Abstract
This article presents the predictions of the vibrations of light weight timber based floor/ceiling structures using a theoretical model. The model predicts the deformation of the structure by solving the differential equations of each component of the structure, such as the floor board, ceiling panel and the joist beams. An improvement over the existing models is that this model includes the effects of interaction between the floor board and the joist beams namely slippage resistance. The existing models assume either the two components are rigidly joined or completely loose.