Ultimate Strength of Weld Groups.xls
This spreadsheet is using the Instantenious Center of Rotation Method to determine shear capacity of weld group. This method is described in LRFD Code (2nd Edition, Volume II, p. 8-154). In theory, the weld group rotates around IC, and the displacements of each unit-weld element is proportional to the distance to instantaneous centre.
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