§ 16.04.255. Section 1203.6 Ventilation of weather-exposed enclosed assemblies.

Section 1203.6 of Chapter 12 of the California Building Code is added to read:

1203.6 Ventilation of weather-exposed enclosed assemblies. Exterior projecting elements and appurtenances exposed to the weather and sealed underneath, including but not limited to balconies, landings, decks, and stairs, shall have cross ventilation for each separate enclosed space by ventilation openings protected against the entrance of rain and snow. Blocking and bridging shall be arranged so as not to interfere with the movement of air. The net free ventilating area shall not be less than 1/150th of the area of the space ventilated. Ventilation openings shall comply with Section 1203.2.1. An access panel of sufficient size shall be provided on the underside of the enclosed space to allow for periodic inspection.

Exceptions:

1. An access panel is not required where the exterior coverings applied to the underside of joists are easily removable using only common tools.

2. Removable soffit vents of at least four inches (4") in width can be used to satisfy both ventilation and access panel requirements.

(Ord. 5477 § 1 (part), 2019)