Page 451 - 2018_IRC

ROOF-CEILING CONSTRUCTION

CEILING JOISTS

FLAT STUD OR TRACK
BLOCKING AT 48 IN. O.C.
AT FIRST TWO JOIST
SPACES

3 NO. 8 SCREWS AT
EACH STUD

NO. 8 SCREWS AT
STUD BLOCKING 6 INCHES O.C. TO
AT CEILING FLAT BLOCKING WOOD STRUCTURAL
ELEVATION PANEL OR GYPSUM
BOARD DIAPHRAGM
GABLE
ENDWALL
STUDS
For SI: 1 inch = 25.4 mm.
FIGURE R804.3.7.1(1)
CEILING DIAPHRAGM TO GABLE ENDWALL DETAIL

ROOF SHEATHING ROOF RAFTER
(OR TRUSS TOP CHORD)

ROOF BLOCKING

CEILING JOIST
(OR TRUSS BOTTOM CHORD)
NO. 8 SCREWS AT 6 IN. O.C.

WOOD STRUCTURAL
PANEL OR GYPSUM
STRUCTURAL WALL
BOARD DIAPHRAGM
350T125-33 TRACK
BLOCKING

For SI: 1 inch = 25.4 mm.
FIGURE R804.3.7.1(2)
CEILING DIAPHRAGM TO SIDEWALL DETAIL

426 2018 INTERNATIONAL RESIDENTIAL CODE ®
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