Estimating and Costing
If B is the width of formation, d is the height of the embankment, side slope S : 1, for a highway with no transverse slope, the area of cross-section is

B × d - Sd1/2
Bd + Sd2
½ (Bd + Sd2)
B + d + Sd

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Estimating and Costing
In the mid-section formula

All of these
The mean depth is the average of depths of two consecutive sections
The volume of the earth work is calculated by multiplying the mid-section area by the distance between the two original sections
The area of mid-sections is calculated by using mean depth

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