Article II — Rules and Regulations.

Buildings and structures of an accessory character and miscellaneous structures not classified in any specific occupancy shall be constructed, equipped and maintained to conform to the requirements of this code commensurate with the fire and life hazard incidental to their occupancy. Group U shall include, but not be limited to the following:

Agricultural buildings

Aircraft hangars accessory to a one or two-family residence (See Section 412.5 of the California Building Code)

Barns

Carports

Fences more than 6 feet high

Grain silos accessory to a residential occupancy

Greenhouses

Livestock shelters

Private garages

Private riding arenas accessory to a one- or two-family residence

Retaining walls

Sheds

Storage building accessory to a one- or two-family residence

Stables

Tanks

Towers

(2)

CCR, Title 24, Part 2.5, CRC, Chapter 3, Section R309.6, Exception is deleted.

(3)

CCR, Title 24, Part 2.5, CRC, Chapter 3, Section R313.1 is amended to read as follows:

R313.1 Townhouse automatic fire sprinkler systems. An automatic residential fire sprinkler system shall be installed in townhouses and multi-family manufactured homes with two or more dwelling units in accordance with Title 25 of the California Code of Regulations.

Exceptions:

(a)

Detached accessory structures to Group R-3 not classified as a dwelling unit and not exceeding 3,000 square feet in gross floor area, unless otherwise approved by the fire code official.

(b)

Detached Group U Occupancies not greater than 3,000 square feet, unless otherwise approved by the fire code official.

(4)

CCR, Title 24, Part 2.5, CRC, Chapter 3, Section R313.1.2 is added to read as follows:

R313.1.2 Substantial improvement. An automatic fire sprinkler system shall be provided throughout all townhouses that undergo a substantial improvement when required pursuant to Sonoma County Code Section 7-13(B)(32) Table 903.6.

(5)

CCR, Title 24, Part 2.5, CRC, Chapter 3, Section R313.2 is amended to read as follows, with the exception deleted:

R313.2 One- and two-family dwellings automatic fire sprinkler systems. An automatic residential fire sprinkler system shall be installed in townhouses. Group R-3 occupancies permitted under this code shall be provided throughout regardless of square footage with an automatic sprinkler system inclusive of all mobile homes, manufactured homes and multi-family manufactured homes with two or more dwelling units in accordance with Title 25 of the California Code of Regulations.

Exception:

(a)

Accessory Dwelling Unit, provided that all of the following are met:

a.1.

The unit meets the definition of an Accessory Dwelling Unit as defined in the Government Code Section 65852.2.

a.2.

The existing primary residence does not have automatic fire sprinklers.

a.3.

The accessory detached dwelling unit does not exceed 1,200 square feet in size.

a.4.

The unit is on the same lot as the primary residence.

a.5.

The accessory dwelling unit is not attached to garages or has habitable space above carports.

a.6.

The accessory dwelling unit meets the requirements of California Fire Code, Sections 503.1.1 and 507.5.1, Or the Sonoma County Fire Safe Standards for access and setbacks.

(b)

Detached accessory structures to Group R-3 not classified as a dwelling unit and not exceeding 3,000 square feetin gross floor area, unless otherwise approved by the fire code official.

(c)

Detached Group U Occupancies not greater than 3,000 square feet, unless otherwise approved by the fire code official.

(6)

CCR, Title 24, Part 2.5, CRC, Chapter 3, Section R322.1.6 is amended to read as follows:

R322.1.6 Flood Damage Protection.

See Sonoma County Code Chapter 7B-11A for Flood Damage Protection.

(7)

CCR Title, 24, Part 2.5, CRC, Volume 1, Chapter 3, Section 337.1.3 is amended to read as follows:

337.1.3 Application. Buildings located in any Fire Severity Zone or any Wildland-Urban Interface Zone designated by the enforcing agency constructed, altered, moved, repaired or maintained after the application date shall comply with the provisions of this chapter.

Exceptions:

Buildings of an accessory character classified as a Group U occupancy and not exceeding 120 square feet in floor area, when located at least 30 feet from an applicable building.

Additions to and remodels of buildings originally constructed prior to the application date.

Group C, Special buildings conforming to the limitations specified in section 450.4.1 of the California building Code.

Agricultural exempt structures as defined in Chapter 7 of the Sonoma County Building Code when greater than 60 feet from property lines and other applicable structures. For the purposes of this section and section 337.10, applicable building include all buildings that have residential, commercial, educational, institutional, or similar occupancy type use.

(8)

CCR, Title 24, Part 2.5, CRC, Chapter 4, Section R403.1.6 is amended to read as follows:

R403.1.6 Foundation anchorage. Wood sill plates and wood walls supported directly on continuous foundations shall be anchored to the foundation in accordance with this section.

Cold-formed steel framing shall be anchored directly to the foundation or fastened to wood sill plates in accordance with Section R505.3.1 or R603.3.1, as applicable. Wood sill plates supporting cold-formed steel framing shall be anchored to the foundation in accordance with this section.

Wood sole plates at all exterior walls on monolithic slabs, wood sole plates of braced wall panels at building interiors on monolithic slabs and all wood sill plates shall be anchored to the foundation with minimum '/2-inch- diameter (12.7 mm) anchor bolts spaced not greater than 6 feet (1829 mm) on center or approved anchors or anchor straps spaced as required to provide equivalent anchorage to V2-inch-diameter (12.7 mm) anchor bolts. Bolts shall extend not less than 7 inches (178 mm) into concrete or grouted cells of concrete masonry units. The bolts shall be located in the middle third of the width of the plate. A nut and washer shall be tightened on each anchor bolt. There shall be not fewer than two bolts per plate section with one bolt located not more than 12 inches (305 mm) or less than seven bolt diameters from each end of the plate section. Interior bearing wall sole plates on monolithic slab foundation that are not part of a braced wall panel shall be positively anchored with approved fasteners. Sill plates and sole plates shall be protected against decay and termites where required by Sections R317 and R318.

Exceptions:

Walls 24 inches (610 mm) total length or shorter connecting offset braced wall panels shall be anchored to the foundation with not fewer than one anchor bolt located in the center third of the plate section and shall be attached to adjacent braced wall panels at corners as shown in Item 9 of Table R602.3(l).

Connection of walls 12 inches (305 mm) total length or shorter connecting offset braced wall panels to the foundation without anchor bolts shall be permitted. The wall shall be attached to adjacent braced wall panels at corners as shown in Item 9 of Table R602.3(l).

(9)

CCR, Title 24, Part 2, CRC, Appendix AZ, Section AZ101.2 is added to read as follows:

AZ101.2 Application. Notwithstanding any provisions of this Code to the contrary, the following requirements shall apply to emergency housing operated during a shelter crisis, as provided for in Government Code Section 8698 et seq. Other than the specific requirements set forth in this appendix, the facilities need not comply with the requirements of this Code for Group R occupancies unless otherwise specified in this Code.

(10)

CCR, Title 24, Part 2, CRC, Appendix AZ, Section AZ103.2.1, Exception 2 is added to read as follows:

AZ103.2.1 New additions, alterations, and change of occupancy. New additions, alterations, and change of occupancy to existing buildings shall comply with the requirements of the California Building Standards Code effective at the time of addition, alteration, or change of occupancy. The requirements shall apply only to and/or within the specific area of the addition, alteration, or change of occupancy.

Exceptions:

Existing buildings and structures used for emergency housing and emergency housing facilities may not be required to comply with the California Energy Code, as determined by the enforcing agency.

Change in occupancy shall not mandate conformance with new construction requirements set forth in the California Building Standards Code, provided such change in occupancy meets the minimum requirements set forth in this appendix.

(11)

CCR, Title 24, Part 2, CRC, Appendix AZ, Section AZ103.3, is amended to read as follows:

AZ103.3 Occupant load. Except as otherwise stated in this appendix, the maximum occupant load allowed in buildings and structures used as emergency housing shall be determined by the enforcing agency, but the interior floor area shall not be less than 53 square feet (4.9 m 2 ) for one occupant. Where more than one person occupies the building/structure, the required floor area shall be increased at the rate of 40 square feet (3.7 m 2 ) for each occupant in excess of one.

Exceptions:

Tents.

Recreational vehicles and park trailers designed for human habitation that meet the requirements in the Health and Safety Code, Sections 18009.3 and 18010, as applicable.

(12)

CCR, Title 24, Part 2, CRC, Appendix AZ, Section AZ104.1, is amended to read as follows:

AZ104.1 General. Emergency sleeping cabins shall have an interior floor area of not less than 53 square feet (4.9 m 2 ) for one occupant. Where more than one person occupies the cabin, the required floor area shall be increased at the rate of 40 square feet (3.7 m 2 ) for each occupant in excess of one. The interior floor area shall not exceed 400 square feet (37 m 2 ), excluding lofts.

(13)

CCR, Title 24, Part 2, CRC, Appendix AZ, Section AZ106.1, is amended to read as follows:

AZ106.1 General. Tents shall not be used to house occupants for more than 7 days unless such tents are maintained with tight wooden floors raised at least 4 inches (101.6 mm) above the ground level and are equipped with baseboards on all sides to a height of at least 6 inches (152.4 mm). Tents may be maintained with concrete slabs with the finished surface at least 4 inches (101.6 mm) above grade and equipped with curbs on all sides at least 6 inches (152.4 mm) high.

Membrane structures installed and/or assembled in accordance with Chapter 31 of this code, may be permitted to be used as emergency housing and emergency housing facilities, as determined by the enforcing agency.

(14)

CCR, Title 24, Part 2, CRC, Appendix AZ, Section AZ110.3, is amended to read as follows:

AZ110.3 Toilet and bathing facilities. When dependent units are used as emergency housing, the emergency housing site shall be provided with one toilet and one bathing facility for every 15 occupants of each gender. The enforcing agency may permit different types and ratios of toilet and bathing facilities. The approval shall be based upon a finding that the type and ratio of toilet and bathing facilities are sufficient to process the anticipated volume of sewage and wastewater, while maintaining sanitary conditions for the occupants of the emergency housing.

Bathing facilities shall be provided with heating equipment which shall be capable of maintaining a temperature of 70 degrees F (21.0 degrees Celsius) within such facilities.

Lavatories with running water shall be installed and maintained in the toilet facilities or adjacent to the toilet facilities. This can include foot-pumped water at hand washing stations that are properly maintained.

(15)

CCR, Title 24, Part 2, CRC, Appendix AZ, Section AZ111, is added to read as follows:

SECTION AZ111

ALTERNATIVES AND MODIFICATIONS

AZ111.1 Alternatives and modifications. Alternative compliance and/or modifications that are reasonably equivalent to the requirements in this appendix may be granted by the Authority Having Jurisdiction in individual cases when dealing with buildings or structures used for emergency housing.

(E)

California Plumbing Code amendments.

(1)

CCR Title 24, Part 5, CPC, Chapter 7, Section 713.8 is amended to read as follows:

713.8 Toilets Required. Every dwelling or other building or place where persons congregate, reside or are employed shall be provided with an adequate number of waterless toilets or water flush toilets connected to a sewage disposal system which shall consist of a public sewer connection or a septic tank and a system of underground drains for the disposal of the tank effluent, or other systems approved by the chief building official. Such system shall be constructed to meet the requirements of construction and maintenance provided in this chapter and the codes adopted hereby.

(F)

California Existing Building Code amendments.

(1)

CCR Title 24, Part 10, CEBC, Chapter 4, Section 405.2.7 is added to read as follows:

405.2.7 Seismic Design and Evaluation Procedures. Seismic design and evaluation procedures shall conform to the provisions of this chapter and Chapter 1, Section 101.5.4 of the 2015 International Existing Building Code.

(2)

CCR Title 24, Part 10, CEBC, Title 24, Chapter 4, Section 405.2.8 is added to read:

405.2.8 Wind Design. Wind design of existing buildings shall be based on the procedures specified in the CBC.

(3)

CCR Title 24, Part 10, CEBC, Title 24, Chapter 4, Section 405.2.9 is added to read:

405.2.9 Unsafe Conditions. Regardless of the extent of the structural damage, unsafe conditions shall be eliminated.

(G)

California Green Building Standards Code

(1)

CCR Title 24, Part 11, California Green Building Standards Code, Chapter 4, Section 2 is amended to add the following definition:

All-Electric Dwelling. A primary or accessory dwelling that uses electricity as the source of energy for its space heating, water heating, pool and spa systems, cooking appliances, clothes drying appliance and decorative appliances, and has no natural gas or propane plumbing installed within the building or within the building's property lines. All-Electric Buildings may include solar thermal pool heating.

(2)

CCR Title 24, Part 11, California Green Building Standards Code, Chapter 4, Section 4.509 is added to read as follows:

SECTION 4.509

ALL ELECTRIC DWELLINGS