Not working
Will not change size of square tube, even after paying for app
Archived App (Last seen on 6 Oct 2025)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
This app assists in designing and validating Hollow Structure Sections according to AISC ASD 9th edition. It calculates stress ratios, allows customization of section sizes and design parameters, and generates detailed calculation reports for email. It also functions as a section properties calculator and weight estimator.
✓Hollow structure section design
✓Unity check calculations
✓Customizable section sizes
✓Calculation report generation
✓Section properties calculator
✓Weight estimation
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What's New in Hollow_
1.6
May 3, 2024
Minor update
1
In-App Purchases
$0.99
AISC 9th edition
Box Design
User reviews
Developer apps
FAQ
What design code does Hollow_ use?
Hollow_ uses the AISC ASD 9th edition 1989 for its design calculations. This standard is widely recognized for structural design.
Can I customize the units in Hollow_?
Yes, Hollow_ offers two design unit options: kN-m or kips-ft. Geometry sizes can also be set in millimeters or inches.
Does Hollow_ calculate section properties?
Yes, Hollow_ includes a function to act as a section properties calculator. It can compute the torsion constant 'J' and estimate beam weight per length.
How does Hollow_ handle calculation reports?
The program compiles calculation reports in a format suitable for standard miscellaneous structure design. These reports can be sent via email directly from the app.
What is the age rating for Hollow_?
Hollow_ has an age rating of 4+, making it suitable for a wide range of users. The app was last updated on May 3, 2024.
What devices does Hollow_ support?
Currently, Hollow_ is supported on iPhone devices. The app was first released on January 16, 2017.
Does Hollow_ have ads?
No, Hollow_ does not contain advertisements. The app is free to download and use, with optional in-app purchases.
What is the user feedback on Hollow_?
Based on the available data, Hollow_ has received 1 rating with an average of 1.0 stars. This indicates a need for further user feedback and potential improvements.