Elements of surveying and levelling; with descriptions of the instruments and the necessary tables (1870)
Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes & Company · leaf 245
approximately esti-mated. When the route is finally selected, and the section levelssatisfactorily completed, the exact width of the earthwork, bothin excavations and embankments, is carefully staked out andthe amount of material to be moved in the progress of construc-tion, accurately measured.… … notes appended, which are only partially completed, and whichwill afibrd some examples for practice. SEC. IT.] SECTION LEVELLING. 243 Dist. + s. Ht. of Ins. -S. SurfaceHeights. Eemarks. Bench. 1.032 0 3.2 1 3.8 2 5.3 3 8.9 350 10.3 4 9.0 5 4.8 T.P. 11.815 2.346 T.P. 10.942 2.318 6 9.7 6 6.4 7 2.1…
Surveying
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