This article focuses mainly on the long-term deflection of slabs according to ACI, in an easy way without the confusion that usually accompany this process.
It considers the effect of shrinkage, cracking, and creep.Ĭodes most often specifies limitations for the long-term deflection. On the other side, long-term deflection in a slab or beam in the deformation that happens over a longer period of time. Usually, the immediate deflection will give an indication on the performance of the element under load. First, the short-term deflection or sometimes called immediate deflection, which is the deformation that happens in slab or any element once the load is applied. In this article, we will walk you through the process of checking the long-term deflection of a simple slab using SAFE. SAFE was developed by Computer and Structures, Inc. CSI SAFE ( Slab Analysis by the Finite Element Method) is one of the best tools available for analyzing and designing concrete slabs and/or foundations.
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