I've noted in my main build thread that I'm currently working on a 12x16 cabin that will serve as a guest cabin when all is said and done. I thought I should document it separately from the "big house" cabin that is yet to be built, hence this thread.
As a recap, our property is on a small lake in Alaska, near Lake Louise in the Copper River basin. The lake is roughly a mile across and accessible by float plane. In the winter we access the property via snowmachine. Here's a picture from the property looking east towards the Wrangell Mountains. The cabin will be in the center of the pic, this side of the spruce trees.
I'm building in a full loft to provide extra sleep space and/or storage space. Walls are framed with 2x6 with a 10' top plate. Loft joists will be balloon framed in, resting on a let-in 2x8. The joists will extend 24" beyond the walls to tie in to the rafters, as shown below:
With a 12:12 pitch roof, there won't be a lot of head room in the loft. I can live with that, as it is essentially meant to be the same as the cabover portion in a pickup camper. If there are lots of guests, throw the kids in the loft and the parents can enjoy a proper bed downstairs. Rafters are 2x10, with R30 insulation and plastic attic vents to allow air flow from the soffit to the ridge. Roofing will be standing seam on top of complete ice&water shield. Siding is undecided, either home-milled board and batten or something very low maintenance.