The eccentric shift of the loads is implemented only within the 2D-grillage package. Only Z-direction loads (distributed or concentrated) can be applied eccentrically.
An eccentrically applied load describes the shift of the loading axis relative to the cross-section axis in the direction of the member's local Y-axis. This shift can be defined as either a positive or negative value.
The data input for the eccentric shift is presented in the load definition window and grid table, such as "Eccentricity: 0.000 m". The default value of 0.000 m represents an unshifted loading position.
The local eccentric shift of the load is represented on the structure drawing as a pair of loads: the concentrically placed concentrated load and an additional torsional moment appearing due to the eccentricity.
The analysis calculation of the member-located eccentrically placed loading aims to account for the resulting torsional force. When eccentric loads are defined, the advanced analysis option of reduced torsion is neither meaningful nor recommended.