Davies, Charles, 1798-1876 · New York, Cincinnati [etc.] American book company · leaf 293
t (and which in practice may be determined prettycorrectly by the eye), then the horizontal distance must be in-creased by something more than IJ- times 2 feet. When the surface descends, the estimated distance out, fora level surface, should in like manner be diminished. In em-bankments the… … Fig. 148. Diet. Left. Centre Cut. Right. —4. -4.56. A — 4.9 — 6.1 A -6.44 -7.411.1 Figure ].48 represents an embankment cross-section, inwhich, by reason of the small depth of filling, the height ofinstrument is a positive quantity. The centre cut is —4.9 ; reading of the rod at the centre,8.5 ;…
Surveying
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
