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
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Seismic design per AISC 341-22
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Prequalified connections per AISC 358-22
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Continued support for AISC 360-22 (16th Edition) steel design
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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
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Masonry design per TMS 402-22, aligning with the latest strength and serviceability provisions adopted by IBC 2024.
Key updates include:
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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.
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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, transition, and compression-controlled sections, similar to the approach engineers are familiar with in ACI 318.
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More stringent lintel requirements. TMS 402-22 now requires masonry lintels to be tension-controlled.
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RISA-3D and RISAFloor provide built-in guardrails to:
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Verify when a lintel satisfies tension-controlled behavior, and
Clearly warn engineers when a tension-controlled design is not achievable based on the selected wall design rules—making noncompliance with the new requirements immediately visible.
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Seismic design updates, reflecting revised detailing and capacity checks introduced in TMS 402-22.
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Minor refinements to ductility requirements for special boundary elements, ensuring closer alignment with current seismic detailing expectations.
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Wood
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Wood design per NDS 2024
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Compatibility with both the 2018 and 2024 NDS Supplements, allowing flexibility for projects transitioning between code cycles.
Together, these additions strengthen RISA’s multi-material design capabilities under the IBC 2024 umbrella.
Why IBC 2024 Matters Now
As of February 2025, the Unified Facilities Criteria (UFC) has officially adopted IBC 2024 for both building and structural codes. This means that most U.S. government-funded projects now require IBC 2024 compliance, making timely software support increasingly important for engineering firms working in the public sector.
Staying Ahead with RISA