On Fri, 16 Feb 2007 15:35:31 -0800, John E.
wrote:

Thus spake Goedjn:

Yes. Home depot sells them as speed squares.

Yeah, that's what it reminds me of...

I'd be a bit surprised if you really need as
heavy a shelf bracket as you seem to think
you do. And if you DO need it, I'd be
a bit concerned out the ability of the wall
behind it to support it cantilevered out
like that. How about some numbers?

Maybe max 50 lbs per linear 3' of shelf. Probably won't reach that max.

One 8" shelf, one 12", one maybe 14" or so, one above the other.
Drill and anchor into concrete wall a 2x4 or 2x6.

One vertical 2x and a "speed square bracket every 3'.

Just first rough plan off the top of the head.



Regular old stamped sheetmetal shelf brackets
out of the bin at a hardware store ought to be
good for around 100 pounds each.