SUBCOURSE EDITION - Modern Prepper

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Figure 1-2. DA Form 1941 heading.b. Scale and Grid Interval (fig 1-3). The scale and grid interval information provides thenecessary information needed to determine the distance in centimeters, between the grid lines of the gridthat you will construct. As you have already learned, the map scale is a ratio of a distance on a map toits corresponding distance on the ground. (For example: map scale - 1:50,000; one unit of measurementon the map = 50,000 like units of measurement on the ground.) The grid interval tells you what thespacing between the grid lines is equal to on the ground. Normally, the grid interval for maps withscales of 1:100,000 and smaller (i.e., 1:250,000) is 10,000 meters, and for maps with scales larger than1:100,000, the grid interval is 1,000 meters (i.e., 1:50,000).Figure 1-3. Scale and grid interval.5
(1) Given the following information:Scale = 1:50,000Grid Interval = 1,000 m(2) Where:RF = representative fractionMD = map distanceGD = ground distance(3) Determine: distance between grid lines in centimeters.GD = 1,000 m(4) When substituting the values, the formula is:MD = 1,000 m - 50,000MD = .02 m(5) Now that we have the MD in meters we must convert this value to centimeters. This isdone by multiplying the map distance by 100. In our example:MD = .02 mMD = .02 x 100MD = 2 cmTherefore, the spacing between the grid lines (grid interval plotting size) of the grid to be constructedwill be 2 centimeters. This is the precise distance the grid lines will be drawn in Lesson 2.6
Page 1 and 2: SUBCOURSEEDITIONEN5302 6US ARMY ENG
Page 3 and 4: PAGELESSON 5 - GEODETIC CONTROL....
Page 5 and 6: GRADING AND CERTIFICATION INSTRUCTI
Page 7: INSTRUCTIONAL CONTENT1. During your
Page 12 and 13: d. Grid Size (fig 1-4). Now that yo
Page 14 and 15: c. When determining the number of g
Page 16 and 17: REVIEW EXERCISESNow that you have w
Page 18 and 19: Figure 1-5. Completed DA Form 1941.
Page 20 and 21: EXERCISE SOLUTIONS1. C, 125 (para 3
Page 22 and 23: INSTRUCTIONAL CONTENT1. Now that yo
Page 24 and 25: Step 3: Determine the approximate c
Page 26 and 27: Figure 2-5. Swing centerline arc.d.
Page 28 and 29: Divide the results by 2:of the grid
Page 30 and 31: Step 10: Construct the four corners
Page 32 and 33: a. Using the invar scale and beam c
Page 34 and 35: Step 14: Set the dividers or compas
Page 36 and 37: Figure 2-19. Grid labels.This compl
Page 38 and 39: 4. You have found the center of the
Page 40 and 41: LESSON EXERCISE RESPONSE SHEET1. __
Page 42 and 43: LESSON 3 - PROJECTION COMPUTATIONSO
Page 44 and 45: 44Figure 3-1. Completed DA Form 194
Page 46 and 47: (3) The equivalent UTM grid values
Page 48 and 49: Figure 3-4a. Southwest corner.Figur
Page 50 and 51: 50Figure 3-6. DA Form 1932.
Page 52 and 53: a. Heading (fig 3-7). The heading i
Page 54 and 55: 54Figure 3-9. Line showing 38° 30'
Page 56 and 57: (10) The graticule tick 38° 30'W l
Page 58 and 59: 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
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REVIEW EXERCISESNow that you have w
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Figure 4-22. DA Form 1941 (Ft. Belv
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Figure 4-23. DA Form 1932 (cont).91
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EXERCISE SOLUTIONS1. B, 0872 (para
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INSTRUCTIONAL CONTENT1. The term "c
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Figure 5-2. Heading information of
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Figure 5-5. Bottom of DA Form 1959
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4. What are the centimeter plotting
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LESSON 6 - PLOTTING GEODETIC CONTRO
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112Figure 6-1. Completed DA Form 19
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Step 3: Plot the easting value of t
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Step 7: Connect these two arcs with
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REVIEW EXERCISESNow that you have w
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Figure 6-10. Completed DA Form 1959
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Note: The following material is an
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d. Although Greenwich, England, is
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(3) Lambert Conformal Conic Project
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4-7. Identification of ControlIn or
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For example, if one end of the comp
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horizontal lines, and then repeated
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. To plot the geographic coordinate
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(1) First, determine the correct sp
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(5) Note that for each 5 minutes of
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4-13. Plotting Positions of Control
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5. What is the value of the first f
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PART II - CONSTRUCT MAP PROJECTIONR
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Requirement: Questions 16 through 2
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20. Refer to question 19. From whic
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154Figure 3. Completed DA Form 1959
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LEAVENWORTHU.S. GOVERNMENT PRINTING
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