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The slab longitudinal direction is used to denote the orientation of any slabs in the model. Slabs are opened in Eriksson Beam by default. For Eriksson Sync to determine the orientation the longitudinal direction must be designated as either the long or short side of the slab. This setting will also be used when reinforcing a slab from an Eriksson Beam file.
Material properties are pulled over as long as the element's material name is in PSI (5000, 6000, etc).
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