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Chapter 8-8 — ARCHAIC MATERIALS AND METHODS OF CONSTRUCTION

Section 8-808 — CONCRETE

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

8-808.1 Materials. Natural cement concrete, unreinforced rubble concrete and similar materials may be utilized wherever that material is used historically. Concrete of low strength and with less reinforcement than required by the regular code may remain in place. The architect or engineer shall assign appropriate values of strength based on testing of samples of the materials. Bond and development lengths shall be determined based on historical information or tests.

8-808.2 Detailing. The architect or engineer shall carefully evaluate all detailing provisions of the regular code which are not met and shall consider the implications of these variations on the ultimate performance of the structure, giving due consideration to ductility and reserve strength.

16 2025 CALIFORNIA HISTORICAL BUILDING CODE

on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

ARCHAIC MATERIALS AND METHODS OF CONSTRUCTION

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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
  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
    Overview
    1. Section 8-801 — PURPOSE, INTENT AND SCOPE
    2. Section 8-802 — GENERAL ENGINEERING APPROACHES
    3. Section 8-803 — NONSTRUCTURAL ARCHAIC MATERIALS
    4. Section 8-804 — ALLOWABLE CONDITIONS FOR SPECIFIC MATERIALS
    5. Section 8-805 — MASONRY
    6. Section 8-806 — ADOBE
    7. Section 8-807 — WOOD
    8. Section 8-808 — CONCRETE
    9. Section 8-809 — STEEL AND IRON
    10. Section 8-810 — HOLLOW CLAY TILE
    11. Section 8-811 — VENEERS
    12. Section 8-812 — GLASS AND GLAZING
  9. Chapter 8-9 — MECHANICAL, PLUMBING AND ELECTRICAL REQUIREMENTS
  10. Chapter 8-10 — QUALIFIED HISTORICAL DISTRICTS, SITES AND OPEN …

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