 | John Woodbridge Davis - 1877 - 116 páginas
...value ; .-. Area Section = ^8b(r' + l' + 2/.)- S/12 + ^c(r' + 1' + 26), or fi@- Area Supposing 10', c' to represent width and centre at next station,...a near approximate of the volume bet. in cu. yds. B@- Vol. - (we+w'c1 + Sb(w + iu')-4:SI?)T™Add two consecutive volumes of equal length by means of... | |
 | Charles Davies - 1883 - 578 páginas
...be expressed by a formula similar to the above ; half the sum of these, multiplied by the distance, D, between, and divided by 27, gives a near approximate of the Tolume in cubic yards ; Vol. = Add two consecutive volumes of equal length by means of the general... | |
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Supposing w', c' to represent width and centre at next .station, the area of its cross-section may be expressed by a formula similar to the above : half the sum of these, multiplied by dist., D, between, and divided by 27, gives a near approximate of... 