May 13, 2025

Transfer In/Out: Controlling Wall Opening Load Redistribution in RISA-3D

The Transfer In and Transfer Out checkboxes in RISA’s Wall Design Rules spreadsheet help you control how forces from regions above and below openings are redistributed during design. Whether you're excluding precast elements or ignoring small segments over openings, these settings let you tailor the force path to match real-world behavior. What Do "Transfer In" and "Transfer Out" Actually Do? In RISA, wall panels automatically generate design regions above and below openings, in addition to the full-height wall segments. Transfer In → Applies to in-plane loads (axial/shear). When checked, the in-plane forces from the small regions above and below openings are transferred into adjacent full-height wall regions. Transfer Out → Applies to out-of-plane loads (bending/shear). When checked, out-of-plane forces from regions above/below openings are transferred to adjacent full-height regions. This includes: Line loads (like from floors or roofs) located directly above the region The self-weight of the wall segment for that region These forces are added into the adjacent region’s total force calculation for design. Important Note: This is a design-level adjustment only. It does not affect the stiffness matrix used in analysis. The stiffness from all regions remains in place during solution. After solving, the forces collected in the…

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