Several ways depending on what's available in your area. Most will need a drill and masonary bit to drill a hole through the wood and deep enough into the concrete to install a thunder bolt or red head, this will give you a threaded stud sticking through the bottom plate of the wall to put on a washer and nut. There may also be other systems available in your area but these seem to be the most common around here. Jeffjune02bug said:I want to build a wall in my shed dividing it into two sections. Question is: How do you attach the wall frame to the concrete floor? Thanks!