Tips & Tricks

December 29, 2025

What’s New for IBC 2024 in RISA: A Closer Look

With RISA’s latest release of RISA-3D v23.0.1, we’re continuing to expand support for IBC 2024, helping engineers stay aligned with the latest building code requirements as adoption accelerates across the U.S.—including federally funded projects. This release builds on v23.0.0 ASCE 7-22 enhancements and adds key material design updates that move RISA further into full IBC 2024 compliance. New Material Design Updates Supporting IBC 2024 The upcoming release introduces several important design code updates referenced by IBC 2024, including: Steel Seismic design per AISC 341-22 Prequalified connections per AISC 358-22 Continued support for AISC 360-22 (16th Edition) steel design Ongoing updates to the hot-rolled shape database, including compatibility with both 15th and 16th Edition steel manuals These updates support modern seismic detailing requirements and ensure consistency with current steel industry standards. Masonry Masonry design per TMS 402-22, aligning with the latest strength and serviceability provisions adopted by IBC 2024. Key updates include: Revisions to shear design equations, including clarified definitions of shear area as outlined in Table 4.4.5, improving consistency and transparency in shear capacity calculations. Updated strength reduction factors for flexure and combined flexure + axial. Unlike previous editions that used a fixed ϕ-factor of 0.9, TMS 402-22 introduces tension-controlled,…

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Updated Shear Contribution for Concrete (Vc) per ACI 318-19
October 29, 2020

Updated Shear Contribution for Concrete (Vc) per ACI 318-19

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.

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WEBINAR: What's New in the RISA Building System
October 15, 2020

WEBINAR: What's New in the RISA Building System

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:

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CD Factor for Wood Hold-Downs
September 15, 2020

CD Factor for Wood Hold-Downs

If you have utilized Hold-Down's in RISA-3D, you have mostly likely noticed that a value of CD is reported for each selection in the database. However, it may not be clear how it is being used?

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How Do Flexible Diaphragms Work on Sloped Roofs?
April 23, 2020

How Do Flexible Diaphragms Work on Sloped Roofs?

RISAFloor supports the use of flexible diaphragms on both flat and sloped roofs. Before reviewing the workflow for utilizing a flexible diaphragm on a sloped roof, it makes sense to review and understand the basic behavior of flexible diaphragms within RISAFloor. To do this, please first review the...

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RISA Steel Building Workshop & Release Party
October 10, 2019

RISA Steel Building Workshop & Release Party

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...

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Vibration Analysis for Steel Joists
August 30, 2019

Vibration Analysis for Steel Joists

RISAFloor v14 includes Steel Joist Vibration Analysis per SJI Technical Digest #5. For more information, check out the video below.

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LRFD Wood Design per AWC-NDS 2015/2018 Codes
August 30, 2019

LRFD Wood Design per AWC-NDS 2015/2018 Codes

Strength Design (LRFD) according to the AWC-NDS 2015/2018 code has been implemented into RISAFloor v14.0. To select this code for your design, simply choose this code from the Codes tab within Global Model Settings.

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Updated Floor Vibration Calculation per AISC Design Guide #11
August 30, 2019

Updated Floor Vibration Calculation per AISC Design Guide #11

RISAFloor v14 now includes floor vibration calculations per the 2nd Edition of AISC Design Guide #11. To select this code for your design, simply choose AISC DG 11 2nd Edition in the Beam Vibrations drop-down from the Codes tab within Global Model Settings.

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RISAFloor & RISA-3D: Two Buildings on the Same Podium
January 17, 2019

RISAFloor & RISA-3D: Two Buildings on the Same Podium

RISAFloor is the RISA Building System’s floor design software which allows users to design with composite decks, elevated concrete slabs and more. When paired with RISA-3D, the two create a complete solution for the analysis and design of multi-story structures, including two buildings on the same...

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