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// CODE SNIPPET

R502.8 Cutting, Drilling and Notching

Los Angeles Residential Code > 5 Floors > R502 Wood Floor Framing > R502.8 Cutting, Drilling and Notching
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Structural floor members shall not be cut, bored or notched in excess of the limitations specified in this section. See Figure R502.8.

For SI: 1 inch = 25.4 mm.

FIGURE R502.8

CUTTING, NOTCHING AND DRILLING

R502.8.1 Sawn Lumber

Notches in solid lumber joists, rafters and beams shall not exceed one-sixth of the depth of the member, shall not be longer than one-third of the depth of the member and shall not be located in the middle one-third of the span. Notches at the ends of the member shall not exceed one-fourth the depth of the member. The tension side of members 4 inches (102 mm) or greater in nominal thickness shall not be notched except at the ends of the members. The diameter of holes bored or cut into members shall not exceed one-third the depth of the member. Holes shall not be closer than 2 inches (51 mm) to the top or bottom of the member, or to any other hole located in the member. Where the member is also notched, the hole shall not be closer than 2 inches (51 mm) to the notch.

R502.8.2 Engineered Wood Products

Cuts, notches and holes bored in trusses, structural composite lumber, structural glue-laminated members, cross-laminated timber members or I-joists are prohibited except where permitted by the manufacturer's recommendations or where the effects of such alterations are specifically considered in the design of the member by a registered design professional.

Related Code Sections


R502.8 Floors, Cutting, Drilling and Notching
inch = 25.4 mm. FIGURE R502.8 CUTTING, NOTCHING AND DRILLING ...
Los Angeles Residential Code > 5 Floors > R502 Wood Floor Framing > R502.8 Cutting, Drilling and Notching
R502.8 Floors, Cutting, Drilling and Notching
inch = 25.4 mm. FIGURE R502.8 CUTTING, NOTCHING AND DRILLING ...
Los Angeles Residential Code > 5 Floors > R502 Wood Floor Framing > R502.8 Cutting, Drilling and Notching
R802.7 Roof-Ceiling Construction, Cutting, Drilling and Notching
Structural roof members shall not be cut, bored or notched in excess of the limitations specified in this section ...
Los Angeles Residential Code > 8 Roof-Ceiling Construction > R802 Wood Roof Framing > R802.7 Cutting, Drilling and Notching
R802.7 Roof-Ceiling Construction, Cutting, Drilling and Notching
Structural roof members shall not be cut, bored or notched in excess of the limitations specified in this section ...
Los Angeles Residential Code > 8 Roof-Ceiling Construction > R802 Wood Roof Framing > R802.7 Cutting, Drilling and Notching
R802.7.1 Roof-Ceiling Construction, Sawn Lumber
Cuts, notches and holes in solid lumber joists, rafters, blocking and beams shall comply with the provisions of Section R502.8.1 except ...
Los Angeles Residential Code > 8 Roof-Ceiling Construction > R802 Wood Roof Framing > R802.7 Cutting, Drilling and Notching > R802.7.1 Sawn Lumber
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