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What shall be maximum allowed anchorage length of U-type hook in a RC compression member?

What shall be maximum allowed anchorage length of U-type hook in a RC compression member? Correct Answer 16 times diameter of the bar

As per IS 456:2000,

A standard hook has an anchorage value equivalent to a straight length of 16ϕ.

The anchorage value of standard U-type hook shall be 16 times the diameter of the bar. 

The anchorage value of standard bend shall be considered as 4 times the diameter of the bar for each 45o bend subject to a maximum value of 16 times the diameter of the bar.

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