Civil Engineering - RCC Structures Design - Discussion

Correct ans. is C.

As per IS 456 (Clause 26.2.2.2).

1. When the bar is bent at an angle of at least 90 degree round a bar of at least own dia. abd it continued beyond the end of the curve for length of at least eight diameters (8d).

2.when the bar is bent at an angle of 135 degree round a bar of at least own dia. and it continued beyond the end of the curve for the length of at least six diameters (6d).

3. when the bar is bent through an angle of 180 degree round a bar of at least own dia. and it continued beyond the end of the curve for the length of at least four diameters (4d).

The length of the straight portion of a bar beyond the end of the hook should be at least four times the diameter of the bar to ensure the necessary strength and stability of the structure.

As per IS 456: 2000, The length of the straight portion of a bar beyond the end of the hook should be at least four times the diameter.

The length of the straight portion of the bar beyond the end of the hook should be at least: 4d.

Answer C is correct.

You should be Complete it by 16d but beyond curve should be 4d so the answer is option c.

It is 4times the diameter of the bar. So Answer C is correct.

Option C, 4 times the Dia of the bar is the correct answer.

I am sure the answer should be 4 times dia of the bar.

According to me, the Correct answer is (c).

For hook 4- and 135° 6°and 90°.