US lawWashingtonRegulationsTitle 296 — LABOR AND INDUSTRIES, DEPARTMENT OFChapter 296-24 — GENERAL SAFETY AND HEALTH STANDARDS296-24-76523WAC 296-24-76523WAC 296-24-76523. GeneralLast amended: 1973Year: 2026Length: 9 wordsOfficial source Open grating type treads are desirable for outside stairs.PreviousWAC 296-24-76521NextWAC 296-24-76555