Cut the Bottom and Top Plates
Use a chalk line to snap a line on the floor between the columns to indicate the location of the bottom plate.
Cut the bottom and top plates to length. The bottom plate is the pressure-treated 2x4 that makes contact with the concrete. Place the top and bottom plates side by side and face down on the floor. With a speed square, draw a line across both plates every 16". These lines represent the center of your studs. From each of those lines, measure over 3/4" (in the same direction) and draw another line. This line represents the edge of each stud. Draw some X's over the center lines to help show the placement of the studs.
Note: The dimensions of the project determines the amount of studs needed.