Well if you're asking if I sketched out how I wanted the joints (simple) and about how wide the top would be (5widths of a 2x6) yes.
Here's the basics -
I used 2x6 by 8 foot straight lumber (eyeball it to make sure its straight)
I got a 1x10 by 6 foot to be a back panel. Again, make sure its straight
I count 78 1/4 x 2-1/2 inch lags but it seems like I used more, as there's not 22 left in the box of 100. Maybe I got gypped.
I count 5 1/4 x 3-1/2 inch lags for the back panel.
That makes 83 1/4 inch standard washers - again, just a box of 100
Miter saw, portable drill, framers square, one big C clamp (since I have no helper), and a socket speeder to bolt it all together.
I'll probably hit it with the belt sander to break the edges on the cut ends a little, but you could do that with a rasp and sandpaper.
There will be a shelf under it... haven't decided just what size or configuration yet. I like the open floorspace, but also want some storage, so might make two columns of shelves (which is why the bottom cross pieces weren't cut flush.
If you really wanted to be anal, you could make this from hardwood like oak and use glue on every joint, and oak dowels to hold it all together. That would be beyond cool, triple the price, and quadruple the time of assembly, having to wait for the glue to set.
I wanted to be able to have a real heavy duty bench. For a lighter duty bench, sub 1x6 for the 2x6 on the five top pieces - but bear in mind you'll still want the five cross pieces to be made from 2x6, so you'll still need an extra 2x6 to get them from (there's a half board leftover anyway and you'll use that too).
Top pieces were cut to six feet. Five of those. From the 2x6's
I cut three 2x6's to 5 feet for the front and back rails on top and back rail on bottom.
All the cross pieces are from whats left over. There is one brace in the middle of the top.
Legs were something like 29.5 or 28.5... I cant remember. It make it match the other benches plus 5/8 inch, so they are even when I retop them. If you want the size I'll measure it.
I seem to recall... the cross pieces are all 24 inches, except the center brace which was cut to fit
The top front is mitered, for cleaner appearance, which also took about 1-1/2 inches off the center brace - since 2x6's are about 1-1/2
Back panel set on before the top was, to insure no gaps. Top sections pressed hard against the back, and the "front" top was drilled and secured with it all tight. The rest were an easy drill and lag in at that point, remaining tight.
Back panel was attached with 3-1/2 inch lags, the rest were all 2-1/2 inch. If you got a speeder for a socket, its makes it very easy to lag it all together.
I'll see if I still got the sketch and post it.