Surveying ; a manual of practical instruction in the art of plane surveying, including plotting, leveling, triangulation, line running, cross-sectioning, traversing, and other details of field work (1910)
American School of Correspondence, Phillips, Alfred Edward, 1863- [from old catalog] · Chicago, American school of correspondence · leaf 76
-fers from N.5 feet, if any, and enter the final results in the notes. A third case is shown in Fig. 52, iu which the transverseslope is not uniform. The method of procedure is the same as inthe other cases, but the rod should be held at the point where theslope changes in order to find its height… … Fig. .52.calculate the area of the sections with more exactness. At timesa section will be cut partly in rock and partly in earth, forming a 64 PLANE SURVEYING compound section. Each material will, of course, have its ownproper side slope, and the depth and extent of each must be deter-mined hy…
Surveying
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