Estimating and Costing - Engineering

Q1:

In the mid-section formula

A The mean depth is the average of depths of two consecutive sections

B The area of mid-sections is calculated by using mean depth

C The volume of the earth work is calculated by multiplying the mid-section area by the distance between the two sections

D The volume of the earth work is calculated by multiplying the mid-section area by the distance between the two original sections

E (a), (b) and (c) of the above.

ANS:E - (a), (b) and (c) of the above.

What is the difference between original section and section?