Civil Engineering - Estimating and Costing - Discussion
Discussion Forum : Estimating and Costing - Section 1 (Q.No. 4)
4.
The correct prismoidal formula for volume is
D [first area + last area + ∑ Even area + 2 ∑ odd areas]
[first area + last area + 4 ∑ Even area + 2 ∑ odd areas] [first area + last area + 2 ∑ Even area + 4 ∑ odd areas]
[first area + last area + 2 ∑ Even area + 4 ∑ odd areas].Discussion:
30 comments Page 2 of 3.
Lalan said:
7 years ago
Yes, @Rishabh.
In both case C is correct.
In both case C is correct.
Anju said:
7 years ago
B is the right option. I agree.
Rishabh Machiwal said:
7 years ago
Both options B and C are right.
If we take A1, A2, A3.......,An-1, An then option B is right.
If we take A0, A1, A2, A3.....An-1, An then option C is right.
If we take A1, A2, A3.......,An-1, An then option B is right.
If we take A0, A1, A2, A3.....An-1, An then option C is right.
AMZ said:
7 years ago
None of the above. The question lacks explanation of D, presumably equal spacing of areas. Prismoidal formula treats areas as vector ordinates and averages the areas.
In the same way the area of a prism=median area (Top+Bottom)/2*height. V = D/2*[V1 + Vn + 2* (V2+V3+..+Vn-2)].
In the same way the area of a prism=median area (Top+Bottom)/2*height. V = D/2*[V1 + Vn + 2* (V2+V3+..+Vn-2)].
Rangareddy said:
7 years ago
As per my knowledge, option 3 is correct.
Pratik Soni said:
7 years ago
According to B. N. Dutta "C" is correct Answer.
Suryashekhar Vicky said:
7 years ago
option C is right.
Ref: B.N Dutt book.
Ref: B.N Dutt book.
PS111 said:
7 years ago
C is correct.
D/3 *[(1ST AREA+LAST AREA) + 4*(ODD)+ 2*(EVEN)].
D/3 *[(1ST AREA+LAST AREA) + 4*(ODD)+ 2*(EVEN)].
Somya said:
8 years ago
B is correct according to Simpson's 1/3rd formula.
S.Shahin said:
8 years ago
B is correct.
Because here even means v=L/3{ A.+An+4(A1+A3+.....+An-1)+2(A2+A4+......+An-2)}
Here, A = Coross sectional Area.
Because here even means v=L/3{ A.+An+4(A1+A3+.....+An-1)+2(A2+A4+......+An-2)}
Here, A = Coross sectional Area.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers