Steel Wall Framing

R603.1 General

Elements shall be straight and free of any defects that would significantly affect structural performance. Cold-formed steel wall framing members shall comply with the requirements of this section.

The provisions of this section shall control the construction of exterior steel wall framing and interior load-bearing steel wall framing for buildings not more than 60 feet (18 288 mm) long perpendicular to the joist or truss span, not more than 40 feet (12 192 mm) wide parallel to the joist or truss span, and not more than two stories in height. All exterior walls installed in accordance with the provisions of this section shall be considered as load-bearing walls. Steel walls constructed in accordance with the provisions of this section shall be limited to sites subjected to a maximum design wind speed of 110 miles per hour (49 m/s) Exposure A, B or C and a maximum ground snow load of 70 psf (3.35 kPa).

R603.1.2 In-Line Framing

Load-bearing steel studs constructed in accordance with Section R603 shall be located directly in-line with joists, trusses and rafters with a maximum tolerance of ³ / ₄ inch (19.1 mm) between their center lines. Interior load-bearing steel stud walls shall be supported on foundations or shall be located directly above load-bearing walls with a maximum tolerance of ³ / ₄ inch (19 mm) between the centerline of the studs.

R603.2 Structural Framing

Load-bearing steel wall framing members shall comply with Figure R603.2(1) and with the dimensional and minimum thickness requirements specified in Tables R603.2(1) and R603.2(2). Tracks shall comply with Figure R603.2(2) and shall have a minimum flange width of 1¹/₄ inches (32 mm). The maximum inside bend radius for members shall be the greater of ³/₃₂-inch (2.4 mm) or twice the uncoated steel thickness. Holes in wall studs and other structural members shall comply with all of the following conditions:

1. Holes shall conform to Figure R603.2(3);

2. Holes shall be permitted only along the centerline of the web of the framing member;

3. Holes shall have a center-to-center spacing of not less than 24 inches (610 mm);

4. Holes shall have a width not greater than 0.5 times the member depth, or 1¹/₂ inches (38.1 mm);

5. Holes shall have a length not exceeding 4¹/₂ inches (114 mm); and

6. Holes shall have a minimum distance between the edge of the bearing surface and the edge of the hole of not less than 10 inches (254 mm).

Framing members with web holes violating the above requirements shall be patched in accordance with Section R603.3.5 or designed in accordance with accepted engineering practices.

TABLE R603.2(1) LOAD-BEARING COLD-FORMED STEEL STUD SIZES

MEMBER DESIGNATION^a	WEB DEPTH (inches)	MINIMUM FLANGE WIDTH (inches)	MAXIMUM FLANGE WIDTH (inches)	MINIMUM LIP SIZE (inches)
350S162-t	3.5	1.625	2	0.5
550S162-t	5.5	1.625	2	0.5

For SI: 1 inch = 25.4 mm; 1 mil = 0.0254 mm.

a. The member designation is defined by the first number representing the member depth in hundredths of an inch "S" representing a stud or joist member, the second number representing the flange width in hundredths of an inch, and the letter "t" shall be a number representing the minimum base metal thickness in mils [See Table R603.2(2)].

TABLE R603.2(2) MINIMUM THICKNESS OF COLD-FORMED STEEL STUDS

DESIGNATION (mils)	MINIMUM UNCOATED THICKNESS (inches)	REFERENCE GAGE NUMBER
33	0.033	20
43	0.043	18
54	0.054	16
68	0.068	14

For SI: 1 inch = 25.4 mm, 1 mil = 0.0254 mm.

FIGURE R603.2(1) C-SECTION

FIGURE R603.2(2) TRACK SECTION

For SI: 1 inch = 25.4 mm.

FIGURE R603.2(3) WEB HOLES

R603.2.1 Material

Load-bearing steel framing members shall be cold-formed to shape from structural quality sheet steel complying with the requirements of one of the following:

1. ASTM A 653: Grades 33, 37, 40 and 50 (Class 1 and 3).

2. ASTM A 792: Grades 33, 37, 40 and 50A.

3. ASTM A 875: Grades 33, 37, 40 and 50 (Class 1 and 3).

4. ASTM A 1003: Grades 33, 37, 40 and 50.

R603.2.2 Identification

Load-bearing steel framing members shall have a legible label, stencil, stamp or embossment with the following information as a minimum:

1. Manufacturer’s identification.

2. Minimum uncoated steel thickness in inches (mm).

3. Minimum coating designation.

4. Minimum yield strength, in kips per square inch (ksi) (kN).

R603.2.3 Corrosion Protection

Load-bearing steel framing shall have a metallic coating complying with one of the following:

1. A minimum of G 60 in accordance with ASTM A 653.

2. A minimum of AZ 50 in accordance with ASTM A 792.

3. A minimum of GF 60 in accordance with ASTM A 875.

R603.2.4 Fastening Requirements

Screws for steel-tosteel connections shall be installed with a minimum edge distance and center-to-center spacing of ¹ / ₂ inch (12.7 mm), shall be self-drilling tapping and shall conform to SAE J 78. Structural sheathing shall be attached to steel studs with minimum No. 8 self-drilling tapping screws that conform to SAE J 78. Screws for attaching structural sheathing to steel wall framing shall have a minimum head diameter of 0.292 inch (7.4 mm) with countersunk heads and shall be installed with a minimum edge distance of ³ / ₈ inch (9.5 mm). Gypsum board shall be attached to steel wall framing with minimum No. 6 screws conforming to ASTM C 954 and shall be installed in accordance with Section R702. For all connections, screws shall extend through the steel a minimum of three exposed threads. All self-drilling tapping screws conforming to SAE J 78 shall have a Type II coating in accordance with ASTM B 633.

Where No. 8 screws are specified in a steel-to-steel connection the required number of screws in the connection is permitted to be reduced in accordance with the reduction factors in Table R603.2.4, when larger screws are used or when one of the sheets of steel being connected is thicker than 33 mils (0.84 mm). When applying the reduction factor the resulting number of screws shall be rounded up.

TABLE R603.2.4 SCREW SUBSTITUTION FACTOR

SCREW SIZE	THINNEST CONNECTED STEEL SHEET (mils)
SCREW SIZE	33	43
#8	1.0	0.67
#10	0.93	0.62
#12	0.86	0.56

For SI: 1 mil = 0.0254 mm.

R603.3 Wall Construction

All exterior steel framed walls and interior load-bearing steel framed walls shall be constructed in accordance with the provisions of this section and Figure R603.3.

For SI: 1 inch = 25.4 mm.

FIGURE R603.3 STEEL WALL CONSTRUCTION

R603.3.1 Wall to Foundation or Floor Connections

Steel framed walls shall be anchored to foundations or floors in accordance with Table R603.3.1 and Figure R603.3.1(1) or R603.3.1(2).

TABLE R603.3.1 WALL TO FOUNDATION OR FLOOR CONNECTION REQUIREMENTS^a,b,c

FRAMING CONDITION	BASIC WIND SPEED (mph) AND EXPOSURE
FRAMING CONDITION	85 A/B or Seismic Design Categories A, B and C	85 C or less than 110 A/B	Less than 110 C
Wall bottom track to floor joist or track	1-No. 8 screw at 12" o.c.	1-No. 8 screw at 12" o.c.	2-No. 8 screws at 12" o.c.
Wall bottom track to wood sill per Figure R603.3.1(2)	Steel plate spaced at 4" o.c., with 4-No. 8 screws and 4-10d or 6-8d common nails	Steel plate spaced at 3" o.c., with 4-No. 8 screws and 4-10d or 6-8d common nails	Steel plate spaced at 2" o.c., with 4-No. 8 screws and 4-10d or 6-8d common nails
Wall bottom track to foundation per Figure R603.3.1(1)	¹/₂" minimum diameter anchor bolt at 6" o.c.	¹/₂" minimum diameter anchor bolt at 6" o.c.	¹/₂" minimum diameter anchor bolt at 4" o.c.
Wind uplift connector capacity for 16-inch stud spacing^c	N/R	N/R	65 lb
Wind uplift connector capacity for 24-inch stud spacing^c	N/R	N/R	100 lb

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s, 1 pound = 4.4 N.

a. Anchor bolts shall be located not more than 12 inches from corners or the termination of bottom tracks (e.g., at door openings or corners). Bolts shall extend a minimum of 7 inches into concrete or masonry.

b. All screw sizes shown are minimum.

c. N/R = uplift connector not required. Uplift connectors are in addition to other connection requirements and shall be applied in accordance with Section R603.8.

For SI: 1 inch = 25.4 mm.

FIGURE R603.3.1(1) WALL TO FOUNDATION CONNECTION

For SI: 1 inch = 25.4 mm.

FIGURE R603.3.1 (2) WALL TO WOOD SILL CONNECTION

R603.3.2 Load-Bearing Walls

Steel studs shall comply with Tables R603.3.2(2) through R603.3.2(21). The tabulated stud thickness for structural walls shall be used when the attic load is 10 psf (0.48 kPa) or less. When an attic storage load is greater than 10 psf (0.48 kPa) but less than or equal to 20 psf (0.96 kPa), the next higher snow load column value from Tables R603.3.2(2) through R603.3.2(21) shall be used to select the stud size. The tabulated stud thickness for structural walls supporting one floor, roof and ceiling shall be used when the second floor live load is 30 psf (1.44 kPa). When the second floor live load is greater than 30 psf (1.44 kPa) but less than or equal to 40 psf (1.92 kPa) the design value in the next higher snow load column from Tables R603.2(12) through R603.3.2(21) shall be used to select the stud size.

Fastening requirements shall be in accordance with Section R603.2.4 and Table R603.3.2(1). Tracks shall have the same minimum thickness as the wall studs. Exterior walls with a minimum of ¹ / ₂ -inch (13 mm) gypsum board installed in accordance with Section R702 on the interior surface and wood structural panels of minimum ⁷ / ₁₆ -inch thick (11mm) oriented-strand board or ¹⁵ / ₃₂ -inch thick (12 mm) plywood installed in accordance with Table R603.3.2(1) on the outside surface shall be permitted to use the next thinner stud from Tables R603.3.2(2) through R603.3.2(13) but not less than 33 mils (0.84 mm). Interior load-bearing walls with a minimum ¹ / ₂ -inch (13 mm) gypsum board installed in accordance with Section R702 on both sides of the wall shall be permitted to use the next thinner stud from Tables R603.3.2(2) through R603.3.2(13) but not less than 33 mils (0.84 mm).

TABLE R603.3.2(1) WALL FASTENING SCHEDULE^a

DESCRIPTION OF BUILDING ELEMENT	NUMBER AND SIZE OF FASTENERS^a	SPACING OF FASTENERS
Floor joist to track of load-bearing wall	2-No. 8 screws	Each joist
Wall stud to top or bottom track	2-No. 8 screws	Each end of stud, one per flange
Structural sheathing to wall studs	No. 8 screws	6" o.c. on edges and 12" o.c. at intermediate supports
Roof framing to wall	Approved design or tie down in accordance with Section R802.11

For SI: 1 inch = 25.4 mm.

a. All screw sizes shown are minimum.

TABLE R603.3.2(2) 24-FOOT-WIDE BUILDING SUPPORTING ROOF AND CEILING ONLY^{a, b, c}33 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	43	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	110 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	43	43	43	43	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
Roof/ceiling dead load is 12 psf.
Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(3) 24-FOOT-WIDE BUILDING SUPPORTING ROOF AND CEILING ONLY^{a, b, c} 50 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	110 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
Roof/ceiling dead load is 12 psf.
Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(4) 28-FOOT-WIDE BUILDING SUPPORTING ROOF AND CEILING ONLY^{a, b, c} 33 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	43	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	110 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	43	43	43	43	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
Roof/ceiling dead load is 12 psf.
Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(5) 28-FOOT-WIDE BUILDING SUPPORTING ROOF AND CEILING ONLY^{a, b, c} 50 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	110 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
Roof/ceiling dead load is 12 psf.
Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(6) 32-FOOT-WIDE BUILDING SUPPORTING ROOF AND CEILING ONLY^{a, b, c} 33 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	33	33	43	43	33	43	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	43
—	110 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	33	33	43	43	33	43	43	43	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	43

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
Roof/ceiling dead load is 12 psf.
Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(7) 32-FOOT-WIDE BUILDING SUPPORTING ROOF AND CEILING ONLY^{a, b, c} 50 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	33	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	33	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	110 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
Roof/ceiling dead load is 12 psf.
Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(8) 36-FOOT-WIDE BUILDING SUPPORTING ROOF AND CEILING ONLY^{a, b,c} 33 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	43	43	33	33	33	43	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	43	43	33	33	33	43	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	43	43	33	33	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	43
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	43	43	33	33	43	43	33	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	43
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	33	33	43	43	43	43	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	43	33	33	33	43
—	110 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	33	33	43	54	43	43	43	54	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	43	33	33	33	33

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
Roof/ceiling dead load is 12 psf.
Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(9) 36-FOOT-WIDE BUILDING SUPPORTING ROOF AND CEILING ONLY^{a, b, c} 50 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	110 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
Roof/ceiling dead load is 12 psf.
Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(10) 40-FOOT-WIDE BUILDING SUPPORTING ROOF AND CEILING ONLY^{a, b, c} 33 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	33	33	43	43	33	33	43	43	33	33	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	33	33	33	33	43
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	33	33	43	43	33	33	43	43	33	33	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	33	33	33	33	43
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	33	33	43	43	33	33	43	43	33	33	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	43	33	33	33	43
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	33	33	43	54	33	33	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	43	33	33	33	43
—	100 mph	350S162	16	33	33	33	43	33	33	33	43	33	33	33	43
		350S162	24	33	33	43	54	43	43	43	54	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	43	33	33	33	43
—	110 mph	350S162	16	33	33	33	43	33	33	33	43	33	33	43	43
		350S162	24	33	43	43	54	33	43	43	54	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	43	33	33	33	43

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
Roof/ceiling dead load is 12 psf.
Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(11) 40-FOOT-WIDE BUILDING SUPPORTING ROOF AND CEILING ONLY^{a, b, c} 50 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	43	43	33	33	33	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	110 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	33	33	43	43	33	33	43	43	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
Roof/ceiling dead load is 12 psf.
Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(12) 24-FOOT-WIDE BUILDING SUPPORTING ONE FLOOR, ROOF AND CEILING^{a, b, c} 33 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	43	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	43	43	43	43	43	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	43	43
		350S162	24	43	43	43	43	43	43	43	43	43	43	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	110 mph	350S162	16	33	33	33	33	33	33	33	33	43	43	43	43
		350S162	24	43	43	43	43	43	43	43	43	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	43

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
    Second floor dead load is 10 psf.
    Second floor live load is 30 psf.
    Roof/ceiling dead load is 12 psf.
    Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(13) 24-FOOT-WIDE BUILDING SUPPORTING ONE FLOOR, ROOF AND CEILING^{a, b, c} 50 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	33	33	33	33	33	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	110 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	43	43	43	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
    Second floor dead load is 10 psf.
    Second floor live load is 30 psf.
    Roof/ceiling dead load is 12 psf.
    Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(14) 28-FOOT-WIDE BUILDING SUPPORTING ONE FLOOR, ROOF AND CEILING^{a, b, c} 33 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	43	43	43	33	33	43	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	43	43	43	33	33	43	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	43	43	43	43	43	43	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	43	43	43	43	43	43	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	43	43	43	43
		350S162	24	43	43	43	43	43	43	43	43	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	43
—	110 mph	350S162	16	33	33	33	33	33	33	33	43	43	43	43	43
		350S162	24	43	43	43	43	43	43	54	54	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	43	43	43

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
    Second floor dead load is 10 psf.
    Second floor live load is 30 psf.
    Roof/ceiling dead load is 12 psf. br> Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(15) 28-FOOT-WIDE BUILDING SUPPORTING ONE FLOOR, ROOF AND CEILING^{a, b, c} 50 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	33	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	33	33	33	33	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	33	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	33	43	33	33	33	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	33	43	43	33	33	43	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	110 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	33	43	43	43	43	43	43	43	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
    Second floor dead load is 10 psf.
    Second floor live load is 30 psf.
    Roof/ceiling dead load is 12 psf.
    Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(16) 32-FOOT-WIDE BUILDING SUPPORTING ONE FLOOR, ROOF AND CEILING^{a, b, c} 3 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	43	43	43	43	43	43	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	33	33	33	33	43
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	43	43	43	43	43	43	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	33	33	33	33	43
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	43	43	43	43	43	43	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	33	33	33	33	43
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	43	43	43	43	43	43	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	33	33	33	33	43
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	43	43	43	43
		350S162	24	43	43	43	54	43	43	43	54	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	43	33	33	43	43
—	110 mph	350S162	16	33	33	33	43	33	33	43	43	43	43	43	43
		350S162	24	43	43	43	54	43	54	54	54	54	54	54	68
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	43	43	43	43	43

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
    Second floor dead load is 10 psf.
    Second floor live load is 30 psf.
    Roof/ceiling dead load is 12 psf.
    Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(17) 32-FOOT-WIDE BUILDING SUPPORTING ONE FLOOR, ROOF AND CEILING^{a, b, c} 50 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	43	43	43	33	33	33	43	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	43	43	43	33	33	33	43	33	33	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	43	43	43	33	33	33	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	43	43	43	33	33	33	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	33	43	43	43	43	43	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33
—	110 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	43	43	43	43	43	43	43	43	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	33

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
    Second floor dead load is 10 psf.
    Second floor live load is 30 psf.
    Roof/ceiling dead load is 12 psf.
    Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(18) 36-FOOT-WIDE BUILDING SUPPORTING ONE FLOOR, ROOF AND CEILING^{a, b, c} 33 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	43	43	43	54	43	43	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	43	43	43	43	33	33	33	43	33	33	33	43
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	43	43	43	54	43	43	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	43	43	43	43	33	33	33	43	33	33	43	43
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	43	43	43	54	43	43	43	54	43	43	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	43	43	43	43	33	33	33	43	33	33	43	43
110 mph	90 mph	350S162	16	33	33	33	43	33	33	33	33	33	33	43	43
		350S162	24	43	43	43	54	43	43	43	54	43	43	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	43	43	43	43	33	33	33	43	33	33	43	43
—	100 mph	350S162	16	33	33	33	43	33	33	43	43	43	43	43	43
		350S162	24	43	43	43	54	43	43	54	54	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	43	43	43	43	33	33	33	43	43	43	43	43
—	110 mph	350S162	16	33	33	33	43	33	33	43	43	43	43	43	43
		350S162	24	43	43	43	54	43	54	54	54	54	54	54	68
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	43	43	43	43	43

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
    Second floor dead load is 10 psf.
    Second floor live load is 30 psf.
    Roof/ceiling dead load is 12 psf.
    Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(19) 36-FOOT-WIDE BUILDING SUPPORTING ONE FLOOR, ROOF AND CEILING^{a, b, c} 50 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	43	43	43	43	33	33	43	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	33	33	33	33	33
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	43	43	43	43	33	33	43	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	43	33	43	33	33	33	33	33	33	33	33
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	43	43	43	43	33	33	43	43	43	43	43	43
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	33	33	33	33	33
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	43	43	43	43	33	33	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	43	33	33	43	33	33	33	33	33	33	33	33
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	43	43	43	43	43	43	43	43	43	43	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	43	33	33	33	33	33	33	33	43
—	110 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	43	43
		350S162	24	43	43	43	54	43	43	43	43	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	33	33	33	33	33	33	33	33	33	43

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
    Second floor dead load is 10 psf.
    Second floor live load is 30 psf.
    Roof/ceiling dead load is 12 psf.
    Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(20) 40-FOOT-WIDE BUILDING SUPPORTING ONE FLOOR, ROOF AND CEILING^{a, b, c} 33 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	43	33	33	33	43	33	33	33	43
		350S162	24	43	54	54	54	43	43	43	54	43	43	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	43	43	43	43	43	43	43	43	33	43	43	43
90 mph	—	350S162	16	33	33	33	43	33	33	33	43	33	33	33	43
		350S162	24	43	54	54	54	43	43	43	54	43	43	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	43	43	43	43	43	43	43	43	33	43	43	43
100 mph	85 mph	350S162	16	33	33	33	43	33	33	33	43	33	33	43	43
		350S162	24	43	54	54	54	43	43	43	54	43	43	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	43	43	43	43	43	43	43	43	33	43	43	43
110 mph	90 mph	350S162	16	33	33	33	43	33	33	33	43	33	43	43	43
		350S162	24	43	54	54	54	43	43	43	54	43	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	43	43	43	43	43	43	43	43	33	43	43	43
—	100 mph	350S162	16	33	33	33	43	33	33	43	43	33	43	43	43
		350S162	24	43	54	54	54	54	54	54	54	43	54	54	68
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	43	43	43	43	43	43	43	43	33	43	43	43
—	110 mph	350S162	16	33	33	43	43	43	43	43	43	33	43	43	43
		350S162	24	54	54	54	54	54	54	54	54	54	68	68	68
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	43	43	43	43	43	43	43	43	33	43	43	43

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
    Second floor dead load is 10 psf.
    Second floor live load is 30 psf.
    Roof/ceiling dead load is 12 psf.
    Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

TABLE R603.3.2(21) 40-FOOT-WIDE BUILDING SUPPORTING ONE FLOOR, ROOF AND CEILING^{a, b, c} 50 ksi STEEL

WIND SPEED		MEMBER SIZE	STUD SPACING (inches)	MINIMUM STUD THICKNESS (mils)
WIND SPEED				8-Foot Studs				9-Foot Studs				10-Foot Studs
Exp. A/B	Exp. C			Ground Snow Load (psf)
Exp. A/B	Exp. C			20	30	50	70	20	30	50	70	20	30	50	70
85 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	43	43	43	54	43	43	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	43	43	33	33	33	33	33	33	33	43
90 mph	—	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	43	43	43	54	43	43	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	43	43	33	33	33	33	33	33	33	43
100 mph	85 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		350S162	24	43	43	43	54	43	43	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	43	43	33	33	33	33	33	33	33	43
110 mph	90 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	43	43	43	54	43	43	43	43	43	43	43	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	43	43	33	33	33	33	33	33	33	43
—	100 mph	350S162	16	33	33	33	33	33	33	33	33	33	33	33	43
		350S162	24	43	43	43	54	43	43	43	43	43	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	43	43	33	33	33	33	33	33	33	43
—	110 mph	350S162	16	33	33	33	43	33	33	33	43	33	43	43	43
		350S162	24	43	43	43	54	43	43	43	54	54	54	54	54
		550S162	16	33	33	33	33	33	33	33	33	33	33	33	33
		550S162	24	33	33	43	43	33	33	43	43	33	33	43	43

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mil = 0.0254 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 0.0479 kPa, 1 ksi = 1000 psi = 6.895 MPa.

a. Deflection criterion: L/240.

b. Design load assumptions:
    Second floor dead load is 10 psf.
    Second floor live load is 30 psf.
    Roof/ceiling dead load is 12 psf.
    Attic live load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the wall studs.

R603.3.3 Stud Bracing

The flanges of steel studs shall be laterally braced in accordance with one of the following:

1. Gypsum board installed with minimum No. 6 screws in accordance with Section R702 or structural sheathing installed in accordance with Table R603.3.2(1).

2. Horizontal steel strapping installed in accordance with Figure R603.3 at mid-height for 8-foot (2438 mm) walls, and one-third points for 9-foot and 10- foot (2743 mm and 3048 mm) walls. Steel straps shall be at least 1.5 inches in width and 33 mils in thickness (38 mm by 0.84 mm). Straps shall be attached to the flanges of studs with at least one No. 8 screw. In-line blocking shall be installed between studs at the termination of all straps. Straps shall be fastened to the blocking with at least two No. 8 screws.

3. Sheathing on one side and strapping on the other side. Sheathing shall be installed in accordance with Method #1 above. Steel straps shall be installed in accordance with Method #2 above.

R603.3.4 Cutting and Notching

Flanges and lips of steel studs and headers shall not be cut or notched.

R603.3.5 Hole Patching

Web holes violating the requirements in Section R603.2 shall be designed in accordance with one of the following:

1. Framing members shall be replaced or designed in accordance with accepted engineering practices when web holes exceed the following size limits:

1.1. The depth of the hole, measured across the web, exceeds 70 percent of the flat width of the web; or

1.2. The length of the hole measured along the web exceeds 10 inches (254 mm) or the depth of the web, whichever is greater.

2. Web holes not exceeding the dimensional requirements in R603.3.5(1) shall be patched with a solid steel plate, stud section, or track section in accordance with Figure R603.3.5. The steel patch shall be as a minimum the same thickness as the receiving member and shall extend at least 1 inch (25 mm) beyond all edges of the hole. The steel patch shall be fastened to the web of the receiving member with No. 8 screws spaced no more than 1 inch (25 mm) center-to-center along the edges of the patch with a minimum edge distance of ¹/₂ inch (13 mm).

For SI: 1 inch = 25.4 mm.

FIGURE R603.3.5 HOLE PATCH

R603.3.6 Splicing

Steel studs and other structural members shall not be spliced. Tracks shall be spliced in accordance with Figure R603.3.6.

For SI: 1 inch = 25.4 mm.

FIGURE R603.3.6 TRACK SPLICE

R603.4 Corner Framing

Corner studs and the top tracks shall be installed in accordance with Figure R603.4.

For SI: 1 inch = 25.4

FIGURE R603.4 CORNER FRAMING

R603.5 Exterior Wall Covering

The method of attachment of exterior wall covering materials to cold-formed steel stud wall framing shall conform to the manufacturer’s installation instructions.

R603.6 Headers

Headers shall be installed above wall openings in all exterior walls and interior load-bearing walls in accordance with Figure R603.6 and Tables R603.6(1) through R603.6(8), or shall be designed in accordance with the AISI Standard for Cold-formed Steel Framing-Header Design (COFS/Header Design).

TABLE R603.6(1) BOX-BEAM HEADER SPANS Headers supporting roof and ceiling only (33 ksi steel)^{a, b, c}

MEMBER DESIGNATION	GROUND SNOW LOAD					GROUND SNOW LOAD
	(20 psf)					(30 psf)
	Building width^c					Building width^c
	24´	28´	32´	36´	40´	24´	28´	32´	36´	40´
2-350S162-33	3´-10"	3´-5"	3´-0"	2´-6"	2´-2"	3´-3"	2’-9"	2´-4"	—	—
2-350S162-43	5´-1"	4´-8"	4´-4"	4´-0"	3´-7"	4´-6"	4´-2"	3´-8"	3´-4"	2´-11"
2-350S162-54	5´-9"	5´-4"	5´-0"	4´-9"	4´-5"	5´-3"	4´-10"	4´-6"	4´-2"	3´-10"
2-350S162-68	6´-7"	6´-1"	5´-9"	5´-5"	5´-1"	6´-0"	5´-6"	5´-2"	4´-10"	4´-7"
2-350S162-97	8´-0"	7´-5"	7´-0"	6´-6"	6´-3"	7´-3"	6´-9"	6´-4"	6´-0"	5´-7"
2-550S162-33	5´-8"	5´-0"	4´-5"	3´-11"	3´-4"	4´-9"	4´-1"	3´-6"	2´-11"	—
2-550S162-43	7´-2"	6´-8"	6´-3"	5´-8"	5´-2"	6´-6"	5´-11"	5´-3"	4´-9"	4´-3"
2-550S162-54	8´-2"	7´-7"	7´-2"	6´-9"	6´-5"	7´-5"	6´-11"	6´-6"	6´-0"	5´-6"
2-550S162-68	9´-3"	8´-7"	8´-0"	7´-8"	7´-3"	8´-5"	7´-10"	7´-4"	7´-0"	6´-7"
2-550S162-97	11´-2"	10´-5"	9´-10"	9´-3"	8´-11"	10´-2"	9´-6"	9´-1"	8´-5"	8´-0"
2-800S162-33	6´-9"	5´-11"	5´-2"	4´-6"	3´-10"	5´-6"	4´-6"	4´-0"	—	—
2-800S162-43	9´-0"	8´-5"	7´-8"	7´-0"	6´-4"	8´-1"	7´-3"	6´-6"	5´-9"	5´-2"
2-800S162-54	10´-9"	10´-0"	9´-5"	8´-11"	8´-4"	9´-9"	9´-1"	8´-6"	7´-9"	7´-1"
2-800S162-68	12´-2"	11´-4"	10´-8"	10´-2"	9´-7"	11´-1"	10´-4"	9´-9"	9´-3"	8´-9"
2-800S162-97	14´-9"	13´-9"	13´-0"	12´-3"	11´-7"	13´-5"	12´-6"	11´-10"	11´-2"	10´-7"
2-1000S162-43	10´-0"	9´-2"	8´-4"	7´-6"	6´-9"	8´-9"	7´-10"	7´-0"	6´-2"	5´-5"
2-1000S162-54	12´-0"	11´-2"	10´-6"	9´-11"	9´-2"	10´-11"	10´-2"	9´-3"	8´-6"	7´-9"
2-1000S162-68	14´-5"	13´-6"	12´-8"	12´-0"	11´-5"	13´-2"	12´-3"	11´-6"	11´-0"	10´-4"
2-1000S162-97	17´-5"	16´-4"	15´-4"	14´-6"	13´-11"	16´-0"	14´-11"	14´-0"	13´-3"	12´-7"
2-1200S162-43	10´-10"	9´-9"	8´-9"	7´-11"	7´-1"	9´-3"	8´-2"	7´-2"	6´-4"	5´-6"
2-1200S162-54	13´-0"	12´-2"	11´-6"	10´-7"	9´-9"	11´-11"	11´-0"	10´-0"	9´-0"	8´-2"
2-1200S162-68	15´-5"	14´-5"	13´-6"	12´-11"	12´-3"	14´-0"	13´-2"	12´-4"	11´-9"	10´-11"
2-1200S162-97	20´-1"	18´-9"	17´-9"	16´-9"	16´-0"	18´-4"	17´-2"	16´-2"	15´-3"	14´-7"

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 0.0479 kPa, 1 pound per square inch = 6.895 kPa.

a. Deflection criteria: L/360 for live loads, L/240 for total loads.

b. Design load assumptions:
Roof/Ceiling dead load is 12 psf.
Attic dead load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the header.

TABLE R603.6(2) BOX-BEAM HEADER SPANS Headers supporting roof and ceiling only (33 ksi steel)^{a, b, c}

MEMBER DESIGNATION	GROUND SNOW LOAD					GROUND SNOW LOAD
	(50 psf)					(70 psf)
	Building width^c					Building width^c
	24´	28´	32´	36´	40´	24´	28´	32´	36´	40´
2-350S162-33	—	—	—	—	—	—	—	—	—	—
2-350S162-43	3´-2"	2´-7"	2´-2"	—	—	2´-0"	—	—	—	—
2-350S162-54	4´-1"	3´-6"	3´-1"	2´-8"	2´-3"	3´-0"	2´-6"	-	—	—
2-350S162-68	4´-9"	4´-5"	4´-0"	3´-7"	3´-3"	4´-0"	3´-4"	3´-0"	2´-6"	2´-1"
2-350S162-97	5´-10"	5´-5"	5´-1"	4´-9"	4´-6"	5´-0"	4´-7"	4´-4"	4´-0"	3´-9"
2-550S162-33	2´-9"	—	—	—	—	—	—	—	—	—
2-550S162-43	4´-7"	3´-11"	3´-3"	—	—	3´-2"	—	—	—	—
2-550S162-54	5´-10"	5´-2"	4´-6"	4´-0"	3´-6"	4´-5"	3´-9"	3´-1"	—	—
2-550S162-68	6´-10"	6´-4"	5´-9"	5´-3"	4´-9"	5´-7"	5´-0"	4´-4"	3´-9"	3´-3"
2-550S162-97	8´-4"	7´-9"	7´-3"	6´-10"	6´-6"	7´-2"	6´-8"	6´-3"	5´-11"	5´-7"
2-800S162-33	—	—	—	—	—	—	—	—	—	—
2-800S162-43	5´-7"	4´-9"	3´-11"	—	—	—	—	—	—	—
2-800S162-54	7´-7"	6´-8"	5´-11"	5´-2"	4´-6"	5´-9"	4´-10"	—	—	—
2-800S162-68	9´-1"	8´-4"	7´-6"	6´-10"	6´-3"	7´-4"	6´-6"	5´-9"	5´-0"	4´-4"
2-800S162-97	11´-0"	10´-4"	9´-8"	9´-2"	8´-9"	9´-6"	8´-11"	8´-4"	7´-11"	7´-6"
2-1000S162-43	6´-0"	4´-11"	—	—	—	—	—	—	—	—
2-1000S162-54	8´-4"	7´-4"	6´-4"	5´-7"	4´-9"	6´-3"	5´-2"	—	—	—
2-1000S162-68	10´-9"	9´-9"	8´-10"	8´-0"	7´-3"	8´-7"	7´-7"	6´-7"	5´-9"	5´-0"
2-1000S162-97	13´-1"	12´-3"	11´-6"	10´-11"	10´-4"	11´-4"	10´-7"	10´-0"	9´-5"	8´-11"
2-1200S162-43	6´-1"	—	—	—	—	—	—	—	—	—
2-1200S162-54	8´-9"	7´-8"	6´-7"	5´-9"	—	6´-6"	—	—	—	—
2-1200S162-68	11´-6"	10´-4"	9´-4"	8´-4"	7´-7"	9´-1"	8´-0"	6´-11"	6´-0"	—
2-1200S162-97	15´-1"	14´-1"	13´-3"	12´-7"	12´-0"	13´-1"	12´-3"	11´-6"	11´-0"	10´-2"

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 0.0479 kPa, 1 pound per square inch = 6.895 kPa.

a. Deflection criteria: L/360 for live loads, L/240 for total loads.

b. Design load assumptions:
Roof/Ceiling dead load is 12 psf.
Attic dead load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the header.

TABLE R603.6(3) BOX-BEAM HEADER SPANS Headers supporting one floor, roof and ceiling (33 ksi steel)^{a, b, c}

MEMBER DESIGNATION	GROUND SNOW LOAD					GROUND SNOW LOAD
	(20 psf)					(30 psf)
	Building width^c					Building width^c
	24´	28´	32´	36´	40´	24´	28´	32´	36´	40´
2-350S162-33	—	—	—	—	—	—	—	—	—	—
2-350S162-43	2´-6"	—	—	—	—	2´-5"	—	—	—	—
2-350S162-54	3´-6"	3´-0"	2´-6"	—	—	3´-4"	2´-10"	2´-4"	—	—
2-350S162-68	4´-4"	3´-11"	3´-5"	3´-0"	2´-7"	4´-3"	3´-9"	3´-3"	2´-10"	2´-6"
2-350S162-97	5´-4"	5´-0"	4´-7"	4´-4"	4´-1"	5´-4"	4´-11"	4´-6"	4´-3"	4´-0"
2-550S162-33	—	—	—	—	—	—	—	—	—	—
2-550S162-43	3´-9"	3´-0"	—	—	—	3´-7"	2´-11"	—	—	—
2-550S162-54	5´-0"	4´-4"	3´-9"	3´-2"	—	4´-10"	4´-2"	3´-6"	3´-0"	—
2-550S162-68	6´-3"	5´-6"	5´-0"	4´-5"	4´-0"	6´-1"	5´-5"	4´-9"	4´-3"	3´-9"
2-550S162-97	7´-8"	7´-2"	6´-8"	6´-4"	6´-0"	7´-6"	7´-0"	6´-6"	6´-2"	5´-10"
2-800S162-33	—	—	—	—	—	—	—	—	—	—
2-800S162-43	4´-6"	—	—	—	—	4´-4"	—	—	—	—
2-800S162-54	6´-6"	5´-7"	4´-10"	4´-1"	—	6´-4"	5´-5"	4´-7"	—	—
2-800S162-68	8´-2"	7´-3"	6´-6"	5´-10"	5´-2"	8´-0"	7´-0"	6´-4"	5´-6"	5´-0"
2-800S162-97	10´-1"	9´-6"	8´-11"	8´-6"	8´-0"	10´-0"	9´-4"	8´-9"	8´-3"	7´-11"
2-1000S162-43	4´-9"	—	—	—	—	—	—	—	—	—
2-1000S162-54	7´-1"	6´-0"	5´-2"	—	—	6´-10"	5´-10"	4´-11"	—	—
2-1000S162-68	9´-7"	8´-6"	7´-7"	6´-9"	6´-0"	9´-4"	8´-4"	7´-4"	6´-6"	5´-9"
2-1000S162-97	12´-0"	11´-3"	10´-7"	10´-0"	9´-6"	11´-11"	11´-1"	10´-5"	9´-11"	9´-5"
2-1200S162-43	—	—	—	—	—	—	—	—	—	—
2-1200S162-54	7´-6"	6´-4"	—	—	—	7´-2"	6´-0"	—	—	—
2-1200S162-68	10´-1"	9´-0"	8´-0"	7´-0"	6´-2"	9´-11"	8´-9"	7´-9"	6´-9"	6´-0"
2-1200S162-97	14´-0"	13´-0"	12´-3"	11´-7"	11´-0"	13´-9"	12´-10"	12´-0"	11´-6"	10´-11"

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 0.0479 kPa, 1 pound per square inch = 6.895 kPa.

a. Deflection criteria: L/360 for live loads, L/240 for total loads.

b. Design load assumptions:
Roof/Ceiling dead load is 12 psf.
Attic dead load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the header.

TABLE R603.6(4) BOX-BEAM HEADER SPANS Headers supporting one floor, roof and ceiling (33 ksi steel)^{a, b, c}

MEMBER DESIGNATION	GROUND SNOW LOAD					GROUND SNOW LOAD
	(50 psf)					(70 psf)
	Building width^c					Building width^c
	24´	28´	32´	36´	40´	24´	28´	32´	36´	40´
2-350S162-33	—	—	—	—	—	—	—	—	—	—
2-350S162-43	—	—	—	—	—	—	—	—	—	—
2-350S162-54	2´-6"	2´-1"	—	—	—	—	—	—	—	—
2-350S162-68	3´-6"	3´-0"	2´-6"	2´-2"	—	2´-9"	2´-2"	—	—	—
2-350S162-97	4´-9"	4´-5"	4´-1"	3´-10"	3´-7"	4´-2"	3´-11"	3´-7"	3´-4"	2´-11"
2-550S162-33	—	—	—	—	—	—	—	—	—	—
2-550S162-43	—	—	—	—	—	—	—	—	—	—
2-550S162-54	3´-11"	3´-4"	—	—	—	2´-10"	—	—	—	—
2-550S162-68	5´-2"	4´-6"	3´-11"	3´-4"	2´-10"	4´-1"	3´-5"	2´-9"	—	—
2-550S162-97	6´-10"	6´-4"	6´-0"	5´-7"	5´-4"	6´-1"	5´-7"	5´-4"	4´-9"	4´-4"
2-800S162-33	—	—	—	—	—	—	—	—	—	—
2-800S162-43	—	—	—	—	—	—	—	—	—	—
2-800S162-54	5´-1"	4´-2"	—	—	—	—	-—	—	—	—
2-800S162-68	6´-9"	6´-1"	5´-2"	4´-5"	—	5´-5"	4´-6"	—	—	—
2-800S162-97	9´-1"	8´-6"	8´-0"	7´-6"	7´-1"	8´-2"	7´-7"	7´-0"	6´-5"	5´-10"
2-1000S162-43	—	—	—	—	—	—	—	—	—	—
2-1000S162-54	5´-6"	—	—	—	—	—	—	—	—	—
2-1000S162-68	7´-10"	6´-11"	6´-0"	5´-2"	—	6´-4"	5´-4"	—	—	—
2-1000S162-97	10´-10"	10´-1"	9´-6"	9´-0"	8´-4"	9´-9"	9´-2"	8´-4"	7´-7"	7´-0"
2-1200S162-43	—	—	—	—	—	—	—	—	—	—
2-1200S162-54	5´-7"	—	—	—	—	—	—	—	—	—
2-1200S162-68	8´-4"	7´-2"	6´-2"	—	—	6´-6"	—	—	—	—
2-1200S162-97	12´-6"	11´-8"	11´-0"	10´-4"	9´-6"	11´-3"	10´-6"	9´-6"	8´-8"	8´-0"

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 0.0479 kPa, 1 pound per square inch = 6.895 kPa.

a. Deflection criteria: L/360 for live loads, L/240 for total loads.

b. Design load assumptions:
Roof/Ceiling dead load is 12 psf.
Attic dead load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the header.

TABLE R603.6(5) BACK-TO-BACK HEADER SPANS Headers supporting roof and ceiling only (33 ksi steel)^{a, b, c}

MEMBER DESIGNATION	GROUND SNOW LOAD					GROUND SNOW LOAD
	(20 psf)					(30 psf)
	Building width^c					Building width^c
	24´	28´	32´	36´	40´	24´	28´	32´	36´	40´
2-350S162-33	3´-7"	3´-1"	2´-8"	2´-4"	—	2´-11"	2´-6"	—	—	—
2-350S162-43	5´-0"	4´-8"	4´-4"	3´-10"	3´-7"	4´-6"	4´-0"	3´-8"	3´-4"	2´-11"
2-350S162-54	5´-9"	5´-5"	5´-0"	4´-9"	4´-6"	5´-3"	4´-10"	4´-6"	4´-4"	3´-11"
2-350S162-68	6´-7"	6´-2"	5´-9"	5´-5"	5´-2"	5´-11"	5´-7"	5´-2"	4´-10"	4´-7"
2-350S162-97	7´-11"	7´-6"	6´-11"	6´-7"	6´-6"	7´-4"	6´-9"	6´-4"	5´-11"	5´-8"
2-550S162-33	5´-5"	4´-9"	4´-4"	3´-9"	3´-5"	4´-7"	3´-11"	3´-5"	2´-11"	—
2-550S162-43	7´-3"	6´-8"	6´-2"	5´-8"	5´-4"	6´-6"	5´-10"	5´-5"	4´-10"	4´-6"
2-550S162-54	8´-2"	7´-8"	7´-2"	6´-9"	6´-5"	7´-5"	6´-10"	6´-6"	6´-1"	5´-9"
2-550S162-68	9´-4"	8´-8"	8´-7"	7´-8"	7´-4"	8´-6"	7´-10"	7´-5"	6´-11"	6´-7"
2-550S162-97	11´-3"	10´-6"	9´-11"	9´-4"	8´-10"	10´-3"	9´-6"	8´-11"	8´-6"	8´-0"
2-800S162-33	6´-9"	5´-11"	5´-5"	4´-9"	4´-4"	6´-9"	5´-0"	4´-5"	3´-9"	—
2-800S162-43	9´-1"	8´-6"	7´-9"	7´-3"	6´-8"	8´-3"	7´-6"	6´-9"	6´-3"	5´-8"
2-800S162-54	10´-9"	10´-1"	9´-6"	8´-11"	8´-6"	9´-9"	9´-2"	8´-7"	8´-2"	7´-8"
2-800S162-68	12´-3"	11´-5"	10´-9"	10´-2"	9´-8"	11´-2"	10´-5"	9´-9"	9´-4"	8´-9"
2-800S162-97	14´-9"	13´-9"	13´-0"	12´-4"	11´-8"	13´-6"	12´-7"	11´-10"	11´-2"	10´-8"
2-1000S162-43	10´-1"	9´-5"	8´-8"	8´-0"	7´-6"	9´-1"	8´-4"	7´-7"	6´-11"	6´-5"
2-1000S162-54	12´-0"	11´-5"	10´-7"	10´-0"	9´-6"	11´-0"	10´-3"	9´-7"	9´-1"	8´-6"
2-1000S162-68	14´-6"	13´-6"	12´-8"	12´-0"	11´-6"	13´-2"	12´-4"	11´-7"	10´-11"	10´-6"
2-1000S162-97	17´-6"	16´-5"	15´-5"	14´-7"	13´-10"	16´-0"	14´-10"	14´-0"	13´-4"	12´-8"
2-1200S162-43	11´-0"	10´-4"	9´-6"	8´-9"	8´-2"	10´-0"	9´-1"	8´-4"	7´-7"	7´-0"
2-1200S162-54	13´-1"	12´-3"	11´-6"	10´-10"	10´-5"	11´-10"	11´-1"	10´-6"	9´-10"	9´-4"
2-1200S162-68	15´-6"	14´-6"	13´-7"	12´-10"	12´-3"	14´-1"	13´-2"	12´-5"	11´-9"	11´-2"
2-1200S162-97	20´-2"	18´-9"	17´-9"	16´-9"	16´-0"	18´-4"	17´-2"	16´-2"	15´-5"	14´-7"

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 0.0479 kPa, 1 pound per square inch = 6.895 kPa.

a. Deflection criteria: L/360 for live loads, L/240 for total loads.

b. Design load assumptions:
Roof/Ceiling dead load is 12 psf.
Attic dead load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the header.

TABLE R603.6(6) BACK-TO-BACK HEADER SPANS Headers supporting roof and ceiling only (33 ksi steel)^{a, b, c}

MEMBER DESIGNATION	GROUND SNOW LOAD					GROUND SNOW LOAD
	(50 psf)					(70 psf)
	Building width^c					Building width^c
	24´	28´	32´	36´	40´	24´	28´	32´	36´	40´
2-350S162-33	—	—	—	—	—	—	—	—	—	—
2-350S162-43	3´-2"	2´-8"	2´-4"	—	—	2´-3"	—	—	—	—
2-350S162-54	4´-3"	3´-8"	3´-5"	2´-11"	2´-8"	3´-4"	2´-9"	2´-5"	2´-0"	1´-7"
2-350S162-68	4´-9"	4´-6"	4´-2"	3´-10"	3´-7"	4´-1"	3´-9"	3´-5"	3´-1"	2´-8"
2-350S162-97	5´-10"	5´-6"	5´-2"	4´-10"	4´-7"	5´-0"	4´-8"	4´-5"	4´-2"	3´-10"
2-550S162-33	2´-9"	—	—	—	—	—	—	—	—	—
2-550S162-43	4´-9"	4´-2"	3´-8"	3´-3"	2´-8"	3´-6"	2´-10"	—	—	—
2-550S162-54	6´-0"	5´-6"	4´-11"	4´-6"	4´-1"	4´-10"	4´-4"	3´-10"	3´-6"	2´-11"
2-550S162-68	6´-10"	6´-5"	5´-11"	5´-8"	5´-4"	5´-11"	5´-6"	4´-11"	4´-7"	4´-3"
2-550S162-97	8´-5"	7´-7"	4´-4"	6´-10"	6´-7"	7´-3"	6´-8"	6´-4"	5´-11"	5´-8"
2-800S162-33	3´-8"	—	—	—	—	—	—	—	—	—
2-800S162-43	6´-1"	5´-5"	4´-9"	4´-2"	3´-8"	4´-7"	3´-9"	—	—	—
2-800S162-54	8´-0"	7´-4"	6´-8"	6´-1"	5´-7"	6´-6"	5´-8"	5´-3"	4´-8"	4´-3"
2-800S162-68	9´-1"	8´-6"	7´-11"	7´-7"	7´-1"	7´-10"	7´-5"	6´-9"	6´-3"	5´-9"
2-800S162-97	11´-1"	10´-4"	9´-8"	9´-2"	8´-9"	9´-8"	8´-11"	8´-5"	7´-11"	7´-7"
2-1000S162-43	6´-9"	6´-0"	5´-5"	4´-9"	4´-2"	5´-2"	4´-5"	—	—	—
2-1000S162-54	8´-11"	8´-2"	7´-6"	6´-10"	6´-6"	7´-4"	6´-7"	5´-10"	5´-4"	4´-9"
2-1000S162-68	10´-9"	10´-1"	9´-6"	8´-11"	8´-6"	9´-5"	8´-9"	8´-1"	7´-6"	6´-10"
2-1000S162-97	13´-1"	12´-4"	11´-6"	10´-10"	10´-5"	11´-5"	10´-7"	9´-11"	9´-6"	8´-11"
2-1200S162-43	7´-6"	6´-7"	5´-10"	5´-2"	4´-7"	5´-8"	4´-10"	—	—	—
2-1200S162-54	9´-9"	8´-10"	8´-1"	7´-6"	6´-10"	7´-11"	7´-2"	6´-6"	5´-9"	5´-3"
2-1200S162-68	11´-7"	10´-9"	10´-2"	9´-7"	9´-1"	10´-2"	9´-6"	8´-7"	7´-11"	7´-5"
2-1200S162-97	15´-1"	14´-1"	13´-4"	12´-7"	12´-0"	13´-2"	12´-4"	11´-7"	10´-11"	10´-6"

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 0.0479 kPa, 1 pound per square inch = 6.895 kPa.

a. Deflection criteria: L/360 for live loads, L/240 for total loads.

b. Design load assumptions:
Roof/Ceiling dead load is 12 psf.
Attic dead load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the header.

TABLE R603.6(7) BACK-TO-BACK HEADER SPANS Headers supporting one floor, roof and ceiling (33 ksi steel)^{a, b, c}

MEMBER DESIGNATION	GROUND SNOW LOAD					GROUND SNOW LOAD
	(20 psf)					(30 psf)
	Building width^c					Building width^c
	24´	28´	32´	36´	40´	24´	28´	32´	36´	40´
2-350S162-33	—	—	—	—	—	—	—	—	—	—
2-350S162-43	2´-7"	2´-1"	—	—	—	2´-6"	—	—	—	—
2-350S162-54	3´-8"	3´-3"	2´-9"	2´-6"	2´-1"	3´-7"	3´-1"	2´-8"	2´-5"	1´-11"
2-350S162-68	4´-5"	4´-0"	3´-9"	3´-6"	3´-1"	4´-4"	3´-11"	3´-8"	3´-5"	3´-0"
2-350S162-97	5´-5"	4´-11"	4´-8"	4´-5"	4´-1"	5´-4"	4´-10"	4´-7"	4´-4"	4´-0"
2-550S162-33	—	—	—	—	—	—	—	—	—	—
2-550S162-43	4´-1"	3´-6"	2´-10"	2´-5"	—	3´-11"	3´-5"	2´-9"	—	—
2-550S162-54	5´-5"	4´-9"	4´-4"	3´-10"	3´-6"	5´-3"	4´-8"	4´-3"	3´-9"	3´-5"
2-550S162-68	6´-6"	5´-10"	5´-6"	5´-1"	4´-8"	6´-2"	5´-9"	5´-5"	4´-11"	4´-7"
2-550S162-97	7´-8"	7´-2"	6´-8"	6´-5"	5´-11"	7´-7"	7´-0"	6´-7"	6´-3"	5´-10"
2-800S162-33	—	—	—	—	—	—	—	—	—	—
2-800S162-43	5´-4"	4´-7"	3´-10"	3´-4"	—	5´-1"	4´-5"	3´-9"	—	—
2-800S162-54	7´-3"	6´-6"	5´-10"	5´-4"	4´-9"	6´-11"	6´-4"	5´-8"	5´-3"	4´-8"
2-800S162-68	8´-5"	7´-9"	7´-5"	6´-9"	6´-5"	8´-4"	7´-8"	7´-3"	6´-8"	6´-3"
2-800S162-97	10´-2"	9´-6"	8´-11"	8´-6"	8´-1"	10´-0"	9´-5"	8´-9"	8´-5"	7´-10"
2-1000S162-43	5´-9"	5´-1"	4´-5"	3´-9"	—	5´-8"	4´-11"	4´-4"	—	—
2-1000S162-54	7´-11"	7´-3"	6´-7"	5´-11"	5´-5"	7´-9"	7´-1"	6´-5"	5´-9"	5´-4"
2-1000S162-68	9´-11"	9´-4"	8´-9"	8´-1"	7´-7"	9´-10"	9´-2"	8´-7"	7´-11"	7´-5"
2-1000S162-97	12´-1"	11´-4"	10´-8"	10´-0"	9´-7"	11´-11"	11´-1"	10´-6"	9´-10"	9´-6"
2-1200S162-43	6´-6"	5´-8"	4´-10"	4´-2"	—	6´-4"	5´-6"	4´-8"	—	—
2-1200S162-54	8´-8"	7´-10"	7´-2"	6´-6"	5´-11"	8´-6"	7´-8"	6´-11"	6´-5"	5´-9"
2-1200S162-68	10´-8"	9´-11"	9´-5"	8´-8"	8´-1"	10´-6"	9´-9"	9´-3"	8´-6"	7´-11"
2-1200S162-97	13´-11"	13´-0"	12´-4"	11´-7"	11´-1"	13´-9"	12´-10"	12´-1"	11´-6"	10´-10"

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 0.0479 kPa, 1 pound per square inch = 6.895 kPa.

a. Deflection criteria: L/360 for live loads, L/240 for total loads.

b. Design load assumptions:
    Second floor dead load is 10 psf.
    Roof/Ceiling dead load is 12 psf.
    Second floor live load is 30 psf.
    Roof/ceiling load is 12 psf.
    Attic dead load is 10 psf.

c. Building width is in the direction of horizontal framing members supported by the header.

TABLE R603.6(8) BACK-TO-BACK HEADER SPANS Headers supporting one floor, roof and ceiling (33 ksi steel)^{a, b, c}

MEMBER DESIGNATION	GROUND SNOW LOAD					GROUND SNOW LOAD
	(50 psf)					(70 psf)
	Building width^c					Building width^c
	24´	28´	32´	36´	40´	24´	28´	32´	36´	40´
2-350S162-33	—	—	—	—	—	—	—	—	—	—
2-350S162-43	—	—	—	—	—	—	—	—	—	—
2-350S162-54	2´-11"	2´-6"	2´-2"	—	—	2´-4"	—	—	—	—
2-350S162-68	3´-10"	3´-6"	3´-2"	2´-9"	2´-6"	3´-4"	2´-10"	2´-6"	2´-3"	1´-10"
2-350S162-97	4´-9"	4´-5"	4´-2"	3´-10"	3´-8"	4´-3"	3´-10"	3´-8"	3´-5"	3´-2"
2-550S162-33	—	—	—	—	—	—	—	—	—	—
2-550S162-43	3´-1"	2´-5"	—	—	—	—	—	—	—	—
2-550S162-54	4´-6"	3´-10"	3´-6"	3´-0"	2´-7"	3´-8"	3´-1"	2´-7"	2´-1"	—
2-550S162-68	5´-7"	5´-1"	4´-8"	4´-4"	3´-11"	4´-10"	4´-5"	3´-10"	3´-6"	3´-3"
2-550S162-97	6´-10"	6´-5"	5´-11"	5´-8"

Section R603 Steel Wall Framing

R603.1 General

R603.1.1 Applicability Limits

R603.1.2 In-Line Framing

R603.2 Structural Framing

R603.2.1 Material

R603.2.2 Identification

R603.2.3 Corrosion Protection

R603.2.4 Fastening Requirements

R603.3 Wall Construction

R603.3.1 Wall to Foundation or Floor Connections

R603.3.2 Load-Bearing Walls

R603.3.3 Stud Bracing

R603.3.4 Cutting and Notching

R603.3.5 Hole Patching

R603.3.6 Splicing

R603.4 Corner Framing

R603.5 Exterior Wall Covering

R603.6 Headers