Page 151 - ICC IEBC 2018

APPENDIX C

than three framing members, and extend not less than 6 feet existing and added studs shall be not greater than 24
(183 cm) measured perpendicularly from the gable end plus inches (64 mm). Additional gable end wall studs shall not
1
2 / inches (64 mm) beyond the last top chord or bottom be required at locations where their length would be 3 feet
2
chord member (rafter or ceiling joist) from the gable end as (914 mm) or less. Each end of each required new stud
shown in Figures C104.2(1), C104.2(2), C104.2(3) and shall be attached to the existing roofing framing members
C104.2(4). (truss top chord or rafter and truss bottom chord or ceiling
[BS] C104.2.1 Existing gable end studs. If the spacing of joist) using not fewer than two 3-inch (76 mm) toenail fas-
existing vertical gable end studs is greater than 24 inches teners (#8 wood screws or 10d nails) and a metal connec-
(64 mm), a new stud and corresponding horizontal braces tor with minimum uplift capacity of 175 pounds (778 N),
1
shall be installed such that the maximum spacing between or nail plates with not fewer than four 1 / -inch-long (32
4
mm) fasteners (No. 8 wood screws or 8d nails).

[BS] FIGURE C104.1
BASIC GABLE END RETROFIT METHODOLOGY

[BS] TABLE C104.2
STUD LENGTH LIMITATIONS BASED ON EXPOSURE AND DESIGN WIND SPEED
EXPOSURE MAXIMUM 3-SEC GUST b
CATEGORY BASIC WIND SPEED a MAXIMUM HEIGHT OF GABLE END RETROFIT STUD
C 140 8'-0" 11'-3" 14'-9" 16'-0"
C 150 7'-6" 10'-6" 13'-6" 16'-0"
C 165 7'-0" 10'-0" 12'-3" 16'-0"
C 180 7'-0" 10'-0" 12'-3" 16'-0"
C 190 6'-6" 8'-9" 11'-0" 16'-0"
B 140 8'-0" 12'-3" 16'-0" NR c
B 150 8'-0" 11'-3" 14'-9" 16'-0"
B 165 8'-0" 11'-3" 14'-9" 16'-0"
B 180 7'-6" 10'-6" 13'-6" 16'-0"
B 190 7'-0" 10'-0" 12'-3" 16'-0"
Retrofit Configuration A B C D
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.
NR = Not Required.
a. Interpolation between given wind speeds is not permitted.
b. Existing gable end studs less than or equal to 3 feet 0 inches in height shall not require retrofitting.
c. Configuration C is acceptable to 16 feet 0 inches maximum height.

132 2018 INTERNATIONAL EXISTING BUILDING CODE ®
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