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Earlier editions: 20222019

Appendix BN — EXTENDED PLATE WALL CONSTRUCTION

BN101 General — 2025 California Residential Code

California Residential Code (Title 24, Part 2.5) · 2025 edition · updated 2026-10-19 · California

CBSC: official editions, supplements and errata

Italicized text is a California amendment to the model code, as printed in the official publication.

Cite as: 2025 California Residential Code (Title 24, Part 2.5) § BN101 · Effective January 1, 2026 · Official source: Building Standards Commission

BN101.1 General.

Detached one- and two-family or townhouse buildings using extended plate wall (EPW) construction shall comply with this code and all of the following:

  1. Not more than two stories above grade plane in height.
  2. Limited to Seismic Design Categories A and B as determined from Figures R301.2.2.1(1) through (7).
  3. Limited to ultimate design wind speeds not more than 115 mph (185 kph) as determined from Figure R301.2(2).
  4. Comply with the provisions of Section R602, except as modified by the provisions of this appendix.

Exception: Buildings using EPW construction in accordance with an approved design by a registered design professional.

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▸Contents — California Residential Code (Title 24, Part 2.5)
California Residential Code (Title 24, Part 2.5)

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