Whether a structure has passed a limit state is really a matter of perception. As far as the ultimate limit state is concerned, the perception is technical, and there are sets of rules and regulations which are established by building codes. However, in the case of serviceability limit the perception is often non-technical, as they involve the judgments and anticipations of occupants. As a consequence, serviceability limits in general have not been codified since desirable limits frequently alter from application to application. Hence, they remain a matter of contractual agreement between the owner and designer, and thus are not specified in the building codes.
The purpose of the current project will be to explore and gather the history of serviceability criteria used for various types of structures. Design deflection and vibration criteria will be relaxed by increasing the floor span and reducing the member size, and the likely effects will be perceived. The paper will later look into possible techniques used for improving structural stiffness without incurring additional cost and materials.
The objectives of this study are: to gain better understanding of structural serviceability performance needs of each