Analysis of Frames with Floating Columns

The construction of high-rise buildings with floating columns has become common in urban India to create open spaces and aesthetic designs. Floating columns, resting on beams instead of extending to the foundation, cause discontinuities in the load path, affecting seismic performance. This study analyzes a G+14 RC building with internal, external, and alternate-level floating columns using ETABS to evaluate displacement, axial and shear forces, moments, and torsion. Results show internal and external floating columns increase torsion and axial forces, while alternate-level floating columns reduce torsion. Moments rise at corner columns but may reduce at intermediate columns. Displacements and material quantities increase due to load redistribution. Proper design of transfer girders, connections, and placement of floating columns is essential for safety and economy. The study highlights that floating columns offer architectural flexibility but require careful seismic design to prevent structural vulnerability.