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// CODE SNIPPET

R602.10.6.5 Wall Bracing for Dwellings With Stone and Masonry Veneer in Seismic Design Categories D0, D1 and D2

Residential Code 2015 of Utah > 6 Wall Construction > R602 Wood Wall Framing > R602.10 Wall Bracing > R602.10.6 Construction of Methods ABW, PFH, PFG, CS-PF and BV-WSP > R602.10.6.5 Wall Bracing for Dwellings With Stone and Masonry Veneer in Seismic Design Categories D0, D1 and D2
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Where stone and masonry veneer are installed in accordance with Section R703.8, wall bracing on exterior braced wall lines and braced wall lines on the interior of the building, backing or perpendicular to and laterally supporting veneered walls shall comply with this section.

Where dwellings in Seismic Design Categories D0, D1 and D2 have stone or masonry veneer installed in accordance with Section R703.8, and the veneer does not exceed the first-story height, wall bracing shall be in accordance with Section R602.10.3.

Where detached one- or two-family dwellings in Seismic Design Categories D0, D1 and D2 have stone or masonry veneer installed in accordance with Section R703.8, and the veneer exceeds the first-story height, wall bracing at exterior braced wall lines and braced wall lines on the interior of the building shall be constructed using Method BV-WSP in accordance with this section and Figure R602.10.6.5. Cripple walls shall not be permitted, and required interior braced wall lines shall be supported on continuous foundations.

Townhouses in Seismic Design Categories D0, D1 and D2 with stone or masonry veneer exceeding the first-story height shall be designed in accordance with accepted engineering practice.

TABLE R602.10.6.5 METHOD BV-WSP WALL BRACING REQUIREMENTS
SEISMIC DESIGN
CATEGORY
STORY BRACED WALL LINE LENGTH (FEET) SINGLE-STORY
HOLD-DOWN
FORCE
(pounds)a
CUMULATIVE
HOLD-DOWN
FORCE
(pounds)b
10 20 30 40 50
Minimum Total Length (feet) of Braced Wall Panels
Required Along each Braced Wall Line
D0 4.0 7.0 10.5 14.0 17.5 N/A —
4.0 7.0 10.5 14.0 17.5 1900 —
4.5 9.0 13.5 18.0 22.5 3500 5400
6.0 12.0 18.0 24.0 30.0 3500 8900
D1 4.5 9.0 13.5 18.0 22.5 2100 —
4.5 9.0 13.5 18.0 22.5 3700 5800
6.0 12.0 18.0 24.0 30.0 3700 9500
D2 5.5 11.0 16.5 22.0 27.5 2300 —
5.5 11.0 16.5 22.0 27.5 3900 6200
NP NP NP NP NP N/A N/A

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 0.479 kPa, 1 pound-force = 4.448 N.
NP = Not Permitted.

N/A = Not Applicable.
  1. Hold-down force is minimum allowable stress design load for connector providing uplift tie from wall framing at end of braced wall panel at the noted story to wall framing at end of braced wall panel at the story below, or to foundation or foundation wall. Use single-story hold-down force where edges of braced wall panels do not align; a continuous load path to the foundation shall be maintained.
  2. Where hold-down connectors from stories above align with stories below, use cumulative hold-down force to size middle- and bottom-story hold-down connectors.

FIGURE R602.10.6.5
METHOD BV-WSP—WALL BRACING FOR DWELLINGS WITH STONE AND MASONRY VENEER IN SEISMIC DESIGN CATEGORIES D0, D1 and D2

R602.10.6.5.1 Length of Bracing

The length of bracing along each braced wall line shall be the greater of that required by the ultimate design wind speed and braced wall line spacing in accordance with Table R602.10.3(1) as adjusted by the factors in Table R602.10.3(2) or the seismic design category and braced wall line length in accordance with Table R602.10.6.5. Angled walls shall be permitted to be counted in accordance with Section R602.10.1.4, and braced wall panel location shall be in accordance with Section R602.10.2.2. Spacing between braced wall lines shall be in accordance with Table R602.10.1.3. The seismic adjustment factors in Table R602.10.3(4) shall not be applied to the length of bracing determined using Table R602.10.6.5, except that the bracing amount increase for braced wall line spacing greater than 25 feet (7620 mm) in accordance with Table R602.10.1.3 shall be required. The minimum total length of bracing in a braced wall line, after all adjustments have been taken, shall not be less than 48 inches (1219 mm) total.

Related Code Sections


R602.10.6.5 Wall Construction, Wall Bracing for Dwellings With Stone and Masonry Veneer in Seismic Design Categories D0, D1 and D2
in Seismic Design Categories D 0 , D 1 and D 2 have stone or masonry veneer installed in accordance with Section R703.8, and the veneer does ...
Residential Code 2015 of Utah > 6 Wall Construction > R602 Wood Wall Framing > R602.10 Wall Bracing > R602.10.6 Construction of Methods ABW, PFH, PFG, CS-PF and BV-WSP > R602.10.6.5 Wall Bracing for Dwellings With Stone and Masonry Veneer in Seismic Design Categories D0, D1 and D2
R603.9.5.2 Wall Construction, Seismic Design Categories D0, D1 and D2
In Seismic Design Categories D 0 , D 1 and D 2 , the required length of structural sheathing and overturning anchorage shall be determined ...
Residential Code 2015 of Utah > 6 Wall Construction > R603 Cold-Formed Steel Wall Framing > R603.9 Structural Sheathing > R603.9.5 Structural Sheathing for Stone and Masonry Veneer > R603.9.5.2 Seismic Design Categories D0, D1 and D2
R301.2.2.3.2 Building Planning, Stone and Masonry Veneer
Anchored stone and masonry veneer shall comply with the requirements of Sections R702.1 and R703 ...
Residential Code 2015 of Utah > 3 Building Planning > R301 Design Criteria > R301.2 Climatic and Geographic Design Criteria > R301.2.2 Seismic Provisions > R301.2.2.3 Seismic Design Categories D0, D1 and D2 > R301.2.2.3.2 Stone and Masonry Veneer
R403.1.2 Foundations, Continuous Footing in Seismic Design Categories D0, D1 and D2
Exterior walls of buildings located in Seismic Design Categories D 0 , D 1 and D 2 shall be supported by continuous solid or fully grouted masonry ...
Residential Code 2015 of Utah > 4 Foundations > R403 Footings > R403.1 General > R403.1.2 Continuous Footing in Seismic Design Categories D0, D1 and D2
R404.1.4 Foundations, Seismic Design Category D0, D1 or D2
In buildings assigned to Seismic Design Category D 0 , D 1 or D 2 , as established in Table R301.2(1), masonry foundation walls shall comply ...
Residential Code 2015 of Utah > 4 Foundations > R404 Foundation and Retaining Walls > R404.1 Concrete and Masonry Foundation Walls > R404.1.4 Seismic Design Category D0, D1 or D2
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