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C-12 License And Law > Study Guide C-12 Test Questions > Flashcards

Study Guide C-12 Test Questions Flashcards

1
Q

What are the standard size of HANDICAP accessible stalls in a parking lot ?

A

18’ x 9’ ( 216” x 108” )

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2
Q

What are the standard size of standard, compact car stalls in a parking lot ?

A

15’ x 6’

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3
Q

What are the standard size of standard, large size car stalls in a parking lot ?

A

19’ x 7’ ( 228” x 84” )

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4
Q

What is considered first when planning a traffic control zone ?

A

The safe flow of traffic through the zone

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5
Q

How many type 2 barricades does it take to close the shoulder and one lane of a freeway ?

A

4 barricades

( 2 for each lane closed and 2 for the shoulder )

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6
Q

According to cal trans , paint applied to pavement in one coat must be applied at a rate of 1 gallon per:

A

107 sq ft

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7
Q

According to cal trans, stripes and pavement marking on new surfaces must be applied with how many coats, unless otherwise required specifications ?

A

2 coats

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8
Q

Which color is most commonly used for stall outlines ?

A

White

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9
Q

Lighting poles in a parking facility are usually installed _____ of a double row of parking stalls.

A

Along the centerline

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10
Q

What is overhang ?

A

Distance from from the striking face of a wheel stop to the property line or wall

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11
Q

How long should you wait before you put a second coat of striping paint on a freeway ?

A

Until first coat is dry

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12
Q

When laying striping lines, spots should be placed a maximum of every ____ on curves

A

5 feet

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13
Q

How long must you wait before you put pavement markers on new asphalt that is open to traffic ?

A

7 days

( 14 days IF you use epoxy adhesive )

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14
Q

Experience has established a _____ width of line as the best practice for pavement markings

A

5 inch

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15
Q

How do you know you are reaching maximum compaction when rolling with a sheepsfoot roller ?

A

Roller will start walking out of the compaction area

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16
Q

Why would you put fabric down over old asphalt when overlaying with new asphalt ?

A

To help control reflection cracking

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17
Q

Where do you dispose of broken concrete ?

A

Landfill ( if not does meet requirements to put along roadway)

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18
Q

What is benching ?

A

Making a step-like cut into a slope. Used for erosion control and to tie or key in new fills to an existing slope

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19
Q

According to Caltrans specifications, no more than ___ (by weight ) of high-calcium hydrates lime used for treatment of bases may be retained on a No. 30 sieve.

A

3%

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20
Q

Most specifications for lime- treated bases require mixing to be completed within _____ hours

A

72 hours

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21
Q

According to Caltrans specifications, lime should be added to base material to be treated __ to___% ( by weight) of the dry material

A

2.5% to 5%

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22
Q

According to Caltrans, lime treated base material may not be mixed or spread when atmospheric temperature is below :

A

35˚F

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23
Q

When working close to an obstruction , such as a manhole, it is preferable to leave a small plug of dirt in the trench, what machine is known to leave a small plug ?

A

Bucket line trencher

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24
Q

According to Cal/OSHA, all trenches _____ or deeper, must be shored, benched , sloped or otherwise protected.

A

5 feet

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25
Q

What is a hinge point ?

A

A point where the fill slope and the road or shoulder grade begin

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26
Q

What is a hinge point ?

A

A point where a fill slope stops and the road or shoulder grade begins

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27
Q

What is the first step when applying lime to a sub-base surface ?

A

Scarify the sub base

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28
Q

Lime cures slowly. Sometimes a lime base will initially fail the compaction test. If this happens you should allow about ____ hours to set before retesting.

A

18 hours

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29
Q

Which equipment would you use for digging a ditch 6 inches wide and 2 feet deep ?

A

Wheel trencher

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30
Q

What is the correct equipment to use for digging a manhole ?

A

Backhoe

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31
Q

You are pouring concrete around a culvert. Once it is buried , the distance between the embankment and culvert must be at least :

A

6 inches

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32
Q

If you are digging a 5 ft trench for a pipe, how wide should the embankment be ?

A

8 feet

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33
Q

According to Standard Specifications for Public Works Construction , roots must be removed to a depth of ____feet . The asphalt institute requires only ____ feet.

A

3 feet

2 feet

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34
Q

What does it mean when blue smoke comes out of an asphalt truck ?

A

Mix is too hot

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35
Q

After aggregate has been watered, spread, and rolled, what stakes should the grader operator follow for fine trimming ?

A

Guineas or blue tops

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36
Q

Immediately before applying asphaltic emulsion, the surface to be seal must be :

A

Clean and dry

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37
Q

Standard concrete reaches its design strength in how many days ?

A

28 days

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38
Q

What is double dumping ?

A

Spreading a lift of earth material over a previously placed lift that had not been properly compacted

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39
Q

What is stabilization fill ?

A

An equipment width compacted fill

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40
Q

On public works project, how is concrete removal paid for ?

A

Per cubic yard. Square yard, or lump sum

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41
Q

Which type of slurry seal contains the most asphalt filler?

A

Type 1

42
Q

Asphalt concrete is estimated and sold by the:

A

Ton

43
Q

What is the minimum recommended size roller for most street and highway paving ?

A

10 tons

44
Q

What is the maximum slope for a curb ramp on a sidewalk ?

A

1:12 ( 8.3%)

45
Q

When navigating a slope, at what angle should the equipment operate ?

A

Parallel to slope

46
Q

When compacting base aggregate, the lifts should not be more than :

A

6 inches

47
Q

When depositing a structure backfill against the back of a concrete retaining wall, it cannot be placed until after concrete has developed a 28-day strength OR a strength of at least ______ psi

A

2,500

48
Q

Construction materials may not be stored on streets, roads, or highways for more than _____ after unloading

A

5 days

49
Q

“ Road-Oils” are :

A

Slow-curing cutback asphalts

50
Q

How many pounds of aggregate should be added to coal tar pitch ?

A

3 to 6 lbs per gallon

51
Q

A seal coat should not be applied to a new asphalt concrete surface until _____ days after spreading and compacting of the new asphalt concrete

A

30 days

52
Q

Spray bars must have a length of at least :

A

9 feet

53
Q

How much is an “ extra long ton “ (ETL) of slurry and what does it include ?

A

2,000 lbs of dry aggregate

Includes emulsified asphalt , water and any accelerators used.

54
Q

Seal coats must be allowed to cure for a least ___ between applications

A

4 hours

55
Q

The thickness of each layer of structure backfill must not exceed _____ before compaction , except that if compaction if done by ponding and jetting, the thickness of each layer may be as much as _________

A

0.67/ft ( 8”)

4 feet

56
Q

Slurry cement backfill must be placed within ____ after mixing

A

1 hour

57
Q

Immediately before applying coal tar emulsion, the pavement surface must be :

A

Dampened

58
Q

Tree stumps are located in an embankment area where you are working. What must you do ?

A

Clear away stumps to a depth of at least 2 feet below the original ground level.

( Asphalt Institute )

59
Q

What type of equipment would you use to compact clay ?

A

Sheepsfoot roller

60
Q

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

A

Scarp

61
Q

The maximum slope of an excavation constructed on a hillside is:

A

2 to 1

62
Q

When finish-grading, what is the allowable tolerance ?

A

0.08 ft

63
Q

What is the minimum width of a temporary traffic lane ?

A

10 ft

64
Q

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

A

Two feet from top back of curb cut one foot

65
Q

Each trench must have a uniform bearing throughout the entire length and must be free of jagged rubble, rock, broken concrete, asphalt concrete and sharp objects greater than ___ inches in greatest dimension.

A

2 inches

66
Q

According to CalTrans, the center of a highway sign must be at least ____ feet above pavement level

A

4

67
Q

PUBLIC WORKS CONSTRUCTION requires roots must be removed to a depth of ____ ft below existing ground surface or sub-grade .

A

3 feet

68
Q

ASPHALT INSTITUTE requires roots must be removed to a depth of ____ ft below existing ground surface or sub-grade .

A

2 feet

69
Q

You should deposit a structure backfill in ___ inch lifts against a lime concrete retaining wall that has cured to 28-day strength

A

6” to 8”

70
Q

Which compaction test is the oldest and most accurate ?

A

Sand cone test

71
Q

Which compaction test is the fastest ?

A

Nuclear

72
Q

How is a man hole constructed ?

A

Bottom , barrels, cone, grade rings, top casting

73
Q

In most soils, __ to ___% water must be added to start the action of lime

A

15% to 18%

74
Q

When using a wheel trencher, it should be equipped with a ___ to keep loose dirt from being left in the bottom of the trench behind the wheel.

A

Crumbing shoe

75
Q

According to Caltrans, at least ___ of cement must be used for each cubic yard of soil cement bedding produced .

A

282 lbs

76
Q

Excavation required to construct a ditch or channel designated with a bottom width of __ OR MORE is classified by CalTrans as a roadway excavation

A

12 feet

77
Q

At night, traffic warning lights must broadcast a ____ light, and flaggers must use a _____ light.

A

Yellow ; Red

78
Q

What are chokers ?

A

Road shoulders that must remain higher than subgrade level

79
Q

What is the maximum joint distance in sidewalks ?

A

3 m

80
Q

A model 12 grader can rip asphalt less than ___ thick and still get good production

A

4”

81
Q

If asphalt is 4 inches thick, what machine should you use to rip it ?

A

Model 14- grader plus a rear ripper rack

82
Q

Is asphalt is 6 inches thick or more, what machine should you use to rip it ?

A

Model 16 grader or dozer with rippers

83
Q

When working slopes on a rocky job, the operator Should level and smooth out the bottom grade the tractor is working from :

A

After each slope pass

84
Q

If drill rig is used to remove soil adjacent to utility lines, the holes should be ______ after the work is finished

A

Backfilled

85
Q

Most job specifications require asphalt to be spread when ambient are temperature is at least :

A

40˚F

86
Q

Most job specifications require OPEN-GRADED asphalts to be spread when ambient air temperature is ____ or more

A

60˚F

87
Q

What is the diameter of #4 rebar ?

A

1/2”

88
Q

Why would you apply a slurry coat to a roadway ?

A

You need to stripe the roadway
Roadway is too slippery
Roadway is old and cracking

89
Q

What does the term “balanced dirt job” refer to ?

A

No excess in cut and fill job

90
Q

What is the best choice for erosion control ?

A

Rye grass

91
Q

What is the recommend pumping temperature for asphalt cement used for under sealing PCC pavements ?

A

200˚ to 300˚ C

92
Q

What is the maximum recommended atmospheric temperature in degrees Celcius for mixing or plain concrete ?

A

2˚C ( 35˚ F )

93
Q

If the bottom width of a ditch or channel exceeds 12 feet, the width must be at least ___ outside the slope.

A

5 feet

94
Q

If the bottom width of a ditch or channel of LESS than 12 feet, the width must be at least ___ outside the slope

A

2 feet

95
Q

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

A

Test pits

96
Q

Which tractor is used for finished grading ?

A

Motor grader

97
Q

Asphalt emulsion should be what type ?

A

Cationic

98
Q

If you are removing cold asphalt slightly thicker than 4” , what machine should you use ?

A

Scraper followed by a push dozer or grader

99
Q

If you are removing asphalt approximately 10” thick in a narrow area, what machine is best used ?

A

Track hoe

100
Q

During asphalt paving, approximately how long will the asphalt mat be for each load of a 25-ton bottom dump truck ?

A

180 feet

C-12 License And Law (20 decks)

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