Completed the last* exterior item of the shop build, the protruding firewood logs. I wasn't a big fan of the faux poles, so I omitted them from the plans and build thinking that 'someday' I would remove them from the home and do something else for style. Well someday passed some time ago and it remained obvious that they were missing, and I wasn't going to get around to a new plan any time soon. Simple enough to add, right? I found a local lumber yard that could get hand peeled poles and ordered one 8"d x 8'l
I saw how the ones on the garage were done when up in the attic. There is an equal amount of length of pole on either side of the wall, supported with some 2x6 blocking in the attic. I measured the garage locations and made some scale sketches of the shop which is same width but with taller doors.
To get the vertical placement I wanted, it put them right in the middle of the shop attic space, which is only 2' tall and inaccessible. The whole building is sheathed in OSB, but I wanted the heavy logs attached to 2x6s. Since this wall had no attic vents, all the studs should be 16"OC across the whole width. I calculated the possible pole spacing/locations aligned to integer stud spacing, and the distance error compared to that of the garage positions. I picked the best fit which are 8" farther apart.
I found a picture I took of the parapet wall before drywall that had a few stud locations relative to the door frame. This allowed me to find the first (center) one which is only 4" off center, and to locate the rest.
To mount the logs, I made some brackets out of flat bar and pipe that fit into holes drilled in the back of the poles. I cut a hole in the stucco, so the brackets could be fully torqued without distorting and cracking the stucco.
Didn't think I could get a decently straight cut with a chain saw so I made multiple rotate/cut with a 12" chop. Each pole chunk is 10" long.

Painted them to match and secured/sealed to wall with a ring of caulk.

Now they match better. From afar the 0.9/11% offset/gain errors aren't too bad.

Now the missing light between the garage doors is more noticeable... when does it end?