Structural · S-AMHZ5

Reinforcing Bar Bending Standard Hooks and Offsets

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Standard concrete reinforcing bar bending details illustrate requirements for ninety-degree, one hundred eighty-degree, one hundred thirty-five-degree, and forty-five-degree hooks along with bar offsets. Bend diameters (D) are specified as six times bar diameter (d) for size number three through eight, eight times bar diameter for size number nine through eleven, and ten times bar diameter for size number fourteen through eighteen. Extension lengths vary by hook type, including a twelve times bar diameter extension for ninety-degree hooks, four times bar diameter or two and one-half inches minimum for one hundred eighty-degree hooks, and six times bar diameter or four inches minimum for one hundred thirty-five-degree hooks.

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