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 1 of 2.
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.
Anirban said:
9 years ago
Can anyone solve clearly?
Rishabh Machiwal said:
7 years ago
The correct Answer is option A.
Raj said:
6 years ago
Please explain clearly.
Irfan said:
6 years ago
Not getting it, please solve it clearly.
Biswajit Mohanty said:
5 years ago
I solved this problem using prismoidal formula answer will be 3250 cum i.e. option A.
(1)
Santosh said:
5 years ago
Please explain the solution clearly.
Paramjit Paul said:
5 years ago
Can anyone solve it in detail?
(1)
SUMIT KUMAR said:
5 years ago
3250 is the right answer.
(1)
Tarun said:
4 years ago
B is right ans. The first trapezoidal area will be 5.75 with height .5m and second one's area will be 15.3125 with height 1.25m at 37.5m away.
A3 will be 26. Height 2m
A4 will be 28 Height 3m
A5 will be 60 Height 4m
Slope 2/75.
Area is calculated as trapezoid base width will be;
2 Height+ width.
A3 will be 26. Height 2m
A4 will be 28 Height 3m
A5 will be 60 Height 4m
Slope 2/75.
Area is calculated as trapezoid base width will be;
2 Height+ width.
(1)
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