When its your dollars I think you might look at that steel a bit different.....im not a packrat by any means but at the same time I cannot condone throwing away a $10 a foot piece I have 4-5 foot of. With the cheaper stuff all too often we find ourselves butchering a full stick for a buttload of 2-4" pieces for fixturing. WASTE WASTE WASTE....it is not a labor problem for me, it is simply space and throwing money out the door to make more space. 90% of the material I have was already bought and paid for... I stock nothing, I order for jobs only. Therefore whatever is in stock is pure profit.
Far as what goes to the scrapyard: I separate it specifically myself as well.....there is a huge difference between a ton of steel and 500lbs of copper, SS or aluminum. The labor involved in sorting it is negligible compared to the profit of doing so!
Sorting thru drops can be labor intensive to a point, kinda depends on how they are organized really. A drop tree can be a mess of whatever you threw on it or it can be organized in to types of materials....pipe, angle, channel etc. Unless you have a ton of room to play with it will be a pain to sort shorts according to size with any reasonable method. I reckon it all comes down to workflow and space avaliable to determine what you call scrap and what is not. But the kicker is how efficient you are with what you have....that is the real deal between the successful organizations and the competitors. I think on what it takes for me to make the most of what I have right now, all the time. WHY NOT?
Sorry got off the subject of my own post....it was a bad day. Got all the pieces cut and fabbed for my stick rack, making it all bolt together so I can move it easily later. The bottom legs will hold plate and sheet stock, that's where it will have to go till I get more room.