surveying iii (topographic and geodetic surveys) - Modern Prepper

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LESSON 3PRACTICE EXERCISEThe following items will test your grasp of the material covered in this lesson. There is only one correctanswer for each item. When you have completed the exercise, check your answer with the answer keythat follows. If you answer any item incorrectly, study again that part which contains the portioninvolved.1. An actual error in baseline measurements is defined as _________________________________.A. An amount which is mathematically computed to be the error of a single measurementB. The actual error is the amount of deviation of each measurement from the mean of allmeasurements.C. The amount of error that is inherent in the measuring tape at any given degreeD. The amount of error which occurs when traversing over land of highly contrasting relief2. The 30-meter steel tape is standardized by the NBS ___________________________________.A. For each meter of tape on a flat, horizontal surfaceB. In the supported position at the 0-, 15-, and 30-meter pointsC. In the supported position at the 0-, 7.5-, 15.0- and 22.5-meter pointsD. For its overall length (at the 30-meter point) in accuracy3. What is the maximum distance a marking strip or point marking a 50-meter tape end on abaseline can be out of line between the two adjacent marked tape end points?A. 2.5 centimetersB. 15 centimetersC. 10 millimetersD. 4 millimeters4. A survey party is measuring a second-order, Class I baseline and the wind begins to increase. Atwhat point should the taping be halted?A. When the tape bends more than 5 centimeters out of lineB. When the tape bends more than 10 centimeters out of lineC. When the tape bends more than 50 millimeters out of lineD. When the tape bends more than 2 centimeters out of lineEN0593 3-36
5. If there is an experienced forward contact man in a baseline survey party, the party chief may actas the _____________________________________________________________________________.A. Front stretcher manB. Rear contact manC. MiddlemanD. Recorder6. When two thermometer readings are recorded in the field notebook, this indicates a___________________________________________________________________________________.A. Half-tape lengthB. Full-tape length (50 meters)C. SetupD. New station7. When measuring, a tape is seldom supported throughout its length due to___________________________________________________________________________________.A. Irregularities on the surface of the earthB. FrictionC. A much higher or lower temperature on the surface on which it is laidD. Its low coefficient of thermal expansion8. The wild T-3 precision theodolite is a ______________________________________________.A. 0.2 second, direction theodoliteB. 0.2 second, repeating theodoliteC. 2.0 second, direction theodoliteD. 2.0 second, repeating theodolite9. Parallax exists when ____________________________________________________________.A. The instrument is not completely leveledB. You move your eye from side to side and the observed object also movesC. The crosshair appears to move with respect to the observed objectD. The plate level bubble has been in correctly calibrated10. When reading horizontal-circle conditions, the accuracy of the reading is dependant on whatfactor?A. The adjustment of the parallaxB. The illumination of the horizontal circleC. The edged eyepiece of the microscopeD. The making of the coincidence3-37 EN0593
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SUBCOURSEEN0593EDITIONAUNITED STATE
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TERMINAL LEARNING OBJECTIVE:ACTION:
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Part G: Adjusting Precise-Positioni
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PART A - FIGURES OF THE EARTH1-1. T
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Figure 1-2. Flattening Fractiona. T
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1-3. Geoid. In geodesy, precise com
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point in the survey to provide the
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one side of a triangle and all of t
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Figure 1-10. Simple Triangulation N
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observation, contains a light sourc
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of a horizontal rod with a small sp
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The Airy theory, announced by G. B.
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Figure 1-15. Products of the Gravim
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a. If the shape of the earth was ex
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Figure 1-16. Single Astronomic Stat
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Figure 1-17. Astro-Geodetic Deflect
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Figure 1-19. Astro-Geodetic Datum O
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(c) The significance of a gravity-o
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absolute deflections of the vertica
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Figure 1-23. Preferred Datumsa. The
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1-17. The World Geodetic System. Be
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Figure 1-25. Using the Same Referen
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LESSON 1PRACTICE EXERCISEThe follow
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12. Which of the following is assum
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LESSON 1PRACTICE EXERCISEANSWER KEY
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THIS PAGE IS INTENTIONALLY LEFT BLA
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for all military and civilian activ
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i. Additional support for other top
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2-7. Status. At present, topographi
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in both. (North American Datum of 1
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water can impede leveling operation
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A field recording booklet. A single
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PART I - OFFICE WORK2-24. General.
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PART J - SURVEY COMMUNICATION2-28.
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length or side is known, and all th
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second-order, Class I net. The leng
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The number of observations required
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to perform the reconnaissance. Fail
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and cultivated, or fields may have
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e an alphanumeric symbol that is st
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2-53. Intervisibility of Stations.
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station is (K/2) 2 x 0.0676, or one
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Figure 2-8. Similar Triangles Solut
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2-54. Height of Obstructions. It is
Page 92 and 93: authorized to change the name, it s
Page 94 and 95: Figure 2-12. Cells Connected in Par
Page 96 and 97: added as the cells weaken. Three un
Page 98 and 99: Figure 2-16. Construction Details f
Page 100 and 101: 2-60. Wooden Towers. When it become
Page 102 and 103: LESSON 2PRACTICE EXERCISEThe follow
Page 104 and 105: 11. The face of the 5-inch signal l
Page 106 and 107: LESSON 2PRACTICE EXERCISEANSWER KEY
Page 108 and 109: average line in a triangulation sys
Page 110 and 111: 3-4. Slope Measurements. The slope
Page 112 and 113: strip as close as possible to its f
Page 114 and 115: . Sight along the tops of both of t
Page 116 and 117: Column 1. Record the station number
Page 118 and 119: stake to steady it. With the back o
Page 120 and 121: Figure 3-3. DA Form 4446 (Sample of
Page 122 and 123: micrometer in this optical system i
Page 124 and 125: laterally across the front of the e
Page 126 and 127: Figure 3-7. Horizontal Circle and M
Page 128 and 129: out of adjustment. If the index mar
Page 130 and 131: (1) In order to avoid instrumental
Page 132 and 133: location of the vertical circle on
Page 134 and 135: Figure 3-13. Open Traversec. Closed
Page 136 and 137: designate the exact point of refere
Page 138 and 139: example, a line with an azimuth of
Page 140 and 141: When adjusting a traverse that star
Page 144 and 145: 11. The unit of graduation on a hor
Page 148 and 149: THIS PAGE IS INTENTIONALLY LEFT BLA
Page 150 and 151: differential leveling. The theodoli
Page 152 and 153: additional runs are made due to exc
Page 154 and 155: Figure 4-2. Wild N-3 Precision Leve
Page 156 and 157: (8) Loosen the azimuth clamp (13),
Page 158 and 159: 4.7. Miscellaneous Equipment. In ad
Page 160 and 161: (2) To check for gross errors in th
Page 162 and 163: (a) (1) Begin by completing the inf
Page 164 and 165: Set up and level the instrument. Re
Page 166 and 167: Figure 4-8. Sun and Wind Code(5) Th
Page 168 and 169: (10) Enter the interval between the
Page 170 and 171: Figure 4-9. Closed-Circuit River Cr
Page 172 and 173: Figure 4-11. Sample DA Form 5820 (R
Page 174 and 175: is 0. When the telescope is pointed
Page 176 and 177: stations. However, since all statio
Page 178 and 179: a. Complete the heading, as shown.b
Page 180 and 181: a. (1) Enter the date, as in the sa
Page 182 and 183: LESSON 4PRACTICE EXERCISEThe follow
Page 184 and 185: 11. The maximum length of site to o
Page 188 and 189: PART A - GLOBAL POSITIONING SYSTEM
Page 190 and 191: 5-7. Pseudorange. A pseudorange is
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5-15. Number of Pseudorange Observa
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i. Probable Error Measures. The acc
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Table 5-1. Representative GPS Error
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Table 5-2. Carrier Phase Trackinga.
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exercise extreme caution in applyin
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not be designed or performed to ach
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Table 5-3. GPS-S Design, Geometry,
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f. Multiple/Repeat Baseline Connect
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possible ionospheric and tropospher
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Figures 5-4. PDOP Versus Time PlotP
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e. Field Processing and Verificatio
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All carrier phase relative-surveyin
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time spent and the cost of conducti
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movement between occupation sites,
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5-37. General. GPS baseline solutio
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(1) Receiver Time. This technique u
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NOTE: Repeated baselines should be
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5-43. Loop Closure Checks. Postproc
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necessary to determine approximate
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This will ensure that future work w
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may (and usually does) far exceed t
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important in evaluating the overall
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i. Relative GPS baseline standard e
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12. When the networking method is s
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THIS PAGE IS INTENTIONALLY LEFT BLA
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FAR-77 obstructions. Aircraft-movem
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Figure 6-1. Imaginary SurfacesEN059
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Figure 6-3. Approach Surfacesa. Fed
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. Federal Aviation Regulation-77, S
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Table 6-4. Airport Obstruction Accu
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A horizontal scale of 1:12,000 and
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Figure 6-4. Sample DA Form 5821 (Ai
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Figure 6-5. Sample DA Form 5822 (PA
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