Civil Engineering - RCC Structures Design - Discussion

Discussion Forum : RCC Structures Design - Section 5 (Q.No. 3)
3.
As the percentage of steel increases
depth of neutral axis decreases
depth of neutral axis increases
lever arm increases
lever arm decreases
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
13 comments Page 1 of 2.

Ami said:   1 decade ago
With increase in % of steel, section tends to become over reinforced. And concrete tends to fail prior to steel.

Krishna rai said:   1 decade ago
Because if steel is increased the tensile strength is increased manifold so large compressive force is required to counteract this force. Larger comp.force larger nu.depth.

RANJAN PATRA said:   9 years ago
PT% = 100 AST/BD.

Then the answer is option A.

DVS said:   8 years ago
@Ranjan they didn't ask EFFECTIVE DEPTH of the slab.

But they asked DEPTH OF NEUTRAL AXIS.

Ashley said:   8 years ago
D can be correct as NA increase LA decreases.
(1)

DHL said:   8 years ago
Lever arm decreases.

So, Both are true.
(1)

Vroom said:   8 years ago
%steel propotional to NA.
(1)

Suresh chandra said:   7 years ago
Lever arm decrease and Neutral axis increases.
(1)

Sopori said:   7 years ago
If steel is increased in the tensile zone, then the neutral axis will move down in the beam, (depth of N-axis will increase).

Roy said:   7 years ago
Yes, both B&D are correct @Ashley.


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