Normp
Hi Guillaume,

I built a lumber rack similar to the one you are discussing a few years ago.
The individual shelves are cantilevered with angled supports. This works extremely well.

I had the same concern as you have about the whole rack just falling forward from the top. Since most of the load is downwards I still wanted to feel comfortable that I braced the complete lumber rack to the wall and eliminated any danger of it falling forward. What I did was to use lag bolts through the drywall( wall was sheeted already) and directly into the top plate. I also reinforced the top plate into each joist it intersected.

So bottom line, the upper lag bolts into the reinforced top plate instead of the top of the studs did the trick for me. It's been standing for about 8 yrs. now w/o any issues. Like you, I like to over-engineer these things, especially when heavy weights are involved.

BTW. the jointer is long gone. It was in the process of being sold.

Photo attached...