A treatise on surveying ; in which the theory and practice are fully explained (1860)
Alsop, Samuel · Philadelphia, E. C. & J. Biddle & co. · leaf 137
FC CF 240. Second Method.-in CD, run two linesAF and BG. MakeFH in any ratio to HA,and GH in the sameratio to HB. DrawFGC, cutting CD inC. Measure FC andHC. Then AE = AH.FC and HE = -Through H, (Fig. 101,) any point Fig. 101. FHAH.HC … FH4. When both ends are inaccessible. 241. Let AB (Fig. 102) be the in-accessible line. From any con-venient point C, run the lines CAand CB towards A and B, and, byone of the preceding methods, findCA and CB. In CA and CB, orCA and CB produced, take E and D so that CE : CA :: CD : CB. Measure DE.…
Surveying
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