SUBCOURSE EDITION - Modern Prepper

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4-13. Plotting Positions of Control Stationsa. Rectangular Grid Coordinates. The station description cards or trig lists furnished for controldata, normally give the grid coordinates of the control station. The positions of the station can beplotted on the compilation base using the same methods described in paragraph 4-11c or 4-12 for theplotting of projection intersections. After the point is plotted, it should be carefully identified andlabeled.b. Geographic Coordinates. Control points may also be located and plotted using thegeographic coordinates of the projection. The nearest projection ticks should be connected andsubdivided into 1-minute quadrangles. Each 1-minute quadrangle, which equals 60 seconds, can bedivided into 60 divisions using a metric scale. On the scale, choose a value easily divisible by 60, such as60 millimeters, 120 millimeters, 180 millimeters, or 240 millimeters and capable of covering the distancebetween the minute lines. Each value of 1 second is then equal to 1, 2, 3, or 4 millimeters, respectively.The number of seconds multiplied by these factors equals the number of divisions to be plotted.4-14. Accuracy RequirementsThe final accuracy of any map depends upon the accuracy of the grid, projection, and control plotting onthe compilation. To maintain the required accuracy, the grid must be plotted to 0.13 millimeters (0.005inch), the projection must not be in error by more than 0.13 millimeters when referred to the grid, andthe control must be within 0.13 millimeters when referred to the projection.143
EXAMINATIONPART I - CONSTRUCT MAP GRIDSelect the correct answer for each of the following multiple-choice questions. Record your answers onthe ACCP Examination Response Sheet located at the back of this book.Requirement: Questions 1 through 8 refer to DA Form 1941 in figure 1.1. What is the Grid Zone Designation for the map sheet?A. 18sB. 75°WC. UTMD. CLARK 18662. What is the value of the Central Meridian for the map sheet?A. 18sB. 75°C. UTMD. CLARK 18663. What is the grid interval plotting size for the grid?A. .002B. 2 cmC. 4 cmD. 1000 m4. What is the value of the first full northing grid line along the north side of the map?A. 09B. 15C. 82D. 90145
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SUBCOURSEEDITIONEN5302 6US ARMY ENG
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PAGELESSON 5 - GEODETIC CONTROL....
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GRADING AND CERTIFICATION INSTRUCTI
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INSTRUCTIONAL CONTENT1. During your
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Figure 1-2. DA Form 1941 heading.b.
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d. Grid Size (fig 1-4). Now that yo
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c. When determining the number of g
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REVIEW EXERCISESNow that you have w
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Figure 1-5. Completed DA Form 1941.
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EXERCISE SOLUTIONS1. C, 125 (para 3
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INSTRUCTIONAL CONTENT1. Now that yo
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Step 3: Determine the approximate c
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Figure 2-5. Swing centerline arc.d.
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Divide the results by 2:of the grid
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Step 10: Construct the four corners
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a. Using the invar scale and beam c
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Step 14: Set the dividers or compas
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Figure 2-19. Grid labels.This compl
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4. You have found the center of the
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LESSON EXERCISE RESPONSE SHEET1. __
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LESSON 3 - PROJECTION COMPUTATIONSO
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44Figure 3-1. Completed DA Form 194
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(3) The equivalent UTM grid values
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Figure 3-4a. Southwest corner.Figur
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50Figure 3-6. DA Form 1932.
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a. Heading (fig 3-7). The heading i
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54Figure 3-9. Line showing 38° 30'
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(10) The graticule tick 38° 30'W l
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58Figure 3-12. DA Form 1941 (Phoeni
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60Figure 3-13. DA Form 1932 (Phoeni
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LESSON EXERCISE RESPONSE SHEET1. __
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LESSON 4 - MAP PROJECTION CONSTRUCT
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68Figure 4-1. DA Form 1941 (Virgini
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corner, you always plot the distanc
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Step 4: The intersections formed by
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Step 6: The intersections formed by
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Figure 4-11. DA Form 1932.Step 3: E
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Refer to the DA Form 1932 (fig 4-12
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Step 6: Graticule ticks are plotted
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The intersections formed by the 1.2
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Step 2: Drafting graticule ticks (f
Page 84 and 85: REVIEW EXERCISESNow that you have w
Page 86 and 87: Figure 4-22. DA Form 1941 (Ft. Belv
Page 88 and 89: Figure 4-23. DA Form 1932 (cont).91
Page 90 and 91: EXERCISE SOLUTIONS1. B, 0872 (para
Page 92 and 93: INSTRUCTIONAL CONTENT1. The term "c
Page 94 and 95: Figure 5-2. Heading information of
Page 96 and 97: Figure 5-5. Bottom of DA Form 1959
Page 98 and 99: 4. What are the centimeter plotting
Page 100 and 101: LESSON EXERCISE RESPONSE SHEET1. __
Page 102 and 103: LESSON 6 - PLOTTING GEODETIC CONTRO
Page 104 and 105: 112Figure 6-1. Completed DA Form 19
Page 106 and 107: Step 3: Plot the easting value of t
Page 108 and 109: Step 7: Connect these two arcs with
Page 110 and 111: REVIEW EXERCISESNow that you have w
Page 112 and 113: Figure 6-10. Completed DA Form 1959
Page 114 and 115: LESSON EXERCISE RESPONSE SHEET1. __
Page 116 and 117: Note: The following material is an
Page 118 and 119: d. Although Greenwich, England, is
Page 120 and 121: (3) Lambert Conformal Conic Project
Page 122 and 123: 4-7. Identification of ControlIn or
Page 124 and 125: For example, if one end of the comp
Page 126 and 127: horizontal lines, and then repeated
Page 128 and 129: . To plot the geographic coordinate
Page 130 and 131: (1) First, determine the correct sp
Page 132 and 133: (5) Note that for each 5 minutes of
Page 136 and 137: 5. What is the value of the first f
Page 138 and 139: PART II - CONSTRUCT MAP PROJECTIONR
Page 140 and 141: Requirement: Questions 16 through 2
Page 142 and 143: 20. Refer to question 19. From whic
Page 144 and 145: 154Figure 3. Completed DA Form 1959
Page 146: LEAVENWORTHU.S. GOVERNMENT PRINTING
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