How to calculate the quantity of earthwork for an embankment with mean area method

This construction video tutorial is very useful for quantity surveyors. The tutorial briefly shows how the mean area method is utilized for detecting the earth work.

This method is developed on the basis of the hypothesis that the mid area of a pyramid is half the average area of the ends and the end sections situate in parallel planes.

Here, in this video, the solution is given to the following problem :-

Apply the mean area method and calculate the quantity of earth work toward an embankment that is 150m long and 10m wide at the top. Side slope is 2:1 and depths at each 30m space are 0.60, 1.2, 1.4, 1.6, 1.4, and 1.6m.

The solution is provided in a table format that includes the heads like station, depth, central area = B.d, Area of sides = Sd2, total area B.D+Sd2, Mean Area, Interval, Quantity with two sub headings like cut and fill.

Video Source: SL Khan