Peter and Ryan helped me assemble the first wall today. The assembly went smoothly with few errors and issues. We also modified a few minor details of the design to make the build simpler.
Peter got started cutting while Ryan brought him boards and I moved them into place. The wall is made of 2x6s, between 12 and 16ft in length.
Once everything was laid out, we assembled the framing and squared everything up.
Next we covered the surface with 7/16″ OSB. This provides shear-strength to the structure and something solid for the interior insulation to be installed against.
We then stapled on a vapor barrier since the wall will be nearby but not up against the exterior insulation, creating a-semi conditioned space. If moisture condenses on the wall of the fully-conditioned space in the summer, it will drip away instead of absorbing into the sheathing.
Since the entire assembly weighs about 1,450 pounds, I’ll erect the wall using two 2-ton-rated 20ft chain hoists hanging from the steel frame using slings and hooked into anchor points on the wall.
The anchor points are heavy-duty 1/2″ D-rings attached with 3/8″ x 5″ structural lag screws driven through the OSB into the 4×6 LVL header. The entire lifting system is rated for about 4x the actual load.