California building codes for butte county downloadable pdf

December 11, Building Stakeholder's Meeting. Select the link to view the approved Ordinance including local amendments. The Online Center allows Licensed Contractors and home owners to apply for and receive building permits over the internet. It allows applicants to follow the status of their permit application and request inspections.

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You can edit, iterate, and research collaboratively. Upgrade your account to invite teammates. California Residential Code Part I Administrative. Part II Definitions. Part IV — Energy Conservation. Part V — Mechanical. Part VI — Fuel Gas. Part VII — Plumbing. Part IX — Referenced Standards. Heads up : There are no amended sections in this chapter. Chapter 6 Wall Construction. See Chapter 1 for state agency authority and building applications. P Add Comment.

Section R General. The provisions of this chapter shall control the design and construction of walls and partitions for buildings. Wall construction shall be capable of accommodating all loads imposed in accordance with Section R and of transmitting the resulting loads to the supporting structural elements. Section R Wood Wall Framing. Wood and wood-based products used for load-supporting purposes shall conform to the applicable provisions of this section.

Approved end-jointed lumber identified by a grade mark conforming to Section R Endjointed lumber used in an assembly required elsewhere in this code to have a fire-resistance rating shall have the designation "Heat Resistant Adhesive" or "HRA" included in its grade mark. Structural log members shall comply with the provisions of ICC Structural capacities for structural composite lumber shall be established and monitored in accordance with ASTM D Panels shall be identified for grade , bond classification, and performance category by a grade mark or certificate of inspection issued by an approved agency.

Particleboard shall be identified by the grade mark or certificate of inspection issued by an approved agency. Fiberboard sheathing, where used structurally, shall be identified by an approved agency as conforming to ASTM C Exterior walls of wood-frame construction shall be designed and constructed in accordance with the provisions of this chapter and Figures R Components of exterior walls shall be fastened in accordance with Tables R Wall sheathing shall be fastened directly to framing members and, where placed on the exterior side of an exterior wall , shall be capable of resisting the wind pressures listed in Table R Wall sheathing used only for exterior wall covering purposes shall comply with Section R Studs shall be continuous from support at the sole plate to a support at the top plate to resist loads perpendicular to the wall.

The support shall be a foundation or floor, ceiling or roof diaphragm or shall be designed in accordance with accepted engineering practice. Exception: Jack studs, trimmer studs and cripple studs at openings in walls that comply with Tables R The size, height and spacing of studs shall be in accordance with Table R Exceptions: Utility grade studs shall not be spaced more than 16 inches mm on center, shall not support more than a roof and ceiling, and shall not exceed 8 feet mm in height for exterior walls and load-bearing walls or 10 feet mm for interior nonload-bearing walls.

Where snow loads are less than or equal to 25 pounds per square foot 1. Studs shall be minimum No. Exception: A single top plate used as an alternative to a double top plate shall comply with the following: The single top plate shall be tied at corners, intersecting walls , and at in-line splices in straight wall lines in accordance with Table R The rafters or joists shall be centered over the studs with a tolerance of not more than 1 inch 25 mm.

Omission of the top plate is permitted over headers where the headers are adequately tied to adjacent wall sections in accordance with Table R Exceptions: The top plates are two 2-inch by 6-inch 38 mm by mm or two 3-inch by 4-inch 64 mm by 89 mm members. A third top plate is installed. Solid blocking equal in size to the studs is installed to reinforce the double top plate.

Studs shall have full bearing on a nominal 2-by 51 mm or larger plate or sill having a width not less than to the width of the studs. Braced wall panels located at exterior walls that support roof rafters or trusses including stories below top story shall have the framing members connected in accordance with one of the following: Fastening in accordance with Table R The net uplift value shall be determined in accordance with Section R The net uplift value shall be as determined in Item 1.

Wall sheathing and fasteners designed to resist combined uplift and shear forces in accordance with accepted engineering practice. Interior load-bearing walls shall be constructed, framed and fireblocked as specified for exterior walls.

Interior nonbearing walls shall be permitted to be constructed with 2-inch by 3-inch 51 mm by 76 mm studs spaced 24 inches mm on center or, where not part of a braced wall line , 2-inch by 4- inch 51 mm by mm flat studs spaced at 16 inches mm on center. Interior nonbearing walls shall be capped with not less than a single top plate.

Interior nonbearing walls shall be fireblocked in accordance with Section R Drilling and notching of studs shall be in accordance with the following: Notching. Any stud in an exterior wall or bearing partition shall be permitted to be cut or notched to a depth not exceeding 25 percent of its width. Studs in nonbearing partitions shall be permitted to be notched to a depth not to exceed 40 percent of a single stud width.

For header spans, see Tables R Spans are given in feet and inches. Other tabulated values assume 2 grade lumber. Building width is measured perpendicular to the ridge. For widths between those shown, spans are permitted to be interpolated. Where the number of required jack studs equals one, the header is permitted to be supported by an approved framing anchor attached to the full-height wall stud and to the header.

Use 30 psf ground snow load for cases in which ground snow load is less than 30 psf and the roof live load is equal to or less than 20 psf. Tabulated values assume 2 grade lumber, wet service and incising for refractory species. Porch depth is measured horizontally from building face to centerline of the header. For depths between those shown, spans are permitted to be interpolated.

For SI: Spans are based on single story with clear-span trussed roof or two story with floor and roof supported by interior-bearing walls. Jack studs shall be used for spans over 4 feet. Cripple spacing shall be the same as for studs. Galvanized nails shall be hot-dipped or tumbled. Load-bearing headers are not required in interior or exterior nonbearing walls.

A single flat 2-inch by 4-inch 51 mm by mm member shall be permitted to be used as a header in interior or exterior nonbearing walls for openings up to 8 feet mm in width if the vertical distance to the parallel nailing surface above is not more than 24 inches mm.

For such nonbearing headers, cripples or blocking are not required above the header. Fireblocking shall be provided in accordance with Section R Buildings shall be braced in accordance with this section or, when applicable, Section R Where a building, or portion thereof, does not comply with one or more of the bracing requirements in this section, those portions shall be designed and constructed in accordance with Section R For the purpose of determining the amount and location of bracing required in each story level of a building, braced wall lines shall be designated as straight lines in the building plan placed in accordance with this section.

Exterior walls parallel to a braced wall line shall be offset not more than 4 feet mm from the designated braced wall line location as shown in Figure R Interior walls used as bracing shall be offset not more than 4 feet mm from a braced wall line through the interior of the building as shown in Figure R SDC D 0 , D 1 , D 2 Detached, townhouses , one- and two- story only 25 feet Up to 35 feet to allow for a single room not to exceed square feet.

Spacing of all other braced wall lines shall not exceed 25 feet. Braced wall panels shall be full-height sections of wall that shall not have vertical or horizontal offsets. Braced wall panels shall be constructed and placed along a braced wall line in accordance with this section and the bracing methods specified in Section R The bracing lengths in Table R The end of each braced wall panel closest to the end of the braced wall line shall have an 1, lb 8 kN hold-down device fastened to the stud at the edge of the braced wall panel closest to the corner and to the foundation or framing below as shown in End Condition 5 of Figure R Braced wall lines with a length of 16 feet mm or less shall have not less than two braced wall panels of any length or one braced wall panel equal to 48 inches mm or more.

Braced wall lines greater than 16 feet mm shall have not less than two braced wall panels. The required length of bracing along each braced wall line shall be determined as follows: All buildings in Seismic Design Categories A and B shall use Table R Only braced wall panels parallel to the braced wall line shall contribute toward the required length of bracing of that braced wall line. Braced wall panels along an angled wall meeting the minimum length requirements of Tables R Any braced wall panel on an angled wall at the end of a braced wall line shall contribute its projected length for only one of the braced wall lines at the projected corner.

Exception: The length of wall bracing for dwellings in Seismic Design Categories D 0 , D 1 and D 2 with stone or masonry veneer installed in accordance with Section R Applies to panels next to garage door opening where supporting gable end wall or roof load only. Shall only be used on one wall of the garage.

A full-height clear opening shall not be permitted adjacent to a Method CS-G panel. Method applies to detached one- and two-family dwellings in Seismic Design Categories D 0 through D 2 only. Mixing of bracing methods shall be permitted as follows: Mixing intermittent bracing and continuous sheathing methods from story to story shall be permitted. Mixing intermittent bracing methods from braced wall line to braced wall line within a story shall be permitted.

Mixing intermittent bracing methods along a braced wall line shall be permitted in Seismic Design Categories A and B, and detached dwellings in Seismic Design Category C, provided the length of required bracing in accordance with Table R The length of required bracing shall be the highest value of all intermittent bracing methods used in accordance with Table R The requirements of Section R Continuous sheathing methods require structural panel sheathing to be used on all sheathable surfaces on one side of a braced wall line including areas above and below openings and gable end walls and shall meet the requirements of Section R An approved interior finish material with an in-plane shear resistance equivalent to gypsum board shall be permitted to be substituted, unless otherwise required by Section R Except for Method LIB, gypsum wall board is permitted to be omitted provided the required length of bracing in Tables R The minimum length of a braced wall panel shall comply with Table R Where a panel has an opening on either side of differing heights, the taller opening height shall be used to determine the panel length.

Linear interpolation shall be permitted. Use the actual length where it is greater than or equal to the minimum length. For purposes of computing the required length of bracing in Tables R The hold-down force shall be in accordance with Table R Continuously sheathed portal frame braced wall panels shall be constructed in accordance with Figure R The number of continuously sheathed portal frame panels in a single braced wall line shall not exceed four.

Straps shall be installed in accordance with manufacturer's recommendations. 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. 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.

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 R Creek corridor habitats support plants and animals, recharge aquifers, and filter some pollutants.

Creek corridors are valuable as open space areas and are of recreational and scenic interest. For these reasons, it is the intent of the City to provide adequate buffer areas between creek corridors and adjacent development to protect this valuable community resource as a natural, scenic, and recreational amenity.

The provisions of this section apply to any property adjoining or including any of the following waterways:. Streambed Information Required. At the time of permit application, applicants with parcels adjoining any of the above specified waterways shall submit site-specific streambed information prepared by a hydrologist, civil engineer, or qualified professional to determine the precise top of bank of the waterway, as defined in Subsection D below.

The analysis shall include:. Identification of the direction and flow of material run-off from the site, or immediately adjacent to the site;. The need for mitigation measures, including rip rap, energy dissipation structures, or flow stabilizing devices, to keep flow velocities close to pre-development levels; and. Other information that the Director determines is necessary to properly analyze and mitigate potential impacts of the proposed development on the waterway.

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