The passive response control devices include steel bracings, viscous, and viscoelastic dampers. The buildings without and with the passive control devices are modeled as multi-degree of freedom (M-DOF) systems, with the seismic masses lumped at each floor level. The governing differential equations...
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(4a) installed in a factory in a steel building.SOLUTION: A steel horizontal purlin (3) is fixed orthogonally to a steel roof skeleton frame 2 of a roof material 1, the steel roof skeleton frame (2) being installed at a plurality of inclination angles to suit a plurality of inclination ...