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WALL CONSTRUCTION
<br />tern Or ti-LISSM (including stories below top story) shall
<br />have tile framing members connected in accordance with
<br />Otte of the rollowfilg.
<br />1. Fastening in accordance with Table R602.3(l)
<br />Where:
<br />1, 1, The basic wind speed does not exceed 90
<br />niph (110 arils), the wind exposure category is
<br />13, tile roof pitch is 5; 12 or greater, and the
<br />roof span is 12 feet (9754 aunt) or less, or
<br />1,2- 'file net uplift value at (tie top of a Wall does
<br />not exceed 100 plE The net uplift value sliall
<br />be determined in accordance With Section
<br />R802.11 and shall be permitted to be lVdLIMI
<br />by 60 plf (86 N/nim) for cacti foll wall
<br />above,
<br />2. Where tile net uplift value at the top of a Wall
<br />exceeds 100 plf (146 N/mm), installing approved
<br />uplift frailling Connectors to provide a continuous
<br />load path from the (oil of the Wall to (lie foundation
<br />or to a point Where (lie uplift force is tOO plf (146
<br />N/mm) or less. The net uplift NInlue, shall be as
<br />determined in )tern 1.2 above,
<br />3. Wall sheathing and fasteners designed in accordance
<br />with accepted engineering practice to resist com-
<br />bincd tip] i ft and shear forces.
<br />R602.4 hterior load -bearing walls. Interior load -bearing
<br />walls shall be constructed, framed and fireblocked as speci-
<br />fied for exterior walls,
<br />R602.5 Interior' nonbearing walls, Interior nonbcaring
<br />walls shall be permitted to be constructed Willi 2 inch by 3
<br />inch (51 nirn by 76 mill) studs spaced 24 inches (610 mm) on
<br />center or, when not part of a braced ivall line, 2 inch by 4
<br />inch (51 min by 102 rim) flat studs spaced at 16 inches (406
<br />n1m) on center. Interior noribcaring walls shall be capped
<br />With at least a single top plate. Interior aonbearing wilts shall
<br />be fireblocked in accordance %vith Section R602,8,
<br />R602.6 Drilling and notching of studs, Drilling and notch-
<br />ing Of SILKIS shall be in accordance with the fojlowirlgJ
<br />1. Notching. Any stud iii in exterior wall or bearing parti-
<br />tion may be cut or notched to a depth not exceeding 25
<br />percent of its Width. Studs in nonbearing partitions may
<br />be notched to a depth not to exceed 40 percent of a sin-
<br />& stud Width,
<br />2. Drilling. Any StUd may be bored or drilled, provided
<br />that (lie diameter of the resulting hole is no more than
<br />60 percent of the stud width, the edge of (tie hole is no
<br />more than '/, inch (16 ram) to the edge of the stud, and
<br />the hole is not located ill tile same section as a cut or
<br />notch. Studs, located in exterior Walls or bearing parti-
<br />tions drilled over 40 percent and tip to 60 percent sliall
<br />also be doubled with no more than two successive dou-
<br />bled studs bored. See Figures R602,6(1) and R602.6(2).
<br />Exception: Use of approved stud shoes is permitted
<br />When they are installed in accordance with the man-
<br />tifacturer's recommendations,
<br />R602.6�.1 Drilling and notching of lot) )Ante. Wilen pip-
<br />ing or ductwoik is placed in or partly in in exterior wall or
<br />interior load -bearing wall, necessitating cutting, drilling or
<br />notching of the top plate by more than 50 percent of its
<br />width, a galvanized metal fie not less than 0.054 inch thick
<br />(137 nnn) (16 gal and 1i12 inches (38 mm) wide sliall be
<br />fastened across and to the plate at cacti side of tile opening
<br />with riot less than eight 10d (0J48 inch diameter) having a
<br />inininium length of 1Y, inches (38 min) at each side or
<br />cqUiWfleflL The Metal, tie must extend wminitnum of 6
<br />inches past the opening. See Figure R602.6. L
<br />Exception: When the entire Side of tile wall with the
<br />notch or cut is covered by wood s1rue(oril, panel sheath-
<br />ing.
<br />R602.7 Headers. For header' spans see Tables R502.5(t),
<br />R502.5(2) and R602.7. 1.
<br />R602.7.1 Sillgle flicillbet' ficaders. Single headers shall
<br />be framed with a single flat 2-inch-nominal (51 mm)
<br />illealber or wall plate not less in Width th,-111 tile wall studs
<br />oil the top and bottom of the header in accordance with
<br />Figures R602,7, t(l) and R602.7.1(2).
<br />1002.7.2 Wood structural panel box headers. Wood
<br />structural panel box headers shall be constructed in accor-
<br />dance With Figure R602.7.2 and Table R602.7.2,
<br />R6017.3 Nonbearing walls. Load -bearing headers are
<br />not required in interior or exterior nonbearing walls. A sill-
<br />gle flat 2-inch by 4-inch (51 jimn by 102 nun) member
<br />may be used as a header in interior or exterior nonbearing
<br />walls for Openings Lip to 8 feet (2438 nun) ill width if the
<br />vertical dislance to (tie parallel nailing surface above is ]lot
<br />more than 24 inches (610 min), For such nonbearing head-
<br />ers, no cripples or blocking are required above tile )leader,
<br />R602.8 Fli-eblocking required, Fireblocking shalt be pro-
<br />vided in accordance with Section R302.1 1.
<br />R602.9 CHI)PIe walls. Foundation cripple walls shall be
<br />framed of studs not smaller (hall the studding above, When
<br />exceeding 4 feet (1219 jilm) in height, such walls shall be
<br />framed Of studs fiflVillg tire size required for in addition,(]
<br />story.
<br />Cripple Walls With a Mid height less thin 14 inches (356
<br />mm) shall be continuously sheathed oil one side will, wood
<br />MUCtIll'al PRIICk faStelled to both the lot) and bottorn plates ill
<br />accordance with Table R602.3(t), or the cripple walls shall
<br />be constructed of solid blockiiig,
<br />All cripple walls shall be supported on continuous founda-
<br />tions,
<br />R602.10 Wall bracing. Buildings shall be braced ill accor-
<br />(1,111ce wit], this section or, when applicable, Section R602A2,
<br />Where a building, or portion thereof, does not comply with
<br />one or more of the bracing requirements in (his section, those
<br />portions shall be designed wind constructed ill accordance wi—
<br />Section R301.1.
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<br />2012 INTERNATIONAL nFESIDENTIAL CODE'
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