Chapter Tests
and Problems
ChaPTer 24 Civil DrafTing TesT
INSTRUCTIONS
Answer the questions with short, complete statements or draw–
ings as needed.
QUESTIONS
1. Describes the difference between a bearing and a true
azimuth. Give specific examples of each.
2. What is the azimuth of a line that has a bearing of S 258 W?
3. What is the azimuth of a line that has a bearing of N 308 W?
4. What is the bearing of a line that has an azimuth of 808?
5. What is the bearing of a line that has an azimuth of 2378?
6. Describe isogonic lines. What importance do they have in
surveying?
7. If you were to draw an example of a north arrow on a map
showing the area around Caracas, South America, what
would be the approximate difference in degrees and direc-
tion for the magnetic north arrow? (See Figure 24.12.)
8. What is the difference between a closed traverse and a
deflection-angle traverse?
9. What is a “chain”?
10. In what two ways can a Philadelphia rod be used?
11. Define contour lines.
12. Describe the difference between an EDM system and a MOD
system.
13. Given a known elevation at a known distance from a transit,
describe how you would find an unknown elevation using
foresight and backsight. Give an example with your own
arbitrary figures.
14. What is a bench mark?
15. What is meant by 13 1 79.06?
16. Is Virginia one of the public-land states?
17. Describe the difference between the rectangular system and
the metes and bounds system.
18. Is there only one meridian used for land surveys in the
United States? Explain.
19. What is the difference between TIN and TIS?
20. When looking at a topographical map (one which shows
topography), how would you find the difference between an
index contour and an intermediate contour?
21. What information is used in curve data?
22. What is a PI?
23. In a profile layout, why is the vertical scale exaggerated from
the horizontal scale?
24. What is the grade slope of a water main in which the IE at
MH#1 is 34.88, the IE at MN#2 is 45.52, and the distance
between the manholes is 1038.76 feet?
25. Describe the angle of repose. Give an example of how it is
used.
26. Describe how new contours are shown on a building site.
Also describe how new contours affect the profile of a
section of a building site.
27. Describe a great circle.
28. What is the similarity between a connecting traverse and a
loop traverse?
29. Describe the difference between a contour map and a
profile map.
30. Define IE. Describe how it is used.
31. What are the four common abbreviations used when plot-
ting a vertical curve? Describe them.
32. Define the prime meridian.
33. How large is a township?
34. How large is a section?
35. What is the number of the section in the lower left-hand
corner of a township?
36. What influences the size of the drawing sheet recommended
for site plans?
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37. What four factors influence scale selection in drawing a site
plan?
38. List five elements of information that should be determined
before starting a site plan drawing.
39. Why are construction lines helpful in site plan layout?
40. Information used to prepare a site plan can come from one
or more of several available sources. List four possible
sources.
41. List at least six types of information that should be deter–
mined before the site plan can be completed.
42. Define setbacks.
43. If you are using a CADD system to draw a site plan, what
would be a typical prompt in drawing a 134.929 property line
with a N 888069140 W bearing?
44. Is it true or false that one of the advantages of CADD over
manual drafting is accuracy?
45. Identify at least one difference between residential and
commercial site plans.
46. Define contour lines.
47. Describe the control point survey.
48. Describe the radial survey.
49. What is the transit station?
50. Explain how a grid survey is set up.
51. What is the distance to station point 0 1 40?
52. What is the distance to station point 1 1 60?
53. Explain the difference between index and intermediate con–
tour lines.
54. Define profile.
55. Why is the vertical profile scale exaggerated?
56. In addition to the elevation of the excavation site, what does
the grading plan show?
57. Define angle of repose.
58. What are field notes?
59. Why is the horizontal scale of the profile the same as the
map scale?
60. In a grid survey, what is used to label the vertical lines?
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102
Chapter 24
Civil Drafting
Answers to End-of-Chapter Test Questions
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