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Chapter 8-4 — FIRE PROTECTION

Section 8-407 — VERTICAL SHAFTS

2025 California Historical Building Code (Title 24, Part 8) · 2025 edition · updated 2026-07-29 · California

Vertical shafts need not be enclosed when such shafts are blocked at every floor level by the installation of not less than 2 full inches (51 mm) of solid wood or equivalent construction to prevent the initial passage of smoke and flame. Automatic sprinkler systems or other solutions may be considered on a case-by-case basis, in lieu of enclosure of vertical shafts and stairwells.

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▸ Contents — 2025 California Historical Building Code (Title 24, Part 8)
2025 California Historical Building Code (Title 24, Part 8)
  1. Chapter 8-1 — ADMINISTRATION
  2. Chapter 8-2 — DEFINITIONS
  3. Chapter 8-3 — USE AND OCCUPANCY
  4. ▸ Chapter 8-4 — FIRE PROTECTION
    Overview
    1. Section 8-401 — PURPOSE, INTENT AND SCOPE
    2. Section 8-402 — FIRE-RESISTIVE CONSTRUCTION
    3. Section 8-403 — INTERIOR FINISH MATERIALS
    4. Section 8-404 — WOOD LATH AND PLASTER
    5. Section 8-405 — OCCUPANCY SEPARATION
    6. Section 8-406 — MAXIMUM FLOOR AREA
    7. Section 8-407 — VERTICAL SHAFTS
    8. Section 8-408 — ROOF COVERING
    9. Section 8-409 — FIRE ALARM SYSTEMS
    10. Section 8-410 — AUTOMATIC SPRINKLER SYSTEMS
    11. Section 8-411 — OTHER TECHNOLOGIES
    12. Section 8-412 — HIGH-RISE BUILDINGS
  5. Chapter 8-5 — MEANS OF EGRESS
  6. Chapter 8-6 — ACCESSIBILITY
  7. Chapter 8-7 — STRUCTURAL REGULATIONS
  8. Chapter 8-8 — ARCHAIC MATERIALS AND METHODS OF CONSTRUCTION
  9. Chapter 8-9 — MECHANICAL, PLUMBING AND ELECTRICAL REQUIREMENTS
  10. Chapter 8-10 — QUALIFIED HISTORICAL DISTRICTS, SITES AND OPEN …

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