Nailing support is required for the edges of the ceiling finish at the junction of the wall and ceiling where partitions run parallel to the ceiling joists (Figures 71 and 72). BRACED WALL PANELS To provide lateral resistance in areas with high wind or earthquake exposure, builders have the option of using strong wall segments called 71 Support for ceiling finish where ceiling joists run parallel to a partition 38 x 89 mm (2 x 4 in.) blocking nailed to ceiling joists ceiling joist 38 x 140 mm (2 x 6 in.) nailing support air barrier tab for connection to the ceiling air barrier system (may also be installed between top plates—not required between floors) plate stud 72 End-wall framing and nailing support for interior finish for platform construction stud bottom plate subfloor floor joist wood nailing support for interior finish end joist plate