Document HAO B70-1174 Page 1 of 4 REV 9/16
2014 Oregon Residential Specialty Code (ORSC) Section R602.10
From table R602.10, identify the wall bracing type used: ____________________________________
Wood structural panels shall be not less than 7/16 plywood (or equal) with a span rating of
24/16 with a stud spacing of 16-inches on center, and nailed with 8d nails at 6-inches on
center at the edges (staggered at panel edges), and 12-inches on center in the field.
The braced wall lines shall be measured as specified by section R602.10.1, ORSC.
Braced wall panels shall be constructed in accordance with the following:
(a) Intermittent Bracing, Section R602.10.2, ORSC
(b) Continuous, Sections R602.10.4 and R602.10.5, ORSC
Identify which method is used: ____________________________________________________________
The length of the bracing along each braced wall line shall be the greater of that required by
the design wind speed and braced wall line spacing in accordance with table R602.10.1.2(1).
(Section R602.10.1.2, ORSC)
Braced wall panels located at exterior walls that support roof rafters, or trusses shall have
framing members connected in accordance with section R602.10.1.2.1, ORSC.
Method used: ____________________________________________________________________________
Braced wall panels shall be located in accordance with Figure R602.10.1.4 (1), and shall not
be more than 25-feet on center, and shall be permitted to begin no more than 12.5-feet from
the end of the braced wall line (Section R602.10.1.4, ORSC). In zone D, braced wall lines shall
have a braced panel at each end of the braced wall line; except when WSP method is used,
the required end panels may be located not more than 8-feet from the ends of the braced
wall line provided they meet the requirements of section R602.10.1.4.1, ORSC.
Braced wall lines in seismic design category D shall not be spaced more than 25-feet on
center in both longitudinal and transverse directions. Exception: In one- and two-story
buildings, spacing between two adjacent braced wall lines shall not exceed 35-feet on
center in order to accommodate one single room not exceeding 900 square feet. (Section
R602.10.1.5, ORSC)
LATERAL BRACING CALCULATIONS
CITY OF BEAVERTON
Community Development Department
Building Division
12725 SW Millikan Way / PO Box 4755, Beaverton, OR 97076
Phone: (503) 526-2493 Fax: (503) 526-2550
General Information (503) 526-2222 V/TDD
BeavertonOregon.gov
Clear Form
Document HAO B70-1174 Page 2 of 4 REV 9/16
Use tables R602.10.1.2 (1), R602.10.1.2 (1), and R602.10.1.2 (2) to complete your calculations.
Job Site Information:
Date: ____________________________
Job Name: _________________________________ Permit number: ___________________
Job Address: ________________________________ City: _____________________________
Check which floor level this applies to: First Floor Second Floor
Number of Stories: ___________________________ Seismic Zone: ____________________
Eve Height: __________________________________ Wall Height: ______________________
Wind Speed Used: ___________________________ Wind Exposure: ___________________
Insert lateral bracing plans here (see next page for example and instructions):
Document HAO B70-1174 Page 3 of 4 REV 9/16
Identify your braced wall lines and braced wall locations (length and type). The following is
an example of what your plan should resemble. Color was used in the example for clarity;
however, it is not required. Plan needs to be to scale.
Lateral Bracing Plan Scale: __________
Enter factors in the chart below to calculate the total wind adjustment factor:
Wall line ID:
1
2
3
4
A
B
C
D
E
Wind Exposure Factor (footnote b):
Eave to Ridge Height Factor (footnote c):
Wall Height Factor (footnote d):
Number of Braced Wall Lines Factor (footnote e):
Gypsum Wall Board Factor (footnote f):
Gypsum Wall Board Nailing Factor (footnote g):
Hold-down Factor (footnote i):
Total Wind Adjustment Factor:
Note: If you are not going to take the adjustment factor or the factor does not apply, then a value of 1
or 1.0 must be entered for the calculator to work.
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
Document HAO B70-1174 Page 4 of 4 REV 9/16
Once factors have been entered to determine the total wind adjustment factor, enter the
amount of bracing provided on the plan in the chart below to show that the bracing meets
or exceeds code requirements.
Use the furthest distance to an adjacent wall line on either side.
Example: Braced line spacing for A = 20 (20 feet is the only adjacent line)
B = 34 (34 feet is the furthest adjacent line)
C = 34 (34 feet is the only adjacent line)
Braced
Wall Line
Bracing
Method
Braced Wall
Line Spacing
Required
Bracing
Total Wind
ADJ Factor
Total Required
Bracing Length
Length
Provided
PASS
or FAIL
1
2
3
4
5
A
B
C
D
E
Note: If all of the “PASS” or “FAIL” boxes say, “PASS”, then the calculator part is complete and ready to
be printed for submittal. If any of the boxes say, “FAIL”, then you will need to go back and adjust your
factors, or amount of bracing provided.
0
0.00
0
0.00
0
0.00
0
0.00
0
0.00
0
0.00
0
0.00
0
0.00
0
0.00
0
0.00