General A > Book Test 5 > Flashcards

Book Test 5 Flashcards

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1
Q

Construction pad should have a slop of:

A

2.0%

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2
Q

Concrete pour should always be supervised to prevent

A

Rock pockets, Voids or Sand Streaks

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3
Q

In the formula C2=A2+B2, A Usually refers to:

A

The vertical rise

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4
Q

Hubs are used:

A

To lay out building lines and to set elevations

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5
Q

When do you place loose rock on the subgrade of a road?

A

After compacting the subgrade
-Caltrans standard specifications,place the rock right after compacting subgrade.

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6
Q

Standard requirements for a traffic cone

A

For daytime and low speed roadway must be at least 18” tall.
Cones for night or high speed roadway such as freeway be at least 28” tall

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7
Q

Maximum amount of lead allowable for solder used on piping for portable water system

A

0.2%
Plumbing code prohibits the use of solder that contains more than 0.2% lead for potable water piping

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8
Q

Where should you store blasting caps?
کلاهک های انفجاری

A

Separate from explosives
جدا از مواد انفجاری

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9
Q
A
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10
Q

Minimum size planking for heavy trades scaffold

A

2”x10”
The minimum lumber size is the same. Regardless, scaffold is light,medium or heavy trades

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11
Q

Minimum and maximum height for railings around scaffolds, ramp or other places railing are required

A

42-45 inches

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12
Q

Common name used for a heating and air conditioning unit

A

Reverse cycle heat pump

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13
Q

Retaining wall should be engineered when they are taller than

A

6 feet

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14
Q

How do you nail tar paper on a roof?

A

Every 9” on the edge and 18” in the center

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15
Q

When do you have to finish driving concrete piling into the ground once you have started?

A

Until you are done

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16
Q

The minimum spacing for anchor bolts in sills is:

A

6 feet O.C and within 12 inches of ends

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17
Q

Minimum embedment of 1/2 inch anchor bolts in concrete or masonry?

A

7”

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18
Q

What does sulfate do to concrete?

A

Causes swelling and disintegrating

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19
Q

What type of aggregate is best for pumping concrete?

A

Round

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20
Q

What type of aggregate is best for pumping concrete?

A

Brushing or brooming

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21
Q

Basement concrete walls should have a minimum test PSI at 30 days of:

A
  • 4,000 PSI
  • Class A concrete
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22
Q

When placing rebar, the best time to make splices is:

A

After placing and spacing, and after supports are set

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23
Q

If concrete is intended to be watertight and if it is made with normal weight aggregate, the water cement ratio must not be greater than—–by weight for fresh water.

A

0.5

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24
Q

One horsepower is equivalent to:

A

746 watts

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25
Brick is formed by cutting the clay, with wires before firing, what type is it?
Wire cut
26
What tools is used to avoid breaking the edges?
Trowel
27
The absolute zero scale for Fahrenheit is:
Rankin
28
The absolute zero scale for centigrade is:
Kelvin
29
Gas law that states "When two gases occupy the same space the combined gases fill the same volume that either gas would fill by itself" is called:
Dalton's law
30
What is the volume in cubic feet of an area 25 meters x 14 meters x 5 feet
18,900 cubic feet 1 meter =3 feet 3.37 inches 3.28 feet 25 meters x 3.28 feet/meters=82 feet 14 meterx3.28feet/meter=45.92 V=length x width x depth 82 x 45.92 x 5 =18,827.2
31
According to the building code, what is the minimum width of a building vestibule?
44 inches Vestibule in an exit path must be at least 44 inches in width and 72 inches in the direction of travel
32
Mobile cranes with booms over 290 feet or with capacity greater than ------require a load indicating device.
50 Tons
33
Cranes with a boom longer than 60 feet or with a rating greater than ------ tons require a boom - angle indicator.
15 Tond
34
Best tools for cutting off rivet and nail heads
Cold chisel
35
Classified as rough hardware
Staple Rough hardware is concealed ( nails,bolts and hangers) Finish hardware is exposed ( door knobs and hinges)
36
How many studs spaced at 21" o.c. Are needed for a wall 28feet long?
17 28*12 / 21=16 +1 = 17
37
What type of cement should be used in cold weather?
Type III High early strength cement
38
What type of cement should be used near sea water and alkali soil or ground water of high sulfate content?
Type V Type V is known as high sulfate cement
39
Slowest cutting cement type is?
Type IV Low heat of Hydration cement
40
What is the largest size rock permitted in compared foundation fill?
12 inches
41
A slow curing asphalt is a ------asphalt.
Liquid
42
Concrete should be poured no longer than -----minutes after mixing.
60 minutes Building code 45-60 minutes
43
Finishing concrete tools
Darby Float Edger
44
The support beneath horizontal form work are called
Shores
45
What are the most commonly used ferrous pipes?
Cat iron Ferrous pipes contain iron
46
Concrete mix commonly
1 part cement, 2 parts sand, 4 parts gravel
47
Grade asphalt
60-70 85-100 200-300
48
What is the size of a standard brick?
8"x 2-1/4" x 3-3/4"
49
Which pipeline dose not require fine grading?
Gas
50
The maximum allowable distance to an exit in a building without automatic sprinkler is:
200 square feet
51
The maximum allowable distance to an exit in a building with approved automatic sprinkler is:
250 square feet
52
The armature winding on an electric motor are:
Single phase
53
What is the minimum permitted clear width for an exit door in building
32"
54
At what temperature does ordinary steel start to deform?
500 centigrade
55
What backfill should be used after concrete forms have been removed?
Gravel
56
A leak in hip-and -valley roof generally happens at:
Valley
57
What angle does separation of concrete normally occur?
1:2
58
Concrete is poured under water with a:
Tremie
59
Water to cement ratios will produce the highest compressive strength
Less water the greater the strength
60
What does a high slump test result indicate?
Too much water -The result of a slump test is expressed in inches of slump( how far the core slumped when the cone from was lifted). Higher numerical test result means that the sample slumped down lower or was less firm
61
Under damp conditions, which chemical is used to speed curing of concrete?
Calcium chloride
62
A soil compaction test refers to:
Density
63
Minimum thickness for a slab on grade is:
4 inches
64
Pouring concrete into a test cylinder, the cylinder should not moved from the site for 12 to------ hours
24 hours
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