Civil Engineering - Estimating and Costing - Discussion
Discussion Forum : Estimating and Costing - Section 2 (Q.No. 42)
42.
The cross-sectional area of the embankment of a canal fully in embankment in the given figure is
Discussion:
12 comments Page 2 of 2.
Paul said:
7 years ago
What will be the right answer? Please explain it.
Sree said:
7 years ago
The given trapezoid can be divided into one rectangle and two triangles on both sides (to calculate the area).
Tthen for the first trapezoid, rectangular area = b1 * h.
area of both triangles together = s * h(^2).
total area =A1 = (b1*h) + (s*h(^2)).
Like that for second trapezoid, area = A2 = (b2*h)+(s*h^2).
trapezoid area = A1+A2 = (b1*h) + (s*h(^2)) + (b2*h)+(s*h^2).
= (b1+b2)h + 2sh^2.
Tthen for the first trapezoid, rectangular area = b1 * h.
area of both triangles together = s * h(^2).
total area =A1 = (b1*h) + (s*h(^2)).
Like that for second trapezoid, area = A2 = (b2*h)+(s*h^2).
trapezoid area = A1+A2 = (b1*h) + (s*h(^2)) + (b2*h)+(s*h^2).
= (b1+b2)h + 2sh^2.
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