Why doesn’t STU have a final version yet, and what can it do today?
In the world of structural design, time is one of the most critical competitive advantages.
Today, STU (Structify Ultra) is available exclusively to members of the STU Founders Club—a limited, special, and fully functional version that helps structural engineers deliver projects faster, more accurately, and more economically.
The key question is:
What exactly does STU do today, and why aren’t all features fully released yet?
In this article, we clearly explain:
- What capabilities STU offers today
- Which features are currently under development
- Which responsibilities still belong to the structural engineer
- Why STU is not a replacement for ETABS
- And why using today’s version of STU is a smart decision for an engineer’s professional future
Current Capabilities of STU
(Active, tested, and usable in real projects)
In its current version, STU delivers three fully operational core capabilities:
1️⃣ Column Dimension Optimization
STU evaluates thousands of different column dimension combinations and layouts to determine dimensions that:
- Fully comply with design code requirements
- Are economically optimized
- Provide acceptable responses in terms of story drift and torsional behavior
This process allows engineers to reach economical column dimensions in a very short time—a task that can otherwise take days or even weeks when done manually.
2️⃣ Story Drift Response and Control
STU calculates lateral story drift under conventional loading conditions and converges to a structural configuration that:
- Ensures member strength requirements
- Keeps drift values within allowable code limits
In other words, the final design is not only safe, but also reliable in lateral performance.
3️⃣ Structural Torsion Evaluation and Control
Global and relative torsion are evaluated in accordance with Iranian Codes Chapters 6 & 9 and Standard 2800.
STU calculates:
- Maximum story drift
- Average drift per story
- Torsional irregularity indices
During the optimization process, STU adjusts column dimensions to reduce the torsional ratio to an acceptable range (typically below 1.2), ensuring realistic and stable structural behavior.
Capabilities Under Development
The core engine of STU is complete, while advanced features are being added progressively. Key items in the development roadmap include:
- Response spectrum dynamic analysis
- Beam design and integration of beam dimensions into the optimization process
- Completion of moment-resisting frame design
(joint panel checks, strong-column–weak-beam criteria, etc.) - Shear wall systems and dual structural systems
- Steel structure design
- Advanced report generator
- Integration with SAFE and SAP
These features are released weekly or monthly, following a transparent and structured roadmap.
📌 Suggested image placeholder: STU Development Roadmap
Processes Fully Automated by STU Today
🔹 ۱) Structural Design & Optimization Automation
Evaluation of thousands of column layouts and generation of an economical, optimized structural scheme.
🔹 ۲) Active Code-Based Checks
Strength checks for columns, lateral drift control, and torsional behavior evaluation according to code provisions.
🔹 ۳) Engineering Reports Visualization
Drift, torsion, and proposed column section reports are directly viewable within the software.
🔹 ۴) Output Transfer to ETABS
With a single command, final section properties are transferred to ETABS and assigned to structural elements.
🔹 ۵) AI-Assisted Initial Proposals
AI in STU does not make final decisions.
It provides intelligent initial suggestions—the final decision always belongs to the engineer.
What STU Does Not Do
(Responsibilities that remain with the engineer)
- Final engineering judgment and design approval
- Architectural constraints, openings, and constructability checks
- Complex nonlinear behavior and special structural models
- Fine-tuning of code parameters
- Final checks and foundation design
Why STU Is Not a Replacement for ETABS
- ETABS → Final structural analysis and verification tool
- STU → Design automation and optimization platform
Result:
STU reduces structural design time from several weeks to less than one day and currently automates around 50% of the full optimization workflow.
ETABS remains the reference for final verification and executive design approval.
Current Limitations (Transparent & Honest)
- Engineer judgment is still essential for highly complex plans
- Not suitable for special systems such as seismic isolation
- Steel structure design is not yet active
- Full moment frame and dual systems are still under development
- Advanced report generator is not ready
(reports are currently viewable inside the software)
Why Using Today’s Version of STU Makes Sense
STU is not purchased because it is “a new software.”
It is chosen because it frees hours and days of an engineer’s time.
The core engine is ready—and today it already:
- Significantly accelerates structural design
- Automates a major portion of the optimization process
- Becomes more powerful every month as new capabilities are added
FAQ — Frequently Asked Questions
❓ What does the current version of STU cover?
Concrete moment frame column optimization, drift control, and torsional checks.
❓ Which features are not available yet?
Beam design, shear walls, dual systems, and steel structure design.
❓ Is STU a replacement for ETABS?
No. STU complements ETABS, and its output is transferred to ETABS for final checks.
❓ Who is responsible for the final design?
Always the structural engineer. STU only accelerates and optimizes the process.
❓ Is STU usable in real projects?
Yes. It is currently used in real projects, including large and irregular plans.
❓ Are updates free?
Yes. For members of the STU Founders Club, all future updates are free.