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2308.5.9 Cutting and Notching
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In exterior walls and bearing partitions, wood studs are permitted to be cut or notched to a depth not exceeding 25 percent of the width of the stud. Cutting or notching of studs to a depth not greater than 40 percent of the width of the stud is permitted in nonbearing partitions not supporting loads other than the weight of the partition.
Related Code Sections
2308.5.9 Wood, Cutting and Notching
In exterior walls and bearing partitions, wood studs are permitted to be cut or notched to a depth not exceeding 25 percent of the width of the stud ...
Building Code 2018 of Illinois > 23 Wood > 2308 Conventional Light-Frame Construction > 2308.5 Wall Construction > 2308.5.9 Cutting and Notching
2303.4.5 Wood, Alterations to Trusses
Truss members and components shall not be cut, notched, drilled, spliced or otherwise altered in any way without written concurrence and approval ...
Building Code 2018 of Illinois > 23 Wood > 2303 Minimum Standards and Quality > 2303.4 Trusses > 2303.4.5 Alterations to Trusses