Structural · S-9TZSJ

Reinforcing Bar Bending Detail

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Reinforcing bar bending details define standard bend diameters, hook configurations, and extension lengths for concrete reinforcement. The details specify 90-degree, 135-degree, and 180-degree hooks with minimum extension lengths such as six bar diameters or three inches for 135-degree hooks, and four bar diameters or two and one-half inches for 180-degree hooks. Tables provide specific bend diameters for bar sizes ranging from number three through number eighteen, distinguishing requirements for ties and stirrups from primary vertical and longitudinal bars. Offset bends are dimensioned with a slope ratio of twelve to two for offset bar transitions.

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