General A > Online Test 3 > Flashcards

Online Test 3 Flashcards

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1
Q

Method for designing asphalt mixes

A
  • Marshal method
  • Hveem method
  • Hubbard field met
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2
Q

1 KIP how many pounds?

A

1 KIPs stand for kilo pounds
2 kip = 1,000 pounds

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3
Q

To determine the type of undisturbed substrate underlying soil, the most reliable method is:

A

Test pits
- test pits allow soil engineering the opportunity to assess soil subsurface before building the structure.

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4
Q

In grading for a curb, the grade setter marks “2TBC C-1.00.” What does this mean?

A

Two feet from top back of curb cut one foot

  • TBC is survey marking and it stands for “ Top Back of Curb “ which means a point at the top of the concrete, at the back side towards the property of the curb.
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5
Q

The most common structural steel welding process is:

A
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6
Q

Warm air is moving towards cold air in a raceway. Which is most likely to happen?

A

Condensation
- Condensation is the change of the state of matter from the gas phase into the liquid phase, and is the reverse of vaporization.

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7
Q

On what type of surface should you not use latex paint?

A

Smooth gypsum board
- PVA (polyvinyl acetate) is recommended for drywall because it does not raise the nap.

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8
Q

If soil supports 2000 pounds per square foot, and a building column exerts 50 kips, what is the minimum measurement of one side of a square footing needed to support the load?

A

5 feet
50 kip = 50,000 / 2000= 25
Since footing is square
25/5 =5 feet

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9
Q

What is the advantage of using armor cable over nonmetallic cable?

A

Resists breakage by mechanical causes
-Advantage is that armored cables provide sufficient protection against mechanical risks.

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10
Q

What happens when water is added to dry soil which is then compacted?

A

Soil becomes denser until optimum density is achieved.

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11
Q

What is the name of a formula that relates the pressure distribution between a foundation and the underlying soil?

A

Boussinesq
- is the name of the French mathematician and physicist who developed the equation.

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12
Q

What would be associated with low shrinkage concrete?

A

Granite aggregate
- granite aggregate are crushed hard rock of granular structure, being the most common on Earth.

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13
Q

What is a quarter crown?

A

Area between the center line of a road and the curb of shoulder that runs parallel
- Crown describes the cross section shape of a road surface and helps with the sheds of water to both sides.

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14
Q
A
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15
Q

When load testing an object or structure how long should the load be applied?

A

24 hours

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16
Q

What degree of bend is not allowed in a horizontal bar with a hook in a beam?

A

60 degrees
- Is not allowed in a horizontal bar with a hook in a beam

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17
Q

A steep near vertical slope along the margin of a landslide is called:

A

Scarp
- scarp usually formed by differential erosion of sedimentary rocks and vertical movement of the earth crust.

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18
Q

Which of the following is related to the spread footing concept?

A

Continuous footing
-* Inverted T-beam is a type of raft or mat foundation, not a spread footing.

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19
Q

Which of the following is related to the spread footing concept?

A

Continuous footing
-* Inverted T-beam is a type of raft or mat foundation, not a spread footing.

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20
Q

Maximum slope of an excavation to construct on a hillside:

A

2 to 1
- slopes for permanent fill or cut shall be not steeper than one unit vertical in two units horizontal 2:1 (50 percent slope)

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21
Q

In construction of concrete T-beam, the width of slab effective as a T-beam flange may not exceed —the span length of the beam.

A

1/4
The span length of the span length ACI 318-11

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22
Q

What is the correct moment within any structure?

A

Equal and opposite
- External force applied to the elements can go equal or opposite.

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23
Q
A
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24
Q

Which test would indicate the presence of harmful vegetable matter?

A

Colorimetric test
-The sodium hydroxide colorimetric test is used to detect high organic content in aggregate.

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25
Class A import soil:
Must be approved by engineer - Type A means cohesive soils with an unconfined, compressive strength of 1.5 ton per square foot and needs to be approved by engineer.
26
The ball penetration test is used to determine:
The consistency of concrete - The ball penetration test is sometimes called the "Kellyball test". It's use in addition to or in place of the slump test.
27
The hotter the temperature at which brick is fired:
The greater the resistance to weather conditions - The hotter firing of the brick creates a greater resistance to the weather conditions because the properties of the fired brick are strengthen,porosity, stability against moisture and hardness.
28
When finish grading, what is the allowable tolerance?
0.08' The allowable tolerance of finished grading is 0.8 feet and the goal of construction is to meet the lines and grade specified. Not following the tolerance can affect the vegetation, causing cracking,sliding and many other problems.
29
What is the minimum width of a temporary traffic lane?
10 feet - Minimum 10' drivable lane width should be provided where possible.
30
If the surface of asphalt has a dull appearance, what is indicated?
Need more oil - Asphalt made with crude oil. If appearance is dull the remedy is add more oil.
31
If the surface of asphalt has a dull appearance, what is indicated?
Need more oil
32
If the surface of asphalt is too shiny, what is the problem?
Too much oil
33
When asphalt is too cool, what does it look like?
Stiff appearance
34
The standard for highway safety as it relates to flagger's signals come from the California.
Department of Transportation - State Department of Transportation is also known as Caltrans.
35
Borrow for a job was not mentioned in the specifications. If borrow is needed who would pay for it?
Contractor - because he signed the contract
36
If trench walls are too loose or soft for shoring, the walls must be sloped a minimum of:
3/4:1 - In order world, for every foot the trench rises vertical, the backhoe must move 3/4 feet horizontal.
37
Which statement is correct about using a bucket line trencher?
Can get closer to pipe - bucket line trencher remove large amount of material and are commonly used for cross county pipeline projects
38
Where do you set a string line before paving with asphalt?
6" offset from center line of roadway - String line is set at center line with a 6" offset away from area being paved.
39
After paving one side of road with asphalt, where do you locate the string line for the center longitudinal joint?
No necessary - String line is actually not needed at center line because the pavement there is placed flush against the first pass.
40
What type of equipment is best for working mud?
Track dozer or loader - A track dozer can work on even slopes, rough surfaces and loader are sturdy, durable and versatile.
41
Type "A" warning light are:
Low intensity - Type A are low intensity flashing warning lights. Steady burn light are Type "C"
42
Type "B" warning lights are:
High intensity - Type B are high intensity flashing warning lights. Steady burn light are Type "C"
43
What is it called when rocks in an aggregate base have come to the top with no fines to bind them?
Bony grade - The rocks are called "bond" The bad is called "bony" grade
44
When ripping extremely hard and rocky ground with a dozer which should you do?
Rip from north to south
45
When breaking up concrete for use in fill, what is the maximum dimension allowed for any piece?
6" - 6" in piece can be used as solid filler.
46
When paving a cul de sac, you make the first pass at the outside edge and the second pass far away from the first to avoid overlapping. This is:
Incorrect- second pass should overlap slightly with the first pass.
47
Which type of equipment is best for trenching In very or soft soil?
Dragline
48
A road grade falls 10' over a horizontal distance of 20'. What is the slope?
2:1 - In order surveying, slope are defined as the ratio of horizontal to vertical: 20 feet/ 10 feet 2:1
49
When you are paving an asphalt road in one pass, how should you proceed?
Start rolling on low side and progress toward high side - When the surface is super elevated you need to start rolling on low side and progress toward high side.
50
How far the nearest tree or pipeline must you bury the concrete?
10'
51
A builders transit usually does not have a:
Compass -Compass. The transit has to be leveled and user will need to find true north.
52
Placement of open web joist work is best done by a(n):
Iron worker
53
Why is rebar tied?
To hold it in place during a pour
54
If a pipe cannot be connected properly whom should be contacted?
Engineer
55
If crew hits a utility line while on a construction job, what should be done?
Notify engineer and utility company
56
What is the distance from the head jamb rabbet to the top of the upper hinge barrel when installing a door?
5-6 inches - Head jamb rabbet to the top of the upper hinge barrel is 5-6" because it is always in tension with the forces applied.
57
The best saw to use when cutting with the grain is a:
Ripsaw - A saw for cutting wood in the direction of the grain
58
How long after unloading materials can you leave them in the street, road or highway?
5 days
59
If you are driving nail and find they have a tendency to split the board, what alternative type of nail might you use to prevent the splitting?
Either sinker or box nails - Because they are lighter than a common nail , it has less shear strength.
60
What is done to the sub- base in asphalt-concrete paving work?
Compact it - Compact the sub base because helps to prevent premature cracking and postpone unwanted repairs.
61
When fine grading is required, the grading engineer:
Replace the lath with hubs - To serve as the actual point of reference for the measurement.
62
Type of welding used when erecting structural steel?
-Shielded metal - arc - Gas metal - arc - Submerged - arc
63
Safe distance requirement from overhead electrical lines energized between 600v and 50000 volt is — for boom- type lifting and hoisting equipment when it is in transit with the boom lowered and no load attached.
6 feet - When an employee is using boom type lifting or hoisting equipment, the minimum clearance 10' overhead lines carrying between 600-50000 volts. - When the equipment is in transit with the boom lowered and no load attached, the minimum clearance must be 6'
64
Which of the following is a type of compaction test?
Sand cone test - Sand cone test is a reliable method for determining the in place density of soil
65
66
In surveying a stake market with an arrow, without a circle through the tail, indicates:
Grade has not been reached - When the grade has not reached surveyors uses the symbol marked with an arrow without a circle to let client/contractor know the limitations
67
The breakup of the surface of a concrete road is known as:
Spalling - Pailing is a proceed that causes concrete surface to deteriorate, resulting in flaking, chipping, pitting or peeling
68
The minimum required headroom between the nose of any stair and the soffit above is:
6' 8"
69
What is the minimum dimension of a mid rail, where a railing is required for a raised floor, ramp or platform.
1"x6" - It must be placed half way between the top rail and the floor surface. -All wooden parts used for railing assemblies must be select number.
70
When toe boards are required in a construction site what are the minimum dimensions?
4" high off the platform, with no more than 1/4" gap - If materials will be piled high enough to come near the top of a toe boards screen or panels at least up to the mitral must be used
71
Hazardous substance was once applied to wood piers or piles in marine environments, but is no longer allowed where exposed to salt water?
Creasote - Creasote still be used where exposed to earth and fresh water
72
What do you line an old underground storage tank with?
Special coating or bladder - If tank is steel, the inside must be sand blasted clean, inspected and certified as suitable for the coating operation
73
Approximately how much does one cubic foot of asphalt road surface weight?
150 lb On average a cubic yard of solid concrete weighs 4,050 pounds (~2 tons) or 150 pounds per cubic foot.
74
Handrails are required on a ramp that exceeds a slope of:
1:15 (6%)
75
A guardrail is required if a ramp has open sides at a height of over:
30" - this is also includes unenclosed roof and floor openings, porches stairways and landing.
76
What is the problem with placing a foundation on clay?
Characteristics change when wet
77
What kind of foundation is appropriate for a clay base?
Piles
78
Which method of placing a clay sewer line in the same trench with a water utility would most likely be approved?
Lay the water line on an undisturbed shelf that is higher then the sewer line, and to one side of it. - The clay sewer should be in separate trench but you can put 12" above the sewer line with 12"" distance horizontal gap between the water pipe and sewer line and on the undisturbed soil
79
What is the minimum tolerance that must be maintained for a concrete slab to be considered "very Flat"
1/8" - The tolerance can be measured with an electronic profilometers or a straightedge. -Maximum gap that should be seen under a 10' straightedge when placed at random locations and orientation on a finished floor ( but at least 2 feet from any wall) - Conventional (Bullfloated) : 1/2 " -Conventional (Straightedged): 5/16" - Flat: 3/16" - Very Flat: 1/8"
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