Chapter 7
A1. Barometric leveling and trigonometric leveling.
A2. (A) 398.303 meters, (B) –46.506 meters. (If your answer to Part A is
incorrect, then you should review Engineering Aid 3, pages 12-18 and
AIII-13.)
A3. (A) 0.08 feet, (B) no.
A4. (A) –0.21 feet, (B) +23.02 feet.
A5. 0 feet.
A6. 1/959 (or 1/1,000).
A7. N47°45´E.
A8. 8,520 square feet.
Chapter 8
A1. Topographic control is the establishment of the horizontal and vertical
control points from which the location and elevation of all topographic
details are determined.
A2. 0.05 distance in miles. No.
A3. (A) 243 feet, (B) +28.1 feet, (C) 202.4 feet.
A4. (A) 566 feet, (B) 327.3 feet.
A5. The vertical distance between adjacent contour lines.
A6. Either a summit or a depression.
Chapter 9
A1. Wingnut B. (Source: Engineering Aid 3, NAVEDTRA 10696.)
A2. Inside the triangle of error.
A3. Progression or plane-table traverse.
A4. Correct H-Dist = 365; Product = + 7.3; DE = +0.6; Elev = 117.3.
A5. For any given area distortion is nearly the same in all directions.
A6. 3MTV.
A7. 1,174 miles.
Chapter 10
A1. Reconnaissance, preliminary, and final-location survey phases.
A2. To make installation, inspection, and maintenance of the line easier and
to lessen the requirement for tree trimming.
A3. The water remaining after absorption, evaporation, and transpiration.
A4. 95.92 feet.
A5. (A) 233.3 square feet, (B) 480.7 cubic yards.
A6. A distance at which the cost of haul equals the cost of excavation.
AVI-3
