The theory and practice of surveying. Designed for the use of surveyors and engineers generally, but especially for the use of students in engineering (1886)
Johnson, J. B. (John Butler), 1850-1902 · New York, J. Wiley & sons · leaf 209
coordi-nates. These three methods will be described in detail. * See Appendix A. i8o SURVEYING. I. Area by Triangular Subdivision, 166. By the Use of the Chain Alone.—In Fig.ABCDEF be the corner bound-aries of a tract of land, the sidesbeing straight lines. Measureall the sides and also the… … Fig. S3. where s is the half sum of the three sides a, b, c in each case. For a Check, plot the work from the field-notes. Thus, takeany point as A and draw arcs of circles, with A as the com-mon centre, with the radii AB, AC, AD, AE, and AF taken tothe scale of the plot. From any point on the…
Surveying
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