Palo Alto Municipal Code Ch. 16.05 California Mechanical Code, California Code of Regulations, Title 24,…

The California Mechanical Code, 2025 Edition, Title 24, Part 4 of the California Code of Regulations together with those omissions, amendments, exceptions and additions thereto, is adopted and hereby incorporated in this chapter by reference and made a part hereof the same as if fully set forth herein.

Unless superseded and expressly repealed, references in City of Palo Alto forms, documents and regulations to the chapters and sections of the former editions of the California Code of Regulations, Title 24 shall be construed to apply to the corresponding provisions contained within the California Code of Regulations, Title 24, 2025. Ordinance No. 5565 of the City of Palo Alto and all other ordinances or parts of ordinances in conflict herewith are hereby suspended and expressly repealed.

Wherever the phrases "California Mechanical Code" or "Mechanical Code" are used in this code or any ordinance of the City, such phrases shall be deemed and construed to refer and apply to the California Mechanical Code, 2025 Edition, Title 24, Part 4 of the California Code of Regulations, as adopted by this chapter.

One copy of the California Mechanical Code, 2025 Edition, has been filed for use and examination of the public in the Office of the Building Official of the City of Palo Alto.

(Ord. 5675 § 1 (part), 2025)

The provisions of this chapter contain cross-references to the provisions of the California Mechanical Code, 2025 Edition, in order to facilitate reference and comparison to those provisions.

(Ord. 5675 § 1 (part), 2025)

The provisions of this chapter shall constitute local amendments to the cross-referenced provisions of the California Mechanical Code, 2025 Edition, and shall be deemed to replace the cross-referenced sections of said Code with the respective provisions set forth in this chapter.

(Ord. 5675 § 1 (part), 2025)

Administration and enforcement of this code shall be governed by Chapter 1, Division II of the 2025 California Building Code as amended by Palo Alto Municipal Code Chapter 16.04.

(Ord. 5675 § 1 (part), 2025)

Chapter 1, Division II Administration of the 2025 California Mechanical Code is adopted by the City of Palo Alto to supplement, to the extent it does not conflict with, Chapter 1, Division II of the 2025 California Building Code, as amended.

(Ord. 5675 § 1 (part), 2025)

The following Appendix Chapters of the California Mechanical Code, 2025 Edition, are adopted and hereby incorporated in this chapter by reference and made a part hereof the same as if fully set forth herein:

A. Appendix B – Procedures to be followed to place gas equipment in operation.

B. Appendix C – Installation and testing of oil (liquid) fuel-fired equipment.

( Ord. 5675 § 1 (part), 2025)

Subdivision (6) of Section 104.2 of Chapter 1 of the California Mechanical Code is added to read:

(6) ADDITIONAL EXCEPTIONS: Reference Mechanical Section under PAMC 16.04.110 Section 105.2 Work exempt from permit.

(Ord. 5675 § 1 (part), 2025)

Section 510.7 of Chapter 5 of the California Mechanical Code is amended to read:

Section 510.7 Interior installations.

In all buildings, the ducts shall be enclosed in a continuous enclosure extending from the lowest fire-rated ceiling or floor above the hood, through any concealed spaces, to or through the roof so as to maintain the integrity of the fire separations required by the applicable building code provisions. The enclosure shall be sealed around the duct at the point of penetration of the lowest fire-rated ceiling or floor above the hood in order to maintain the fire resistance rating of the enclosure and shall be vented to the exterior of the building through weather-protected openings. [NFPA 96:7.7.1.2 – 7.7.1.4]

(Ord. 5675 § 1 (part), 2025)