US lawWashingtonRegulationsTitle 51 — ENTERPRISE SERVICES, DEPARTMENT OF (BUILDING CODE COUNCIL)Chapter 51-11R — STATE BUILDING CODE ADOPTION AND AMENDMENT OF THE 2021 EDITION OF THE INTERNATIONAL ENERGY CONSERVATION CODE, RESIDENTIAL51-11R-60000WAC 51-11R-60000WAC 51-11R-60000. Appendix RC—Exterior design conditionsLast amended: 2020Year: 2026Length: 18 wordsOfficial source As required by Section R302.2, the heating or cooling outdoor design temperatures shall be selected from Table RC-1.PreviousWAC 51-11R-59000NextWAC 51-11R-60100