INTRODUCTION Serviceability rather than strength is the most critical design requirement for vibration-vulnerable floor construction. Modern floor systems are being designed and constructed with longer spans owing to the need for larger column-free spaces in office and commercial retail buildings. The advances in high-strength materials and lightweight construction technologies are also altering the dynamic characteristics of floor systems. Changes in modern office layouts associated with the removal of full height partitions, heavy filing cabinets, large bookshelves and other architectural components result in a reduction of both load and damping. Hewitt
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