peachandpapa (and everyone), Thanks - this is really helpful. But I'm curious how you came to do 5 side supports at 7'6" apart rather than, say, 4 supports at 10ft apart. You have previous experience with the latter failing? Is the canvas tarp you're using more like shade cloth (wind-permeable) or m...

Hi all, I've tried long enough to find a thread discussing this, and there must be one, so if you know of it please redirect me. I'm designing a tarp canopy for our camp, a la creativeshelters.com. I'm shooting for a 30ft wide by 100ft long rectangle, flat roofed. My dream is to have as few internal...