2.3 Analysis of Precast DiaphragmsThe current design practice for diaphragms is based onthe seam connection capacity. Therefore, with estimates ofthe strength of the seam connections, the analysis of thediaphragm is possible. In order to simplify the analysisprocedures the following assumptions are generally made [19]:• the panels initially remain in the linear range,• all the nonlinear deformations occur first in the edgezone connections, and• the horizontal panel systems (slabs) are usually rigid.The magnitude of the horizontal unit in-plane shearforce. Vu, is calculated according to the shear stress formula
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