One of the unique features of Daystar iStructural.com is the ability to switch from free to paid accounts and back again whenever you wish. Suppose you have a free account and start a project that requires a masonry slender wall design or tapered concrete retaining wall. Simply login and go to the Account page to switch to a paid account. The paid calculation types will be immediately available and you can get to work on your project. Read More »

After a preset period of inactivity Daystar iStructural.com will end the current session. The page showing at the time will still be there but if you try to save, calculate or print you will receive a warning that your session has timed out and that you will need to login. Open a new tab in the same browser and go to the login screen. Read More »