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. 1903 Excerpt: ...43.25: 5 = 0.01: x. Area = 8.08 acres. The first station in the field notes is D, but we rearrange the numbers in the tablet so that A stands first. The northings and southings balance, but the eastings exceed the westings by 1 link. We apply the correction to the westing 4.79 (the distance DE being in doubt), making ...
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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. 1903 Excerpt: ...43.25: 5 = 0.01: x. Area = 8.08 acres. The first station in the field notes is D, but we rearrange the numbers in the tablet so that A stands first. The northings and southings balance, but the eastings exceed the westings by 1 link. We apply the correction to the westing 4.79 (the distance DE being in doubt), making it 4.80, and write the correction. In practice, the corrected numbers are written in red ink, and often all the latitudes and departures are rewritten in four additional columns, headed, respectively, N', S', E', W. Supplying Omissions. If for any reason the bearing and the length of any side do not appear in the field notes, the latitude and departure of this side may be found in the following manner: Find the latitudes and departures of the other sides as usual. The difference between the northings and southings gives the northing or southing of the unknown side, and the difference between the eastings and westings gives the easting or westing of the unknown side. If the length and the bearing of the unknown side are desired, they may be found by solving the right triangle, whose sides are the latitude and departure found by the method just explained, and whose hypotenuse is the length required. Obstructions. If the end of a line is not visible from its beginning, or if the line is inaccessible, its length and bearing may be found as follows: By means of a random line (p. 8). When it is impossible to run a random line, which is frequently the case on account of the extent of the obstruction, the following method may be used: Let AB (Fig. 40) represent an inaccessible line whose extremities A and B only are known, and B invisible from A. Set flagstaffs at convenient points, C and D. Find the bearings and lengths of AC, CD, and DB, and then pro...
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Add this copy of Surveying and Tables to cart. $12.00, good condition, Sold by Pepper's Old Books rated 3.0 out of 5 stars, ships from Hanson, KY, UNITED STATES, published 1906 by Ginn & Co.
Add this copy of Surveying and Tables to cart. $38.51, new condition, Sold by Media Smart rated 4.0 out of 5 stars, ships from Hawthorne, CA, UNITED STATES, published 2016 by Wentworth Press.
Add this copy of Surveying and Tables to cart. $58.41, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2016 by Palala Press.
