Civil Engineering - GATE Exam Questions - Discussion
Discussion Forum : GATE Exam Questions - Section 7 (Q.No. 7)
7.
It is proposed to widen and strengthen an existing 2-lane NH section as a divided highway. The existing traffic in one direction is 2500 commercial vehicles (CV) per day. The construction will take 1 year. The design CBR of soil subgrade is found to be 5 percent, Given: traffic growth rate for CV = 8 percent, vehicle damage factor = 3.5 (standard axles per CV), design life = 10 years and traffic distribution factor = 0.75. The cumulative standard axles (msa) computed are
Discussion:
5 comments Page 1 of 1.
Sreejith S said:
4 years ago
Option D is correct. I too agree.
Muneera said:
6 years ago
How A = 2500x1.08?
Govind patidar said:
6 years ago
CSA=(365*(((1+r)^n)-1)*A*D*F)/r.
r=8%.
n=10 years.
A=2500*1.08=2700.
D=lane distribution factor.
F=vehicular damage factor.
CSA=(365*(((1+.08)^10)-1)*2700*0.75*3.5)/0.08 = 37.47msa.
So, that option B is correct.
r=8%.
n=10 years.
A=2500*1.08=2700.
D=lane distribution factor.
F=vehicular damage factor.
CSA=(365*(((1+.08)^10)-1)*2700*0.75*3.5)/0.08 = 37.47msa.
So, that option B is correct.
Niva said:
7 years ago
Option B is correct.
Arnab said:
7 years ago
CSA(N) = 365*(((1+r)^n)-1))/r)*A*D*F.
= 365*(((1+.08)^10)-1))/.08)*(2500*2)*0.75*3.5 = 69.39 msa.
r = 8%
n = 10 years
A = 2500*2 (Two direction)
D = distribution factor
F = VDF = 3.5.
Option D is correct.
= 365*(((1+.08)^10)-1))/.08)*(2500*2)*0.75*3.5 = 69.39 msa.
r = 8%
n = 10 years
A = 2500*2 (Two direction)
D = distribution factor
F = VDF = 3.5.
Option D is correct.
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