In wood shear wall design, connection hardware plays a critical role in the performance of the lateral system. As manufacturers develop stronger and more efficient solutions, structural engineering software must stay aligned so engineers can evaluate these products using the most current design data.
The latest release of LAVA structural engineering software now includes support for the HDUE™ hold-down from Simpson Strong-Tie®, giving engineers access to the newest generation of hold-down hardware directly within their shear wall design workflow.
A Next-Generation Replacement for the Industry Standard
The HDUE™ holdown was developed by Simpson Strong-Tie as a one-to-one replacement for the widely used HDU series, which has long been an industry standard for securing shear wall end studs to foundations.

Key Features of the HDUE™
The HDUE introduces several design enhancements intended to improve both structural performance and installation efficiency.
Improved Strength Performance
Testing has demonstrated that HDUE holdowns meet or exceed the strength of the previous HDU series.
Angled Fasteners
Angled fastener installation increases load transfer efficiency and connection capacity.
Extruded Seat Design
The extruded seat improves load distribution and enhances the strength of the connection.
These improvements allow engineers to design shear wall connections that support the demands of modern wood buildings, including multi-story construction.
HDUE Now Included in LAVA
With the latest update, LAVA now includes the HDUE hold-down series with current manufacturer values, ensuring engineers can design with the latest hardware available in the market.
This allows users to:
• Select HDUE hold-downs directly within the shear wall design interface
• Evaluate overturning forces using updated hardware capacities
• Update models quickly as new hardware options become available
Because LAVA models the entire wood structure, engineers can immediately see how hold-down selections interact with the broader lateral system and load path.
Keeping Engineering Software Aligned with the Industry
As connection technology evolves, structural engineering tools must evolve with it. Incorporating the Simpson Strong-Tie HDUE hold-down series into LAVA ensures engineers have access to modern hardware options that reflect the latest developments in wood construction.
Questions? Contact us at info@cbs2llc.com

