Joist3D is designed to assist in the creation of contract documents and 3D models in seconds.

Draw a line to represent the top chord of the Bar Joist.

Select a Bar Joist size from the Joist dialog box.

Select the line. 

After the 3D bar joist is created it can be arrayed as one object.

Watch the tutorial from the: link

The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. OR, simply double-click the downloaded installer to install the app/plugin. You may need to restart the Autodesk product to activate the app/plug-in. To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. OR, click Control Panel > Programs > Programs and Features (Windows 7/8.1/10/11) and uninstall as you would any other application from your system.

You have 15 days to activate the software. When running in non-activated mode this dialog will only appear once the first time the program is executed in a new or existing drawing which indicates the number of Days Remaining before the program stops. Until you are ready to activate the software, you can run the software in the Non-Activated mode before it expires.

To activate the software, when you open a new or existing drawing a dialog appears prompting you to press the "OK" button to Activate Now. This takes you to the SoftDraft Activation dialog showing your License Code and an edit box for you to enter the License Key.

To receive your License Key, click in the License Code edit box, then copy the License Code. To avoid mistakes, we suggest that you copy it from this dialog and paste it into an email, instead of entering it with the keyboard, then send it to support@softdraft.com 
 
Please include the name the app was purchased under and the company name. After we receive the email we will send the License Key back, usually within 24 hours, for you to enter into the dialog.  Copy the License Key from the email into the License Key edit box area of the Activation dialog, then click "OK" to close the dialog.

Not for use with Autodesk® AutoCAD LT® version.