
April 5, 2018
Seismic Load Consideration for Retaining Walls
RISAFoundation has the capability to consider seismic loading for retaining walls.
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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RISAFoundation has the capability to consider seismic loading for retaining walls.
We are proud to introduce drastically improved solution times in RISAFoundation version 10.0. This version was updated to include multi-threading/parallel processing capability which will allow it to take advantage of multiple core processors which are becoming extremely common on the market today.
The new TMS 402-16 Masonry Code (formerly designated as ACI 530 and ASCE 5) have been added to RISA-3D v16.0, RISAFloor v12.0 and RISAFoundation v10.0.
Hot rolled steel, wood, and concrete piles are now available in RISAFoundation v10.0. The Pile Definition Editor lets the user input the pile’s properties including the pile’s shape, material, and length. For concrete piles the user has the ability to apply a custom shear and flexural rebar layout...
With Pile Design in RISAFoundation, you have the ability to define the default soil properties for the entire model. But also the Soil Definitions spreadsheet gives you control over all the soil property layers in one location.
The International Code Council just released the 2018 International Building Code (IBC) in August 2017.
The consideration of Live Load reduction is a feature that has been in RISAFloor from the very beginning. However, recent changes to the interface make it significantly easier for you to understand how live load reduction is affecting the design forces in your structure.
In RISAFoundation, you can add a vertical offset for slabs or beams. Traditionally, RISA uses centerline analysis which aligns all elements at their centerline. This is a common structural analysis assumption as the loads will get transferred to the centerline even if there is difference in the...
The CSA A23.3-14 code has been implemented in RISA-3D v15.0, RISAFloor v11.0, and RISAFoundation v9.0.
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