Introduction
We are going to break down the framing into 11 framing modules that will be assembled on the ground in parallel with other construction processes.
This is the how-to for the modules of the 2nd floor. Starting from the south, they are labeled 4-9 with an "a" and "b" distinction referencing their location on either west or east respectively.
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Gather materials for mod 9a&b (these are enough materials for BOTH walls)
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8:2x4x8
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2:2x4x10
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2 sheets of 3/4"x4'x8' OSB for exterior sheathing
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2 sheets of 1/2"x4'x8' plywood for interior sheathing
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~buncha 3-1/8" construction screws
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~buncha 1-5/8" coated deck screws
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Cut Framing Members
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4: 2"x4"x5'5/8" (verticals)
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2: 2"x4"x4'3/4" (horizontal top/bottom)
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3: 2"x4"x2'9" (window frame top/bottom)
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2: 2"x4"x3' (window frame sides)
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1: 2"x4"x1'7-5/8" (blocking over window)
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1: 2'8"x3.5"x1/2" plywood
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Assemble Framing
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Place vertical studs (60-5/8") inside horizontal top and bottom plates (48-3/4")
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Sandwich plywood strip between two of the three 33" pieces and screw together (three screws across length is fine)
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Use sandwich to form top of window box, use 3' members to form sides and remaining 2'9" member for the base; screw together with 3-1/8" screws (toe-in screws at a diagonal into top plate from side members)
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Screw one stud (60-5/8") to either side of window box; letting top of studs hang free off the top of the window box but making sure they are all aligned at the bottom
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Toe-in center vertical above window box
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Place top and bottom plate such that vertical studs at edges leave a gap of 7" to one side of window, and 2-3/4" on the other.
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Cut and attach Exterior Sheathing (OSB)
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1: 34-1/2"x24-5/8"x3/4" OSB
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1: 34-1/2"x7-3/4"x3/4" OSB
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1: 71-1/8"x10"x3/4" OSB
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