{"id":"catch-basin","version":"0.7.0","classification":{"uniformat":"G3030"},"names":["Catch basin"],"aliases":["CB","storm inlet"],"service_life":{"median_years":50,"range_years":[50,90],"range_basis":"source_spread"},"pm_tasks":[{"task":"Inspect frame and top slab","frequency":"P1Y","reference":"TSPWG Manual 3-260-03.04-6 Inspection of Pavement Drainage Systems","url":"https://www.wbdg.org/FFC/DOD/STC/tspwg_m_3-260-03_04-6.pdf","page":10,"checklist":"Table 2-1 Inspection Schedule for Catch Basins, Manholes, Handholes, and Drop Inlets"},{"task":"Inspect structural condition","frequency":"P1Y","reference":"TSPWG Manual 3-260-03.04-6 Inspection of Pavement Drainage Systems","url":"https://www.wbdg.org/FFC/DOD/STC/tspwg_m_3-260-03_04-6.pdf","page":10,"checklist":"Table 2-1 Inspection Schedule for Catch Basins, Manholes, Handholes, and Drop Inlets"},{"task":"Inspect ladder","frequency":"P1Y","reference":"TSPWG Manual 3-260-03.04-6 Inspection of Pavement Drainage Systems","url":"https://www.wbdg.org/FFC/DOD/STC/tspwg_m_3-260-03_04-6.pdf","page":10,"checklist":"Table 2-1 Inspection Schedule for Catch Basins, Manholes, Handholes, and Drop Inlets"}],"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":1,"code":"HUD CNA 3.2.2.1","label":"Catch basins, inlets, culverts","years":50,"note":"Same life for family and elderly properties. US multifamily housing. HUD's row also covers inlets and culverts. HUD's row is for site work at US multifamily properties, not municipal networks."},{"type":"public_document","life_type":"accounting","title":"Greater Napanee: By-law 2012-11, Tangible Capital Asset Policy, Appendix B Asset Useful Lives","url":"https://greaternapanee.civicweb.net/document/45679","page":17,"years":75,"note":"Capital asset policy (amortization period). Compared with an image of the cited page."},{"type":"public_document","life_type":"planning","title":"Greater Sudbury: Enterprise Asset Management Plan (2023)","url":"https://www.greatersudbury.ca/city-hall/budget-and-finance/financial-reports-and-plans/pdf-documents/enterprise-asset-management-plan/","page":30,"years":70,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"Grey Highlands: By-law No. 2026-052, Tangible Capital Asset Policy A09-F-03","url":"https://greyhighlands.civicweb.net/document/406218/","page":10,"years":50,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"Kenora: AF-6-1 Tangible Capital Asset Policy (By-law 34-2026)","url":"https://listview.kenora.ca/Files/City%20Policy%20Manual/Administration%20and%20Finance/AF-6-1%20Tangible%20Capital%20Asset.pdf","page":16,"years":50,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"Prince Edward: FIN-12 Tangible Capital Assets Policy","url":"https://www.thecounty.ca/wp-content/uploads/2023/09/FIN-12-Tangible-Capital-Asset-Policy.pdf","page":34,"years":50,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"Sarnia: Finance-04 Tangible Capital Asset Policy, Attachment No. 1: TCA Policy Appendix A","url":"https://www.sarnia.ca/app/uploads/2020/07/Finance-04-Tangible-Capital-Asset-Policy-Attachment-No.-1-TCA-Policy-Appendix-A.pdf","page":2,"years":50,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"Severn: By-law 2019-04, Corporate Policy Manual: Tangible Capital Asset Policy, Useful Life Guide","url":"https://severn.civicweb.net/document/10628/","page":402,"years":50,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"Severn: By-law 2019-04, Corporate Policy Manual: Tangible Capital Asset Policy, Useful Life Guide","url":"https://severn.civicweb.net/document/10628/","page":402,"years":50,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"Amherstburg: Asset Management Plan Town of Amherstburg 2025","url":"https://www.amherstburg.ca/media/w5qhko4r/2025-amp-final-2025-06-30-rm-with-appendices.pdf","page":62,"years":50,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"Bruce: Asset Management Plan 2025, Bruce County","url":"https://www.brucecounty.on.ca/sites/default/files/BruceCounty_2025AMP_FINAL.pdf","page":67,"years":75,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"Chatham-Kent: Detailed Asset Management Plan: Stormwater 2025","url":"https://www.chatham-kent.ca/localgovernment/budget/Documents/DAMP%20Reports/2024/DAMP%20-%20Stormwater.pdf","page":11,"years":75,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"Kirkland Lake: Asset Management Plan 2025 Town of Kirkland Lake","url":"https://kirklandlake.civicweb.net/document/32531/","page":95,"years":50,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"Oxford: Oxford County Asset Management Plan 2025","url":"https://webresources.oxfordcounty.ca/documents/Oxford%20County%20Asset%20Management%20Plan-6-25.pdf","page":326,"years":90,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"Peterborough: Asset Management Plan 2025 - Peterborough County","url":"https://media-002-ca.cdn.govstack.com/thekawarthas-012-ca/media/juqptohr/asset-management-plan-2025.pdf","page":71,"years":50,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"Sault Ste. Marie: Stormwater Asset Management Plan, City of Sault Ste. Marie","url":"https://saultstemarie.ca/wp-content/uploads/2025/07/RPT_City-of-Sault-Ste-Marie-Asset-Management-Plan-Stormwater_Final_June_2025.pdf","page":14,"years":80,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"Stormont: Asset Management Plan 2025","url":"https://www.sdgcounties.ca/sites/default/files/2026-01/SDG_2025%20AMP_Website.pdf","page":27,"years":75,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."}],"confidence":{"grade":"C","sample_size":null},"open_questions":["HUD gives planning lives for US multifamily housing; the municipal rows are Ontario accounting lives. Neither is observed replacement data."],"contributors":["unfinished.one editors"],"last_reviewed":"2026-10-22","canonical_url":"https://unfinished.one/c/catch-basin","versioned_url":"https://unfinished.one/c/catch-basin/v/0.7.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Catch basin, v0.7.0. https://unfinished.one/c/catch-basin/v/0.7.0"}