Types of Failures in Steel Structures
Type of Failures:
Shearing Failure of Bolt:
Bearing Failure of Plate:
Shear & Bearing Area
Tearing Failure at edge of Plate
Eccentricity of Applied Force:
Plates of lap joint tends to bend.
Bending produces non uniform bearing of the fastener on the plates
Tests showed, failure by tearing through free edge of material will not occur if Le measured parallel to line of applied force is not less dia of bolt multiply ratio of bearing stress to tensile strength of connected part.
Force transmitted by the bolt
Equation ( C ) can be approximated as
So Equation becomes;