8130.10. - AMENDMENT.

Section 903.3.1.3 of the 2025 California Building Code is amended to read as follows due to local climatic, geographical, and topographical conditions:

903.3.1.3. NFPA 13D SPRINKLER SYSTEMS. Where allowed, automatic sprinkler systems installed in oneand two-family dwellings shall be installed throughout in accordance with NFPA 13D with the following additions:

A)

Attics containing forced air units shall have one or more quick-response intermediate temperature sprinkler heads adjacent to each unit.

B)

Attached private garages shall be sprinklered and shall have a design density of an Ordinary Hazard Group 1 occupancy with a design area of two (2) heads. Quick-response intermediate temperature commercial type heads shall be used for the garage area.

C)

Detached private garages over 1000 square feet in total area shall be sprinklered and shall have a design density of an Ordinary Hazard Group 1 occupancy with a design area of two (2) heads. Quick-response intermediate temperature commercial type heads shall be used for the garage area.

D)

Residential structures under 5000 square feet in total area shall be designed for two (2) heads flowing in the residential area. Residential structures over 5000 square feet in total area shall be designed for four (4) heads flowing in the residential area.

E)

Attics and basements used for storage purposes shall be fully sprinklered with residential type heads.

F)

A single exterior bell activated by the waterflow switch shall be provided at an approved location.

G)

A representative sample of spare heads shall be provided at an approved location.

(Ord. No. 2366, § 3, 12-17-19; Ord. No. 2394, § 3, 11-15-22; Ord. No. 2408, § 3, 11-18-25)

8130.10.5. - ADDITION.

Section 903.6 of the 2025 California Building Code is added to read as follows due to local climatic, geographical, and topographic conditions:

903.6. EXISTING BUILDINGS. An approved automatic fire sprinkler system shall be installed in existing buildings, including any additions thereto, in the occupancies and buildings as set forth in this section.

1.

In all commercial and industrial buildings greater than 5000 square feet in area when enlarged by an addition to the existing structure or as required by the Fire Chief.

2.

In all commercial and industrial buildings equal to or less than 5000 square feet in area, when enlarged by an addition to the existing structure, exceeds 5000 square feet or as required by the Fire Chief.

3.

In all Group R-1 or R-2 Occupancies when an addition results in additional guestrooms or dwelling units.

4.

In all Group R-3 Occupancies greater than 2500 square feet in living area when enlarged by an addition to the living area of the existing structure.

EXCEPTIONS:

1)

Additions of areas that would not require sprinklers such as closets or bathrooms.

2)

Additions that occur without increasing the number of stories or increasing the horizontal projection of the first story roof.

5.

In all Group R-3 Occupancies equal to or less than 2500 square feet in living area, when enlarged by an addition to the living area of the existing structure, exceeds 2500 square feet in residential area.

EXCEPTIONS:

1)

Additions of areas that would not require sprinklers such as closets or bathrooms.

2)

Additions that occur without increasing the number of stories or increasing the horizontal projection of the first story roof.

6.

In existing buildings for new occupancies as required by other sections of the Fire Code.

(Ord. No. 2366, § 3, 12-17-19; Ord. No. 2394, § 3, 11-15-22; Ord. No. 2408, § 3, 11-18-25)

8130.11. - AMENDMENT.

Section 903.4.3 of the 2025 California Building Code is amended to read as follows due to local topographical conditions:

903.4.3. ALARMS. An approved audible and visual sprinkler waterflow alarm device shall be connected to every automatic sprinkler system. Such sprinkler water-flow alarm devices shall be activated by water flow equivalent to the flow of a single sprinkler of the smallest orifice size installed in the system. Alarm devices shall be provided on the exterior of the building in an approved location. Where a waterflow switch is required by Section 903.4.1 to be electrically supervised, such a sprinkler waterflow alarm devices shall be powered by a fire alarm control unit or, where provided, a fire alarm system. Where a fire alarm system is installed, actuation of the automatic fire sprinkler system shall actuate the building fire alarm system. Approved audible notification appliances shall be provided in the interior of the building at locations required by the Fire Chief.

EXCEPTION: NFPA 13D systems serving R-3 occupancies shall be provided with a single exterior bell.

(Ord. No. 2366, § 3, 12-17-19; Ord. No. 2394, § 3, 11-15-22; Ord. No. 2408, § 3, 11-18-25)

8130.12. - AMENDMENT.

Volume 1, Chapter 12, Section 1206.2 of the 2025 California Building Code is amended to read as follows due to local geographical conditions:

1206.2. Air-borne Sound. Walls, partitions and floor-ceiling assemblies separating dwelling units and sleeping units from each other or from public or service area within the structure shall have an impact insulation class rating of not less than 58 where tested in accordance with ASTM E492, or have a Normalized Impact Sound Rating ("NISR") of not less than 53 if field tested in accordance with ASTM

E1007. Alternatively, the impact insulation class of floor-ceiling assemblies shall be established by engineering analysis based on a comparison of floor-ceiling assemblies having impact insulation class ratings as determined by the test procedures in ASTM E492. Engineering analysis shall be performed by a registered design professional. Penetrations or openings in construction assemblies for piping; electrical devices; recessed cabinets; bathtubs; soffits; or heating, ventilating or exhaust ducts shall be sealed, lined, insulated or otherwise treated to maintain the required ratings. This requirement shall not apply to entrance doors; however, such doors shall be tight fitting to the frame and sill.

gistered design professional. Penetrations or openings in construction assemblies for piping; electrical devices; recessed cabinets; bathtubs; soffits; or heating, ventilating or exhaust ducts shall be sealed, lined, insulated or otherwise treated to maintain the required ratings. This requirement shall not apply to entrance doors; however, such doors shall be tight fitting to the frame and sill.

EXCEPTION: Group R-1 hotel and motel occupancies shall be permitted to meet a minimum sound transmission class ("STC") of 52, a noise isolation class ("NIC") of 47, or a normalized noise isolation class ("NNIC") of 47, as applicable.

(Ord. No. 2366, § 3, 12-17-19; Ord. No. 2394, § 3, 11-15-22; Ord. No. 2408, § 3, 11-18-25)

8130.13 - AMENDMENT.

Volume 1, Chapter 12, Section 1206.3 of the 2025 California Building Code is amended to read as follows due to local geographical conditions:

1206.3. Structure-borne sound. Floor-ceiling assemblies between dwelling units and sleeping units or between a dwelling unit or sleeping unit and a public or service area within the structure shall have an impact insulation class rating of not less than 58 where tested in accordance with ASTM E492, or have a Normalized Impact Sound Rating (NISR) of not less than 53 if field tested in accordance with ASTM E1007. Alternatively, the impact insulation class of floor-ceiling assemblies shall be established by engineering analysis based on a comparison of floor-ceiling assemblies having impact insulation class ratings as determined by the test procedures in ASTM E492. Engineering analysis shall be performed by a registered design professional.

EXCEPTION:

(A).

Impact sound insulation is not required for floor-ceiling assemblies over non-habitable rooms or spaces not designed to be occupied such as garages, mechanical rooms or storage areas.

(B).

Group R-1 hotel and motel occupancies shall be permitted to meet a minimum impact insulation class ("IIC") rating of 52 or a field impact insulation class ("FIIC") rating of 47, as applicable. Floor coverings may be included in the assembly to obtain the required ratings. These coverings must be retained as a permanent part of the assembly and may only be replaced by other floor coverings that provide the required impact sound insulation.

(Ord. No. 2366, § 3, 12-17-19; Ord. No. 2394, § 3, 11-15-22; Ord. No. 2408, § 3, 11-18-25)

8130.14 - ADDITION.

Volume 1, Chapter 15, Section 1505.0 of the 2025 California Building Code is added to read as follows due to climatic and topographical conditions:

1505.0. Fire Classification. The roof covering on any structure regulated by this code shall have a minimum Class A rating in the Wildland Interface Fire Area Boundaries and a class A or B rating in all other areas outside the Wildland Interface Fire Area Boundaries of the City. Pressure treated or untreated wood shakes and wood shingles shall not be installed on any building or structure located in the Wildland Interface Fire Area Boundaries.

(Ord. No. 2366, § 3, 12-17-19; Ord. No. 2394, § 3, 11-15-22; Ord. No. 2408, § 3, 11-18-25)