Just thought I'd post a couple pics of the lumber rack I'm building.
It'll be attached to the wall behind it in the pics with 5/8" lead expansion anchors holding 3/8" x 4" lag bolts. (The wall in the background is concrete block, as are most exterior walls here in Hurricane Heaven.)
The lag bolts will go through the horizontals and be spaced at two bolts between each two verticals on the top and bottom rows and one bolt between each two verticals in the middle two rows.
The verticals are spaced 16" OC. The brackets/arms/thingies are made by sandwiching a piece of 2x4 between two pieces of 1/2" plywood. (Actually, I've only built the one so far -- just 23 more to go!) The plywood sides will be bolted to the vertical 2x4s.
Question:
Can any of you engineer types tell me how to figure out how much load this thing can carry? I really don't want it crashing down on me.