Time-dependent service-load behavior of wood floors: analytical model

Abstract A preceding companion paper [1] examined the experimental time-dependent service-load response of wood joist floor systems, including an assessment of time-dependent deflections and load distribution. The results of the experimental program are used herein to develop an analytical model for the time-dependent response of wood joist floors. Time-dependent component (i.e. joist, sheathing and connection) models are developed from component tests. These component models are then integrated into a system model. The focus of this paper is to present the theoretical basis for the time-dependent system model, and illustrate its predictive capabilities. The system model approximates the time-dependent system creep of parallel-member wood systems to an acceptable degree of accuracy. Moreover, the model requires relatively little computer time, thus making it suitable for use in a Monte Carlo simulation