Chapter 3 — PROVISIONS FOR ALL COMPLIANCE METHODS
Section 315 — [SFM]—EXISTING GROUP I OCCUPANCIES
2025 California Existing Building Code (Title 24, Part 10) · 2025 edition · ingested 2026-07-07 · California
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315.1 General. ¶
315.1 General. Existing buildings housing existing protective social-care homes or facilities established prior to March 4, 1972 may have their use continued if they conform, or are made to conform, to the following provisions:
315.2 Use of floors. ¶
315.2 Use of floors. The use of floor levels in buildings of Type III, IV or V nonfire-rated construction may be as follows: Nonambulatory— first floor only; Ambulatory—not higher than the third-floor level, provided walls and partitions are constructed of materials equal in fireresistive quality to that of wood lath and plaster in good repair and all walls are firestopped at each floor level. on Jul 18, 2025 11:14 AM (CDT) THEREUNDER. PROVISIONS FOR ALL COMPLIANCE METHODS
315.3 Enclosure of exits and vertical openings. ¶
315.3 Enclosure of exits and vertical openings. Except for two-story structures housing ambulatory guests, all interior stairs shall be enclosed in accordance with Chapter 10 of the California Building Code. In lieu of stairway enclosures, floor separations or smoke barriers may be provided in such a manner that fire and smoke will not spread rapidly to floors above or otherwise impair exit facilities. In these instances, floor separations or smoke barriers shall have a fire resistance equal to not less than [ 1] / 2 -inch (13 mm) gypsum wall board on each side of wood studs with openings…
315.4 Exit access. ¶
315.4 Exit access. Each floor or portion thereof of buildings used for the housing of existing protective social-care homes or facilities shall have access to not less than two exits in such a manner as to furnish egress from the building or structure in the event of an emergency substantially equivalent to the provisions of Chapter 10 of the California Building Code.
315.5 Corridor openings. ¶
315.5 Corridor openings. Openings from rooms to interior corridors shall be protected by not less than 1 [3] / 4 -inch (44.5 mm) solid- bonded wood-core doors. Transoms and other similar openings shall be sealed with materials equivalent to existing corridor wall construction.
315.6 Interior finishes. ¶
315.6 Interior finishes. Interior wall and ceiling finishes shall conform to the requirements for a Group R-1 Occupancy as specified in Chapter 8 of the California Building Code.
315.7 Automatic fire sprinklers. ¶
315.7 Automatic fire sprinklers. Automatic sprinkler systems shall be installed in existing protective social-care occupancies in accordance with the provisions of Section 903.2.6 of the California Building Code.
315.8 Fire alarm systems. ¶
315.8 Fire alarm systems. Automatic fire alarm systems shall be installed in existing protective social-care homes or facilities in accordance with the provisions of Section 907.2.6 of the California Building Code. Exception: When an approved automatic sprinkler system conforming to Section 903.2.6 of the California Building Code is installed, a separate fire alarm system as specified in this section need not be provided.