8/18/2019 Earthwork Volume by Simpson's Rule - Civil Engineering Applications and Tips.pdf

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10/1/2015 Earthwork Volume by Simpson's Rule - Civil Engineering Applications and Tips

http://www.howtoexcel.info/Civil_Engineering/Earthwork_Volume.htm

 

Earthwork Volume using Simpson's RuleStep by step procedure to find out the volume of earthwork using Simpson's Rule

 

This article is about using Simpson's rule to find out the quantity of earthwork using contour maps. The procedure is explained with the help of an example. In the example given below the map is divided in to 6 horizontal and 6 vertical grids each of 5m interval. The reduced levels are given at the intersections.

 

Suppose the final level for filling is 24.1m. Then the required depth of filling at each point is as given in the table below 

The area on the side of each grid can be found out as follows

 

Each side can be considered as a trapezoid. Hence the area of each side 

eg: (0.98+0.97)/2 x 5 = 4.875

8/18/2019 Earthwork Volume by Simpson's Rule - Civil Engineering Applications and Tips.pdf

2/2

10/1/2015 Earthwork Volume by Simpson's Rule - Civil Engineering Applications and Tips

http://www.howtoexcel.info/Civil_Engineering/Earthwork_Volume.htm

 (0.80+0.80)/2 x 5 = 4.000

  Now the volume according to Simpson's rule is as follows 

eg: (4.875+3.375)=8.25 4 x (4+3.75+3.925)=46.7 2 x (3.575+3.875)=21.65 Total = 76.6 

Total earth filling volume = 373.83 x (d/3)

 =373.83 x (5/3) = 623 M3

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