The length of the straight portion of a bar beyond the end of the hook, should be at least
A. Twice the diameter
B. Thrice the diameter
C. Four times the diameter
D. Seven times the diameter
Answer: Option C
Solution (By Examveda Team)
Reason: As per standard RCC detailing practice (IS 2502/IS 456), a hooked bar must have a straight extension beyond the hook to ensure adequate anchorage and prevent slip.Minimum requirement: The straight portion beyond the end of the hook should be at least 4ϕ, where ϕ is the bar diameter.
Why 4ϕ? This length ensures the bearing and bond developed by the hook is effectively transferred into the concrete without premature pull-out or cracking at the bend.
This Question Belongs to Civil Engineering >> RCC Structures Design
4 times is correct
c is correct answer
C is correct answer
Yes, C is the correct answer.
When hooks are formed in deformed bars, the internal radius of bend should be atleast 3 times the diameter of bar. & The length of the straight bar beyond the end of the curve should be atleast 4 times the diameter of the bar.
C is the correct ans