Before revision: 99 (2009) 1483-1485. which the main reasons of this ignorance may be attributed to: (1) lack of the sufficient recorded data on the rotational accelerations; (2) difficulty in presenting a quantitative assessment of the rotational acceleration components for given translational components; (3) complexity in derivation of simplified seismic loading patterns for structures subjected to rotational excitations M. R. Falamarz-Sheikhabadi, M. Ghafory-Ashtiany, Rotational components in structural loading, Soil Dynamics and Earthquake Engineering, Vol.
After revision: 99 (2009) 1483-1485. which main reasons of this ignorance may be attributed to: (1) lack of the sufficient recorded data on the rotational accelerations; (2) difficulty in presenting a quantitative assessment of the rotational acceleration components for given translational components; (3) complexity in derivation of simplified seismic loading patterns for structures subjected to rotational excitations M. R. Falamarz-Sheikhabadi, M. Ghafory-Ashtiany, Rotational components in structural loading, Soil Dynamics and Earthquake Engineering, Vol.