As Paul Harvey would say .... here's the rest of the story ::
A couple of years ago I bought a truckload of sawlogs - 26 logs, all White Spruce, all 17' (roughly) and most close to the size of the on in the O.P. I sawed them into 8" x 8" beams, 2" x 8" beams and 1" x 8" boards. The goal was to have enough wood to build a storage building for my various pieces of equipment that I have accumulated over the years. I sawed all but the one log.
This is the first part of a four part building - its the storage for my JD450 dozer. It's almost done now, so I'll get another picture with the tin on. I built it as this summer's project, and with one minor exception, I built it solo - working 3 to 4 hours a day by myself in the Northern Ontario bush. It was peaceful, quiet, tranquil and everything I needed for mental relaxation. I learned a lot about leverage, mechanical advantage, gib cranes, block and tackle setups, etc.
The rest of the building will be two "lean-to" shed wings (one on each side) and a firewood storage "lean-to" shed on the rear, behind the dozer portion.
The front opening s 10' high x 14' wide. The top three beams (two eaves and one ridge) are 16' long. I got a neighbour to help sling them up onto the cross beams. (that was the exception)
Here's the pic's so far ::