Civil Engineering - RCC Structures Design - Discussion

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.

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

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.

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

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

The Radius is 3D.
Beyond curve 4D.

Option C is correct.

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).

C is the right option.

As per bar schedule, it's minimum 4d.