Chapter 8 — CALIFORNIA MECHANICAL CODE AMENDMENTS

The California Mechanical Code as adopted by 14.01.140 is adopted incorporating the following amendments.

(Ord. 2374. (01/14/2014); Ord. 2424. (12/13/2016); Ord. 2473. (01/14/2020); Ord. 2515. (12/06/2022); Ord. 2515. (12/13/2022); Ord. 2531. (10/24/2023))

Adopt the following Appendix Chapters from the 2022 California Mechanical Code: Appendix B and Appendix C.

(Ord. 2374. (01/14/2014); Ord. 2424. (12/13/2016); Ord. 2473. (01/14/2020); Ord. 2515. (12/06/2022); Ord. 2515. (12/13/2022); Ord. 2531. (10/24/2023))

Appeals resulting from decisions or determinations made by the Building Official relative to the application and interpretation of this Code shall be heard by the Building and Accessibility Standards Board of Appeals as set forth in Section 14.02.020 of the Nevada County.

(Ord. 2374. (01/14/2014); Ord. 2424. (12/13/2016); Ord. 2473. (01/14/2020); Ord. 2515. (12/06/2022); Ord. 2515. (12/13/2022); Ord. 2531. (10/24/2023))

Fees shall be as set forth in the fee schedule adopted by Resolution of the Nevada County Board of Supervisors.

(Ord. 2374. (01/14/2014); Ord. 2424. (12/13/2016); Ord. 2473. (01/14/2020); Ord. 2515. (12/06/2022); Ord. 2515. (12/13/2022); Ord. 2531. (10/24/2023))

Plan review fees shall be as set forth in the fee schedule adopted by Resolution of the Nevada County Board of Supervisors.

(Ord. 2374. (01/14/2014); Ord. 2424. (12/13/2016); Ord. 2473. (01/14/2020); Ord. 2515. (12/06/2022); Ord. 2515. (12/13/2022); Ord. 2531. (10/24/2023))

read)

Refer to Section 14.02.070, Section 105.3.2.

(Ord. 2374. (01/14/2014); Ord. 2424. (12/13/2016); Ord. 2473. (01/14/2020); Ord. 2515. (12/06/2022); Ord. 2515. (12/13/2022); Ord. 2531. (10/24/2023))

Refer to Section 14.02.080, Section 105.5.

(Ord. 2374. (01/14/2014); Ord. 2424. (12/13/2016); Ord. 2473. (01/14/2020); Ord. 2515. (12/06/2022); Ord. 2515. (12/13/2022); Ord. 2531. (10/24/2023))

(change to read)

Refer to Section 14.02.100, Section 109.4.

(Ord. 2374. (01/14/2014); Ord. 2424. (12/13/2016); Ord. 2473. (01/14/2020); Ord. 2515. (12/06/2022); Ord. 2515. (12/13/2022); Ord. 2531. (10/24/2023))

303.7.2 Liquefied Petroleum Gas Appliances.

A three (3") inch gravity drain shall be provided at the low point of the space, installed so as to provide a one-quarter inch (0.25") per foot grade and terminate at an exterior point of the building protected from blockage. The opening shall be screened with a corrosion-resistant wire mesh with mesh openings of one- quarter inch (0.25") in dimension. Lengths of the gravity drains over ten (10') feet in length shall be first approved by the Building Official.

(Ord. 2374. (01/14/2014); Ord. 2424. (12/13/2016); Ord. 2473. (01/14/2020); Ord. 2515. (12/06/2022); Ord. 2515. (12/13/2022); Ord. 2531. (10/24/2023))

Vent terminals of direct-vent appliances shall terminate above the anticipated snow depth.

Direct vent appliance terminations shall not be located under decks which could be sealed off around the perimeter with snow accumulation.

Above 4,000 feet elevation above sea level all direct vent terminations shall be protected from closure and sliding snow and ice by the use of formed metal crickets. The metal crickets shall have a minimum vertical height (at the apex) at least one-half of the required vertical height of the vent extension above the roof. In no case shall the cricket measure less than eight (8") inches at the apex. The cricket and flashing shall be secured to the roof framing and sheathing to withstand the shear loads anticipated. Combined flashing and cricket units may be used. Vent pipes shall extend through their flashings and be tightly sealed at the point of penetration so as to prevent the return of sewer gases into the structure. All appliance vents, flues and chimneys shall be strapped to the cricket near its apex with a galvanized steel strap with a minimum thickness of sixteen (16) gauge.

EXCEPTION: Vent terminations which are made within thirty-six (36") inches of the ridge or on roofs having a pitch of two (2) in twelve (12) or flatter shall not be required to have crickets.

(Ord. 2374. (01/14/2014); Ord. 2424. (12/13/2016); Ord. 2473. (01/14/2020); Ord. 2515. (12/06/2022); Ord. 2515. (12/13/2022); Ord. 2531. (10/24/2023))

Exit terminals and combustion air intakes shall not be located under decks which could be sealed off around the perimeter with snow accumulation.

Above 4,000 feet elevation above sea level all vent exit terminals shall be protected from closure and sliding snow and ice by the use of formed metal crickets. The metal crickets shall have a minimum vertical height (at the apex) at least one-half of the required vertical height of the vent extension above the roof. In no case shall the cricket measure less than eight (8") inches at the apex. The cricket and flashing shall be secured to the roof framing and sheathing to withstand the shear loads anticipated. Combined flashing and cricket units may be used. Vent pipes shall extend through their flashings and be tightly sealed at the point of penetration so as to prevent the return of sewer gases into the structure. All appliance vents, flues and chimneys shall be strapped to the cricket near its apex with a galvanized steel strap with a minimum thickness of sixteen (16) gauge. EXCEPTION: Exit terminals which are made within thirty-six (36") inches of the ridge or on roofs having a pitch of two (2) in twelve (12) or flatter shall not be required to have crickets.

(Ord. 2374. (01/14/2014); Ord. 2424. (12/13/2016); Ord. 2473. (01/14/2020); Ord. 2515. (12/06/2022); Ord. 2515. (12/13/2022); Ord. 2531. (10/24/2023))

Gas Vents shall terminate above the anticipated snow depth.

Gas vent terminations shall not be located under decks which could be sealed off around the perimeter with snow accumulation.

Above 4,000 feet elevation above sea level all gas vent terminations shall be protected from closure and sliding snow and ice by the use of formed metal crickets. The metal crickets shall have a minimum vertical height (at the apex) at least one-half of the required vertical height of the vent extension above the roof. In no case shall the cricket measure less than eight (8") inches at the apex. The cricket and flashing shall be secured to the roof framing and sheathing to withstand the shear loads anticipated. Combined flashing and cricket units may be used. Vent pipes shall extend through their flashings and be tightly sealed at the point of penetration so as to prevent the return of sewer gases into the structure. All appliance vents, flues and chimneys shall be strapped to the cricket near its apex with a galvanized steel strap with a minimum thickness of sixteen (16) gauge.

EXCEPTION: Gas vent terminations which are made within thirty-six (36") inches of the ridge or on roofs having a pitch of two (2) in twelve (12) or flatter shall not be required to have crickets.

(Ord. 2374. (01/14/2014); Ord. 2424. (12/13/2016); Ord. 2473. (01/14/2020); Ord. 2515. (12/06/2022); Ord. 2515. (12/13/2022); Ord. 2531. (10/24/2023))