
October 30, 2020
Concrete Design according to ACI 318-19 Now Available
The new ACI 318-19 concrete code has been implemented into RISA-3D v19, RISAFloor v15, RISAFoundation v13 and RISA-2D v19.
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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The new ACI 318-19 concrete code has been implemented into RISA-3D v19, RISAFloor v15, RISAFoundation v13 and RISA-2D v19.
With the release of RISAFoundation v13, you now have the ability to transfer Response Spectra Analysis reactions from RISA-3D v19. RISAFoundation now also includes additional seismic options that can be considered in the generation of Load Combinations.
The new ACI 318-19 code has been implemented into RISA-3D v19, RISAFloor v15, and RISAFoundation v13. One of the biggest changes between the ACI 318-14 code and the ACI 318-19 code is the shear contribution provided by the concrete, Vc.
Recent tests and analytical results for concrete columns have indicated that considering shear along each centroidal axis independently can be unconservative. Therefore current versions of RISA-3D, RISAFloor and RISAFoundation have included the consideration for the interaction of shear forces...
Watch the recording of our webinar to learn how new versions of RISA-3D, RISAFloor, RISAFoundation and RISAConnection provide users with expanded design capabilities, improved product integration and new features including:
In this video, we’ll take a look at the modeling and analysis of a mat slab in RISAFoundation. We’ll specify design parameters and soil properties to be able to obtain reinforcement design and view soil pressure contour diagrams.
Last week, RISA held its final Steel Building Workshop at the Aquarium of the Pacific in Long Beach, CA. The Steel Building Workshop series, spanned 7 cities over the past year and gave engineers a first hand look at how the RISA Building System can be used to design a real world project from start...
RISAFoundation v12 includes mat slab, concrete beam and pedestal design according to Eurocode 2. For more information, check out the video below.
RISAFoundation has the ability to create a single layer of reinforcement anywhere in a slab. This improvement allows for a more straightforward design of thin, lightly loaded slab-on-grade where two layers of reinforcement (top/bottom) would be unnecessary. In order to add a single layer of...
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