Difficulty
Moderate
Steps
7
Time Required
00:01:30
- Module 9a & b 7 steps
User-Contributed Guide
This guide is not managed by the site's staff.
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.
Tools
Parts
No parts specified.
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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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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) - IMPORTANT Window hole must be at least 3'tall by 30" wide
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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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Place assembled frame on table/ground with narrow stud-gap on right and window on bottom
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Place tall strip over left stud-gap so that half the outer 2x4 of the window frame is exposed, and leave a 6" overhang along the bottom edge. This should leave a 1.5" overhang off the top and a 3/4" overhang off the left side. screw in at 16" spacing with 1-5/8" screws
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Place smaller strip along the bottom leaving a 6" overhang off the bottom and butting up against right edge of first osb strip; screw in at 16" spacing with 1-5/8" screws
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place remaining piece butted against right edge of first osb strip, and aligned with the top yielding a continuation of the 1.5" overhang at the top. the right edge should cover half the stud-face; screw in at 16" spacing with 1-5/8" screws
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Cut and attach interior sheathing (plywood)
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1: 34-1/2"x24-5/8"x1/2" plywood
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1: 65-1/8"x10"x1/2"plywood
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Place long strip flush against bottom and leaving a 3/4" overhang off the right edge; this should leave the left edge halfway across outermost stud of window frame
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place remaining piece butted up against left edge of tall strip (over the window) and aligned with the tall strip at the top.
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There should be a 1.5" overhang along the top
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Screw all in @ 16" spacing into all any spanned stud and along perimeter
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Module 9b is basically the same thing
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Build the framing exactly the same and cut the sheathing identically, but attach to opposite sides.
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So essentially, after the framing is built and before the exterior sheathing (osb) goes on, place the assembled frame on the table/ground with the narrow stud-gap on the left instead of right and the window on the bottom.
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Attach sheathing as in step 4 and continue following all directions.
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