Bootstrap 3 will be mobile first. No more separate responsive CSS file. Nice, but what if you don't need / want the resposive features for some reason? So i try to compile Compile Twitter's Bootstrap 3 without resposive features. Read more
Download the none responsive css here.
Use ".col-" as class prefix for all your grid rows now.
In most cases set a fixed width for your containers, like:
<style>.container {width:970px;}</style>
Before start using this first read: http:https://getbootstrap.com/getting-started/#disable-responsive this solution don't reset the @grid-float-breakpoint and don't reduce filesize.