Frequently Asked Questions

What Building Codes Are Used?

February 26th, 2016 | General FAQ

Daystar iStructural.com currently includes the following codes:

  • IBC 2012
  • IBC 2009
  • IBC 2006
  • IBC 2003
  • IBC 2000
  • UBC 1997

What Software Modules Are Available?

September 12th, 2011 | General FAQ

Daystar iStructural.com currently includes the following modules:

Retaining Walls

  • Cantilevered/Restrained Concrete and Masonry Retaining Walls
  • Tapered Cantilevered/Restrained Concrete Retaining Walls
  • Coulomb/Rankine/EFP Soil Loads
  • Water Table Loads
  • Surcharge Loads

Masonry Walls

  • Wall and Parapet Design
  • Allowable Stress & Strength/Slender Wall Design
  • Pinned-Pinned, Fixed-Pinned, Fixed Only Analysis

Masonry Columns

  • Allowable Stress & Strength Design
  • Vertical Point, Moment, Horizontal Point and Horizontal Distributed Loads
  • Pinned-Pinned, Fixed-Pinned, Fixed Only Analysis

Spread footings, combined footings and additional masonry design modules will be added soon.


How Much Does Daystar iStructural.com Cost?

June 20th, 2010 | General FAQ

Please see the account types comparison page for details on the features and pricing of each type of account.

Sign up for an account at www.istructural.com/signup.


Which Browser Works Best?

June 20th, 2010 | General FAQ

The following list is in order starting with the best performance:

  • Chrome
  • Firefox
  • Safari
  • Internet Explorer

You can install any of the above browsers for Daystar iStructural.com and still use Internet Explorer for other websites.


How Do I Get One Of The Non Internet Explorer Browsers?

November 15th, 2009 | General FAQ

Go to the following websites and download them for free:


What Browser Do I Need?

November 15th, 2009 | General FAQ

Daystar iStructural.com supports the following browsers:

  • Internet Explorer 9 and above
  • Firefox 3.0 and above
  • Google Chrome 4 and above
  • Safari 4 and above

What Operating System Do I Need?

November 15th, 2009 | General FAQ

Daystar iStructural.com will work with Windows, Macintosh OS/X and Linux.


What Is Daystar iStructural.com?

November 15th, 2009 | General FAQ

Daystar iStructural.com is a suite of structural engineering software that runs entirely in your browser.  Each module is as full featured as our competitors stand alone software but does not require you to keep track of licenses, installations and updates.  When a new update is ready it is immediately available to you at no extra cost the next time you login.  In addition, you can login from any computer no matter where you are.  No need to be concerned about which computer has the software or data.


What Do You Mean By “Deactivate Your Account”?

November 15th, 2009 | General FAQ

Depending upon the subscription length that you choose, you will be charged monthly or annually as long as your account is active.  If you decide that you will not be using Daystar iStructural.com for a while, you can deactivate your account.  Once your account is deactivated you will not be charged monthly or annual fees but you will still be able to view and print existing calculations.  At any time you can activate your account and have full access again.

Please see the Sign Up page for more information.


If I Decide To Quit What Happens To My Calculations?

November 15th, 2009 | General FAQ

If you decide to deactivate your account, you will still be able to view and print your existing calculations. The only thing you will not be able to do is create new calculations.