Bu basic CH5 Flashcards

1
Q
  1. What are conducted to obtain data essential for planning, estimating, locating, and layout for the various phases of construction activities or projects? (Page 5-4)
A

construction surveys

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2
Q
  1. What do surveys rely on to establish a known elevation on a construction site? (Page 5-4)
A

bench marks

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3
Q
  1. In most permanent military installations, monument BMs are established in a grid system approximately how far apart throughout the base to have a ready reference for elevations of later construction in the station? (Page 5-7)
A

1/2 mile

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4
Q
  1. What are specific tide levels that surveyors use as surfaces of reference for depth measurements in the sea and as a base for determining elevations on land? (Page 5-8)
A

tidal datums

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5
Q
  1. What is the average height of the sea for all stages of the tide after long periods of observations? (Page 5- 8)
A

mean sea level (MSL)

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6
Q
  1. What term refers to the first working over of an area that is overgrown or rough? (Page 5-9)
A

pioneering

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7
Q
  1. What is a construction operation consisting of cleaning a designated area of trees, timber, brush, other vegetation, and rubbish? (Page 5-9)
A

clearing

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8
Q
  1. What is the uprooting and removing of roots and stumps referred to as? (Page 5-10)
A

grubbing

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9
Q
  1. What is the process of removing and disposing of objectionable topsoil and sod referred to as? (Page 5- 10)
A

stripping

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10
Q
  1. What is the material removed by stripping called? (Page 5-10)
A

spoil

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11
Q
  1. Dozers can handle all short-haul excavations up to how many feet? (Page 5-10)
A

300

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12
Q
  1. What equipment should be used for long-haul excavations over 300 feet? (Page 5-10)
A

scrapers

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13
Q
  1. What is the construction of facilities needed to allow excess surface and subsurface water to flow from the construction site? (Page 5-11)
A

drainage

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14
Q
  1. What is the instrument most commonly used to attain the level line of sight required for differential leveling? (Page 5-17)
A

dumpy level

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15
Q
  1. What is the most popular and frequently used type of leveling rod? (Page 5-22)
A

philadelphia rod

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16
Q
  1. What is the fully extended length of the Philadelphia rod? (Page 5-22)
A

13.10 feet

17
Q
  1. What is the most common procedure for determining elevations in the field, or for locating points at specified elevations? (Page 5-27)
A

differential leveling

18
Q
  1. What is the plotting of irregularities of the ground, making cuts or fills, to a definite limit of grade, elevation, and alignment? (Page 5-34)
A

grade work

19
Q
  1. Hub stakes are 2 inches by 2 inches by approximately how many inches and are used primarily for well-defined surveyors reference points? (Page 5-34)
A

12 inches

20
Q
  1. What mark the horizontal location of the earthwork to be completed and give the direction of the proposed construction? (Page 5-35)
A

line stakes

21
Q
  1. What is the lowering the elevation of a grade known as? (Page 5-39)
A

making a cut

22
Q
  1. What types of stakes are set on the property line of a construction site known as? (Page 5-42)
A

right of way stakes

23
Q
  1. The Unified Soil Classification System (USCS) divides all soils into three major divisions: coarse- grained soils, fine-grained soils, and what other type of soils? (Page 5-42)
A

highly organic

24
Q
  1. What type of soils are those in which at least half of the material, by weight, is larger than, or retained on, a No. 200 sieve? (Page 5-42)
A

coarse-grained

25
Q
  1. What are two of the most common and important soils tests that an Engineering Aid (EA) must learn to perform? (Page 5-42)
A

soil compaction and density testing

26
Q
  1. What is the process of increasing the density, or the amount of solids per unit volume, of soil by mechanical means to improve such soil properties as strength, permeability, and compressibility? (Page 5- 43)
A

compaction

27
Q
  1. For most soils and for a given compactive effort, the density of the soil will increase to a certain point as the moisture content is increased. What is that point called? (Page 5-43)
A

maximum density

28
Q
  1. What is the moisture content at which maximum density occurs called? (Page 5-43)
A

optimum moisture content (OMC)

29
Q
  1. What is the bearing capacity of a soil expressed in terms of? (Page 5-44)
A

shear resistance

30
Q
  1. What is a measure of the shearing resistance of a soil under carefully controlled conditions of density and moisture? (Page 5-44)
A

california bearing ratio (cbr) test

31
Q
  1. A soil is considered susceptible to frost when it contains what percent or more by weight of particles smaller than 0.020 mm in diameter? (Page 5-44)
A

3 percent

32
Q
  1. How many purposes for soil stabilization are there? (Page 5-44)
A

three

33
Q
  1. What method of applying soil stabilization is used where it is necessary to combine two different soils together for stabilization? (Page 5-45)
A

admix