So What Is The 960 Grid System?
The 960 Grid System is an effort to streamline web development workflow by providing commonly used dimensions, based on a width of 960 pixels. There are two variants: 12 and 16 columns, which can be used separately or in tandem.
To find out more visit: http://960.gs/
The following video is taken from Nettuts. For more resources, please see the bottom of the page.
Why Use 960BC WordPress Theme?
The 960bc theme is essentially a blank canvas with minimal styling and no images based on the 960 grid system (12 and 16 columns supported) for WordPress developers who want to work within a traditional grid based layout. The typography defaults are based on Richard Rutter’s article “Compose to a Vertical Rhythm”.
960 grid wordpress theme
http://www.videousermanuals.com/bonus/960-blank-canvas-wordpress-theme/