{"id":"fire-extinguisher","version":"0.1.0","classification":{"uniformat":"D4030"},"names":["Portable fire extinguisher"],"aliases":["extinguisher","ABC extinguisher"],"service_life":{"median_years":12.5,"range_years":[10,15],"range_basis":"source_spread"},"pm_tasks":[],"basis":[{"type":"public_document","life_type":"planning","title":"CNA e-Tool Estimated Useful Life Table","by":"U.S. Department of Housing and Urban Development","url":"https://www.hud.gov/sites/documents/eul_for_cna_e_tool.pdf","page":15,"code":"HUD CNA 3.6.1.4","label":"Fire extinguishers","years":[10,15],"note":"Family properties 10 years, elderly 15. US multifamily housing."}],"confidence":{"grade":"C","sample_size":null},"open_questions":["Only one source so far: HUD planning lives for US multifamily housing. Canadian and observed sources are needed.","No preventive maintenance tasks are sourced yet."],"contributors":["unfinished.one editors"],"last_reviewed":"2026-10-21","canonical_url":"https://unfinished.one/c/fire-extinguisher","versioned_url":"https://unfinished.one/c/fire-extinguisher/v/0.1.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Portable fire extinguisher, v0.1.0. https://unfinished.one/c/fire-extinguisher/v/0.1.0"}