I-beam size 30' span

[dstig1]

A full sized pickup is a tight squeeze with a 9' door, I have to fold the mirrors in to make it fit. If I had it to do over, I would make the single doors 10' wide, minimum.

And this is why I went with single 10'W doors in my new house. Our old house had an 18'W double, and it was a PITA to get 2 cars in there decently. If the "randomly directionally challenged" part of the household didn't park her car right then I had trouble getting mine in place and the door open. She had the side where the passenger side was by the post so her odds of hitting it correctly were lower, so I will spot her that, but after 18 yrs....well, you know... Now we have 10' wide single doors with 4' between them. Easy to see that you are in the right place, no chance of ripping off a mirror on the frame (happened 2-3 times at the old place...not by me...) and plenty of room to open doors. The F250 with the tow mirrors is a tight enough fit in these, that I'm not even sure it would go into a 9' door without folding mirrors. I have enough room to do it now, but I do need to watch and keep it closely centered.

 

[crazyal]

Kind of. I use screws so I can remove and adjust if I need to. I attach the joist from whatever side is the easiest to get in in place. I have no interest in how strong it is at that time, just as long as the board stays there long enough for me to come back and install the joist hanger. For something similar to what was shown in the picture, I would probably screw in a 2x4 at the bottom of the ledger board to support the joists, then attach them with a screw, remove the support and then come back and install the joist hangers.

The challenge with installing the joist hangers first is getting them in the exact right position so that when you install the joists, they are all flush with the top of the ledger board. Most boards are not exactly the same depth. A 2x10 is going to be somewhere between 9 to 9 3/8's deep. Most are close to 9 1/4, but there is enough variation to have several joist hangers be off. Then there is the fun of getting the joist into the joist hanger. Some slide right in, others fight you, or they are so loose that you have to remove the joist hanger on one side to get it tight.

I use my table saw. I set it up so that I can cut a couple of inches of each joist so they are all the same thickness. Then I make a block that is also the same thickness to use for putting the hangers at the right height.