Civil Engineering - RCC Structures Design - Discussion
Discussion Forum : RCC Structures Design - Section 3 (Q.No. 1)
1.
If permissible working stresses in steel and concrete are respectively 1400 kg/cm2 and 80 kg/cm2 and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is
Discussion:
25 comments Page 2 of 3.
Alka gautam said:
7 years ago
38.23 is the right answer. I too got the same.
Duhan said:
7 years ago
Answer is 38.22cm.
AKHIL KUMAR said:
7 years ago
The correct answer is 38.22.
Jahir said:
6 years ago
38.23 is correct.
Krishankant singh said:
6 years ago
38.23 is the correct answer.
Anurag said:
6 years ago
Option C is the correct answer.
Mayur said:
6 years ago
What is the lever arm?
(1)
Rajesh sahoo said:
6 years ago
Describe, how the answer is 38.23?
Krishan Gupta said:
5 years ago
The answer is 40cm because here in question the value of C=8 is wrong. M=18 is for M15 concrete and for M15 C=5.
Shubha chakrabortty said:
5 years ago
n(actual neutral axis) =k(design constant) *d, =0.4*460=184mm = 18.4cm.
Permissible working stress=1400 kg/cm2(mild steel),
Then, k = 0.4(madular ratio=18.67),
n/3 = 61.33.
Lever arm = 460 - 61.33(d-n/3),
= 398.67mm,
= 39.86cm
~40cm.
Permissible working stress=1400 kg/cm2(mild steel),
Then, k = 0.4(madular ratio=18.67),
n/3 = 61.33.
Lever arm = 460 - 61.33(d-n/3),
= 398.67mm,
= 39.86cm
~40cm.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers