indago wrote:

- Lay all your 2 x 4's side by side on the floor in your basement.
Then, draw-
- an arrow on each of them going the same way. When you have finished
this
- project, take a look at all the arrows, and all those that are marked
with
- an arrow pointing toward the top are the ones that have the arrow
pointing
- toward the top.
-
- Hope this helps...

I think it be better to stand them on top of each other end upon end.
That way the top of each one would have to be touching the bottom of
the next one. Just make sure you start with the bottom of the first one
on the ground.