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AISC REFERENCE

AISC Cold-Bending Radius.

Minimum inside radius for cold-bending a plate, by steel designation and thickness.

Values are for bend lines perpendicular to the direction of final rolling. If bend lines are parallel to the final rolling direction, multiply the values by 1.5.

Enter the plate thickness.

AISC Table 10-13, minimum inside radius for cold-bending. The same in both editions.

How to use it

  1. Pick the steel designation, for example A36 or A992.
  2. Enter the plate thickness in inches. Fractions are fine: 3/4 or 1 1/4.
  3. Choose whether the bend line is perpendicular or parallel to the direction of final rolling.
  4. Read the minimum inside radius, plus the thickness bracket and multiplier used.

Example

A36 plate 3/4" thick with a perpendicular bend line: multiplier 1-1/2 t, so the minimum inside radius is 1-1/8". With a parallel bend line it is 1-11/16".

Source and notes

  • Source: AISC Table 10-13, minimum inside radius for cold-bending. The table gives a multiple of the plate thickness, and it is the same in both editions.
  • The table's values are for bend lines perpendicular to the direction of final rolling. For parallel bend lines the radius is multiplied by 1.5.
  • The AISC tables belong to the American Institute of Steel Construction. They are shown here as a quick reference and may not match the edition or addenda you are required to use.
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