Analysis Effects
Camber Deflection due to p/s in walls is computed as part of the members total initial bow which is defined as the deflection due to p/s (camber) plus the additional bow defined as input by the user. The total initial bow is used by determining to determine the panels initial locations shape of the panel prior to any restraints being applied.
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The prestressing strands are converted to applied loads acting on the member. At each analysis point an axial load and a point moment is computed and applied to the member. For a beam-spring system these loads are added to each wythe individually. For a system using the % composite method, these loads are computed based on a fully composite section. These internal forces are run on the system applied to a simply supported panel and deflections are computed. The prestressing forces assume 15% losses when computing the camber at erection. This assumed loss is also used for transfer lengths.
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