Civil Engineering - Estimating and Costing - Discussion
Discussion Forum : Estimating and Costing - Section 2 (Q.No. 32)
32.
The ground surface slopes 1 in 50 along a proposed railway embankment 150 m in length. The height of the embankment at zero chainage is 0.5 m, the width is 11 m and side slopes 2:1. If the falling gradient of the embankment is 1 in 150, the quantity of the earthwork calculated by prismoidal formula, is
Discussion:
17 comments Page 2 of 2.
Santosh said:
5 years ago
Please explain the solution clearly.
Biswajit Mohanty said:
5 years ago
I solved this problem using prismoidal formula answer will be 3250 cum i.e. option A.
(1)
Irfan said:
6 years ago
Not getting it, please solve it clearly.
Raj said:
6 years ago
Please explain clearly.
Rishabh Machiwal said:
7 years ago
The correct Answer is option A.
Anirban said:
9 years ago
Can anyone solve clearly?
Eng.RAJ said:
1 decade ago
Prismoidal formula = L/6 *( A1+A2+4AM).
Where,
A1= Cross sectional area at 1 end = Bd1+Sd1*d1 - Sqm.
A2= Cross sectional area at another end = Bd2+Sd2*d2 - Sqm.
AM= Cross sectional area at middle = Bdm+Sdm*dm - Sqm.
dm= (d1+d2)/2 - m.
Where d1= depth at starting - m.
d2= depth at ending - m.
L= length of the section - m.
Where,
A1= Cross sectional area at 1 end = Bd1+Sd1*d1 - Sqm.
A2= Cross sectional area at another end = Bd2+Sd2*d2 - Sqm.
AM= Cross sectional area at middle = Bdm+Sdm*dm - Sqm.
dm= (d1+d2)/2 - m.
Where d1= depth at starting - m.
d2= depth at ending - m.
L= length of the section - m.
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