Ed, I think your tarp could still collect water. By the looks of it, you better get the center beam in.
Yup, it did hold some water last night but not a 'ton'. I can syphon off whatever I need to in order to keep my work flow happening.
First step will to make the center beam workeable. I have that ability with a strong piece of steel that wasn't going to be used anywhere else so that's the first order of business over the next 2 days. Once that's done, I agree Paul that it will be much more stable. I just need to get to the sunshine and it will be all fine.
Mother nature has provided me with a strong apple tree to help stabalize the tarp. I've put up a 'center post' from within the shed to hopefully help the water shed.....see what I did there?
You can see where the 'center post' is sticking up. That's exactly where the water collected. Right now I believe it will run off that onto the left part which is pretty tight and will run right off. It didn't collect there last night at all.
It's a work in progress with some tweaks that will eventually produce the results I wish for. Fix beam, connect lower beam and upper beam and then we have some stability in the structure while I repair the roof bits.