A few boards leaning against the wall or a few stacks around the shop can really eat up space quickly and to an extent can be a safety hazard. A good lumber rack frees up floor space and helps you figure out what you really have.
At my old shop I built a lumber rack out of 4x4 and 3/4" pipe. This time I wanted to try something a bit different. This rack is nearly a one for one copy that The Wood Whisperer (Marc) shows the construction of in one of his videos (144 - Racking My Brain - lumber Rack) minus the sheet good storage. I changed the overall size to fit a 12' wall in the back of my workshop.
The main rack is constructed of (2x) cleats and (2x) uprights. First, the stud locations are laid out and the cleats lag screwed to the studs at the location where the bottom of the rack will be. Uprights are installed with counter sunk lag screws onto every other stud.
The shelf supports are built out of a sandwich of plywood and 2x4. The ply wood skins extend passed the 2x4 center and act as the attachment point onto the uprights. Each shelf support is made from two pieces of plywood measuring 5"x16" and one 2x4 that is 14" long. The skins get an taper cut on the bottom edge so that the front edge measures 3-1/2" to match the 2x4. These get glued and screwed together and then installed on the uprights with screws using a level as I moved down the rack to keep them inline with each other. For the time being I've installed 3 rows which barely clears the top of my dust collector. Once I've completed the miter saw station I will install the final row.
a bin for scraps
With a place to store longer boards out of the way I turned my attention to building a bin to store shorter boards; this bin also came from Marc's video.
Start by installing a few cleats on the wall that line up with the studs. I squeezed mine up as close as possible to my dust collector to maximize space.
Then, two sheets of 3/4" playwood 2'x4' get the top from corner cut off and are screwed to the cleats and a toe kick installed to keep the sides from moving.
Before installing I also cut out the bottom back corner of both sides to allow a space for future dust collection pipe to run over to a future miter saw station.
Finally a scrap peace of hardboard I had laying around goes into the bottom in order to protect the end grain from damp concrete.