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 247
e ma-terial to slide down, until the whole slope gradually assumes amuch lower inclination. After a time, however, the tendency to roll or slide is checkedby the friction of the particles themselves, and the slope thusformed will withstand the ordinary effects of sun, wind, andrain. The inclination… … In the diagram, which represents a road-cutting, the ratioof ES to AE, or of FS to BF, is the ratio of slope. In practice, the slope at which earthworks are allowed tostand, vary from 1 to 1, or 45°, (as in very coarse material); to2 to 1, or 26° 34, in very fine sand. * This slope is determined,…
Surveying
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