I'm looking for I beams 6quot; tall, or less, and 2quot; wide, or less, in lengths of 10ft to 20ftThe vendors have large bridge building structural steel but I'm looking for smaller steel or aluminum stock for roofing projects.
That flange width is a bit smaller that standard steel shapesfor example, a 5 by 10lb/ft S shape has a flange just about 3 wideEven if a local yard doesn't stock it, if you need enough they could probably order itUsually channel in used when sizes get that smallI'm not sure about sizes for standard aluminum extrusions, I believe the proportion tend to be somewhat similar to steel shapesHowever, there are companies that will do short run custom extrusion (as little as 100lbs) of course you have to pay for a die, but if this is custom architecture a thousand dollars or so probably isn't that big of deal.
