| dc.description.abstract | Flat slab structure are more convenient, economical and provide better architectural visibility
over conventional slab structure. But flat slab structures are flexible in nature and thus pose a
threat to the safety of the structure which brings us to find a method to overcome this
disadvantage. Therefore, perimeter beams are provided which imparts rigidity to the structure.
This paper focuses on the comparative study of conventional slab structure to flat slab structure
having perimeter beams.
In this study, ETABS software is used for the analysis of different structures in high seismic zones
of Mymensingh (0.36) in Bangladesh having G+6 and G+11 storeys. The models taken in this
study have rectangular shape configuration. On the basis the analysis results, the paper discusses
the distinctions of structure’s behavior under different slab in terms of maximum storey
displacement, maximum storey drift and storey stiffness. The storey displacement of flat slab is
approximately three times than conventional slab and two times than flat slab with perimeter
beam for G+6 storey and two times than conventional slab and one-half times than flat slab with
perimeter beam for G+11 storey. The storey drift is also same as storey displacement.
The stiffness of conventional slab supported structure is approximately four times than flat slab
and two times than flat slab with perimeter beam for G+6 storey. The stiffness of conventional
slab supported structure is approximately three times than flat slab and two times than flat slab
with perimeter beam for G+11 storey. This is due to the conventional slab structure has a greater
stiffness than flat slab structure and flat slab with perimeter beam structure. Lastly three data
analyze of the three types of buildings showed that the conventional slab performed best in all
three cases of displacement, drift and stiffness. But the flat slab with perimeter beam is giving
satisfactory results. Therefore, the idea of flat slab with perimeter beam can be developed in those
places where it is necessary to give flat slab in the Earthquake zone.
KEYWORDS: Flat Slab, Conventional Slab, Seismic Analysis, Perimeter Beams, Seismic Zones,
ETAB | en_US |
