Structural · S-8EZ39

Typical Rebar, Hook, Bent and Lap Splice

Materials

Reinforced Concrete

Elements

Reinforcing

Connections

Rebar Splice / Development

About this detail

Standard reinforcement detailing requirements specify bend diameters, hook extensions, and lap splice lengths for various bar sizes. Standard bend diameters measure six times the bar diameter for number 3 through number 8 bars, eight times for number 9 through number 11 bars, and ten times for number 14 through number 18 bars. Standard hooks include a twelve-bar-diameter extension and a four-bar-diameter tail with a two-and-a-half-inch minimum. Ninety-degree and one-hundred-thirty-five-degree bends feature six-bar-diameter or twelve-bar-diameter extensions depending on bar size. Lap splices require sixty-four times the bar diameter for number 3 through number 6 bars, and eighty times for number 7 through number 11 bars, with bars wired together. Closed ties and stirrup hooks maintain a three-inch minimum extension. Nominal bar diameter is designated as d, and all splices unless noted otherwise must be staggered twenty-four inches.

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