Hello all, just stumbled on this page - and I'm currently looking to build a lightweight door / awning for my shop. I was going to use Unistrut, but I'm now considering 3/4" emt....I will cover the door with a thick tarp like material. I want the door to swing up and mount as a awning. This is a very large door and my main concern with emt is strength. What do you think of this design, using this product?