Home / Requirements / Kittitas Table 503.1 N.C. wall

Kittitas County Table 503.1 one-hour noncombustible-wall addition

Kittitas County Table 503.1 adds an exterior wall with at least a one-hour fire-resistance rating and a noncombustible exterior surface to specified IR1 outcomes.

Both documented properties are required for this product-level path. The complete exterior wall, official hazard class, water and defensible-space inputs, Table 503.1 result, project scope, log-wall alternative, and County approval remain checks.

code · Unincorporated Kittitas County Table 503.1 N.C. outcomes · Last verified 2026-08-27 · JSON (CC BY 4.0)

Published requirement text

“Exterior walls shall have a fire-resistance rating of not less than 1-hour and the exterior surfaces of such walls shall be noncombustible.”

Kittitas County Code Title 20, Table 503.1 — Kittitas County

Where this instrument is documented

Instrument kcc-14-12-20-10.

Set a location to read how this instrument lands where you are.

Place	Force	Reach	Dated	Checks open	Source
Kittitas County	active application documented	unincorporated county	adopted 2021-03-02	7	Kittitas County Code Title 20, Chapter 20.10 Wildland Urban Interface Code

Each place page carries that place's boundary, project scope and open official checks in full; this page's JSON twin carries them per application.

Machine-readable constraints

Attribute	Operator	Value
fireResistanceMinutes	gte	60
noncombustible	eq	true

Sources

Kittitas County Code Title 20, Table 503.1 — Kittitas County (official). Accessed 2026-08-27.

Kittitas County Table 503.1 one-hour noncombustible-wall addition. FireApproved. https://fireapproved.com/requirements/kcc-20-10-table-503-nc-exterior-wall/. Last verified 2026-08-27.