tin-lead

A

A. 50/50 tin-lead

75
Q

Acid flux residue can be removed with what liquid?

A. chlorine

B. hydrogen peroxide

C. distilled water

D. 5-10% solution of washing soda

A

D. 5-10% solution of washing soda

You can neutralize acid flux residue with ammonia or baking soda and rinsing with water.

76
Q

When it is necessary to install dissimilar metals, you can place sheet lead or building paper between the metals or paint with:

A. latex paint

B. asphaltum paint

C. alkyd paint

D. gloss paint

A

B. asphaltum paint

77
Q

What is the most important consideration when welding with oxygen?

A. remove all oils and greases from and near oxygen cylinder

B. make sure the tank is in good repair

C. oxygen flow is steady

D. materials to be welded must be at room temperature

A

A. remove all oils and greases from and near oxygen cylinder

78
Q

Snow guards are used to:

A. keep snow off roof

B. prevent snow from sliding off roofs

C. keep snow from freezing on the roof

D. keep snow from melting on the roof

A

B. prevent snow from sliding off roofs

79
Q

What is the advantage of power pan forming equipment?

A. ability to produce roofing pans in continuous lengths

B. can form the pans and install

C. strengthen the metal while forming the pans

D. ease the creation of seams

A

A. ability to produce roofing pans in continuous lengths

80
Q

When fastening sheet copper to prevent wind uplift, you drill a hole that is 1/2” in diameter larger than the screw to allow for thermal expansion. Then you install the screw with a 3/4” washer. You have proceeded:

A. correctly

B. incorrectly you should install a 1-1/4” washer

C. incorrectly you should install a 1-1/2” washer

D. incorrectly the hole should be only
1/4” larger in diameter

A

B. incorrectly you should install a 1-1/4” washer

81
Q

Which of the following does NIOSH do?

A. publishes safety information

B. researches chemical hazard data

C. approves respirators

D. all of the above

A

D. all of the above

82
Q

Can a metal roofing system be installed over a steel deck?

A. yes, but a minimum of 20 gage steel should be used

B. yes, if a minimum of 22 gage steel is used

C. depends on the size of the deck

D. no

A

B. yes, if a minimum of 22 gage steel is used

83
Q

How do you adjust a frame plumb?

A. with wire rope

B. with turnbuckles

C. with wire rope and turnbuckles

D. none of the above

A

C. with wire rope and turnbuckles

84
Q

Where do you start installing an aluminum batten seam roof with a 6:12 pitch?

A. at the ridge

B. at the eaves

C. at the top of the peak

D. at a gable

A

B. at the eaves

85
Q

A contractor installed a 20” high parapet wall on a roof 26’ above grade. The contractor proceeded:

A. correctly

B. incorrectly, 24” tall parapet walls are needed

C. incorrectly, roofs higher than 20’ requires 36” parapets

D. incorrectly, 30” tall parapet walls are needed

A

D. incorrectly, 30” tall parapet walls are needed

30” is the minimum height for parapet walls.

86
Q

What is the most likely to happen if a downspout gets clogged with leaves and debris and rain water freezes inside?

A. the ice will melt and wash the debris away

B. the downspout will separate from the gutter

C. the downspout will split open at the seams

D. the ice will slip down and push the debris out the bottom

A

C. the downspout will split open at the seams

87
Q

When sizing rivet holes you should:

A. have a 1/16” oversize based on the nominal size of the rivet

B. have a 1/32” oversize based on the nominal size of the rivet

C. have a 1/8” oversized based on the nominal size of the rivet

D. none of the above

A

A. have a 1/16” oversize based on the nominal size of the rivet

88
Q

The oversize in rivet sizing:

A. allows for easier assembly

B. compensates for typical errors in dimensions of steel members and hole positioning

C. both A & B

D. none of the above

A

C. both A & B

89
Q

Which of the following describes the term
“float”?

A. a small logo designed to identify the manufacturer

B. in steel erection, a float is a type of suspended platform used by bolters and riveters

C. a way to waterproof a roof

D. none of the above

A

B. in steel erection, a float is a type of suspended platform used by bolters and riveters

90
Q

Which of the following describes OSHA’s role in welding:

A. provides guidelines and warnings about welding safety

B. provides information on toxic, heavy metal fumes

C. provides information on fumes and vapors that result from welding and cutting operations on galvanized and alloyed metals

D. all of the above

A

D. all of the above

91
Q

How many squares of roofing are needed to cover 5630 sq ft of roof?

A. 45

B. 50

C. 55

D. 57

A

D. 57

The actual amount of roofing may be more than 100 square feet, but only by an amount equal to the lap required in a normal installation. 1 square of roofing covers 100 square feet of roof when installed in a typical manner.
5,630 sq ft = 100 sq ft = 56.3
squares.

92
Q

What is the minimum height an extension ladder should extend above a finished floor?

A. 3 ft

B. 4 ft

C. 5 ft

D. 6 ft

A

A. 3 ft

93
Q

What is the proper ratio for rectangular gutters of gutter depth to width?

A. 1:2

B. 1:3

C. 3:4

D. 3:5

A

C. 3:4

94
Q

Who is responsible for erecting protective pedestrian canopies near a construction or demolition site?

A. erection contractor

B. general contractor

C. structural engineer

D. pedestrians

A

B. general contractor

95
Q

What is the proper procedure to plumb an existing steel frame?

A. start at the bottom

B. start at the top

C. start at the middle

D. start anywhere, it doesn’t matter

A

A. start at the bottom

96
Q

Which of the following should not be used to waterproof a 1/4 pitch roof?

A. shingles

B. tiles

C. built-up roofing

D. roll roofing

A

C. built-up roofing

97
Q

What do the terms “turn of the nut” or
“turn of the head” mean in relation to bolt methods?

A. they are methods of tightening steel fasteners in beam and column correction so that they will have the proper torque

B. they are methods of column tightening

C. tightening is controlled by hand pressure

D. none of the above

A

A. they are methods of tightening steel fasteners in beam and column correction so that they will have the proper torque

98
Q

What is important to remember about flashing in earthquake prone areas?

A. flexible materials like PVC are used

B. expansion joints are especially important and are sometimes capped with a flexible flashing

C. both A & B

D. none of the above

A

C. both A & B

99
Q

Power tools should

A. be grounded

B. have a 3-prong, plug

C. be double insulated

D. any of the above

A

D. any of the above

100
Q

Which of the following describes waterproofing for a 6:12 slope?

A. if asphalt emulsion is used as part of the job, it must be a steep grade (high melt) type that won’t flow down the slope

B. coal tar pitch should not be used

C. both A & B

D. none of the above

A

C. both A & B

(c-51) Structural Steel (6 decks)

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