Metric - Hook Dimensions For Estimating (mm)
| Standard Hooks | Stirrup and Ties | D* | Seismic Hooks | ||||
| 180° Hook | 90° Hook | 90° Hook | 135º Hook | 135º Hook | |||
| Bar Designation | D | A or G | A or G | A or G | A or G | A or G | |
| #10 [#3] | 60 | 125 | 150 | 105 | 105 | 40 | 110 |
| #13 [#4] | 80 | 150 | 200 | 115 | 115 | 50 | 115 |
| #16 [#5] | 95 | 175 | 250 | 155 | 140 | 65 | 140 |
| #19 [#6] | 115 | 200 | 300 | 305 | 205 | 115 | 205 |
| #22 [#7] | 135 | 250 | 375 | 355 | 130 | 135 | 230 |
| #25 [#8] | 155 | 275 | 425 | 410 | 270 | 155 | 270 |
| #29 [#9] | 240 | 375 | 475 |  |
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| #32 [#10] | 275 | 425 | 550 | ||||
| #36 [#11] | 305 | 475 | 600 | ||||
| #43 [#14] | 465 | 675 | 775 | ||||
| #57 [#18] | 610 | 925 | 1050 | ||||
* Applies to both stirrups and seismic hooks
ref: Caltrans Bridge Design Details
English - Hook Dimensions For Estimating (in)
| Standard Hooks | Stirrup and Ties | D* | Seismic Hooks | ||||
| 180° Hook | 90° Hook | 90° Hook | 135º Hook | 135º Hook | |||
| Bar Designation | D | A or G | A or G | A or G | A or G | A or G | |
| #10 [#3] | 2.25 | 5.00 | 6.00 | 4.00 | 4.00 | 1.25 | 4.25 |
| #13 [#4] | 3.00 | 6.00 | 8.00 | 4.50 | 4.50 | 2.00 | 4.50 |
| #16 [#5] | 3.75 | 7.00 | 10.00 | 6.00 | 5.50 | 2.25 | 5.50 |
| #19 [#6] | 4.50 | 8.00 | 12.00 | 12.00 | 8.00 | 4.50 | 8.00 |
| #22 [#7] | 5.25 | 10.00 | 14.00 | 14.00 | 9.00 | 5.25 | 9.00 |
| #25 [#8] | 6.00 | 11.00 | 16.00 | 16.00 | 10.50 | 6.00 | 10.50 |
| #29 [#9] | 9.50 | 15.00 | 19.00 | |
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| #32 [#10] | 10.75 | 17.00 | 22.00 | ||||
| #36 [#11] | 12.00 | 19.00 | 24.00 | ||||
| #43 [#14] | 18.25 | 27.00 | 31.00 | ||||
| #57 [#18] | 24.00 | 36.00 | 41.00 | ||||
* Applies to both stirrups and seismic hooks
ref: Caltrans Bridge Design Details