I'm trying to install a non-load bearing basement wall parallel to an I-joist. The tricky part is, how do I run a drywall backer parallel to the I-joist? The top plate is wider than the flange of the i-joist, so I figured I put the edge of the top plate flush with the edge of the interior side of the flange. I saw a diagram for how to do a wall with a regular flange, either putting a 2x4 on the flat and attaching to the top plate, or on its side and attaching to the joist.
If I made it flush like described above, would I be able to nail the 2x4 to the joist flange (would only be able to nail the bottom, not the top). Could I get away with just using a 2x2 running parallel to the flange to act as the nailer?