# Exercises in Surveying for Field Work and Office Work, with Questions for Discussion; Intended for Use in Connection with the Author's Book Plane Surveying

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 edition. Excerpt: ... and accessories, three sight poles, piece of tracing cloth or tracing paper. Directions: 1. Choose three points, A, B and C, visible from a station P to be occupied by a plane-table. The points a, 6, and c should be plotted to represent three visible points. 2. Find the point p corresponding to P by the mechanical solution on p. 329. 3. Check the work by the graphic solution (Bessel's method), p. 330. 4. Repeat the exercise by the trial method (Coast Survey method), p. 332. Suggestions: In this exercise time may be saved if the three given points are plotted before going into the field. For this reason the polygon used in one of the plane-table exercises already given may be chosen for this work, and three of its corners transferred to a clean sheet of paper by pricking through. When the fourth corner has been determined by the three-point method, the map of the whole polygon may be compared with maps made by other methods. Of course, it should be pointed out that when the three-point problem occurs in practice the three points themselves are usually long distances apart. Questions: 1. Explain the mechanical solution of the three-point problem, p. 329. 2. Comment on this method. p. 330. 3. Explain Bessel's method. p. 330. 4. What is the chief objection to Bessel's method? p. 330. 5. How may this difficulty be overcome? p. 330. 6. On what principle is Bessel's solution based? p. 331. 7. Explain Llano's method. p. 331. 8. Explain the Coast Survey method. p. 332. 9. Give rules for guidance in Coast Survey method. p. 332. 10. Explain the Two-point Problem, p. 334. GROUP To. EXERCISES IN TOPOGRAPHIC SURVEYING. The exercises in this group afford practice in practically all of the methods for locating contours that are commonly used in topographic...show more

## Product details

• Paperback | 54 pages
• 189 x 246 x 3mm | 113g
• Miami Fl, United States
• English
• black & white illustrations
• 123666650X
• 9781236666505