Civil Engineering Association

SOFT-STOREY BEHAVIOUR IN AN EARTHQUAKE and SAMPLES OF IZMIT-DUZCE

Due to the considerations of occupancy and architectural appearance, especially in the entrance floor
and on one of the intermediate levels, inner sections between columns and outer walls are not
constructed in the way they are done in other storeys or rigidity of the single structures in the storeys
are different. These sections in the buildings are generally used for sales stores, restaurants, bank
branches, installations and lightening. These are labelled as soft storeys in literature. Form the studies
and investigation of the quake results, it is observed that partitioning walls and beam fillings enable
buildings to gain great rigidity. Although irregularities of soft storey have taken place in many
construction codes, it is observed that most of the damage constructions suffered result in this kind of
irregularities. In the current study the focus, depending on the investigations on soft storeys conducted
in quake regions of Izmit and Duzce, was on the investigation of the effect of a soft storey on the
behaviour of a construction. Also solutions were investigated for making the soft storeys in the present
constructions and in the ones to be built resistant to quake.

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