{"id":"storm-manhole","version":"0.6.0","classification":{"uniformat":"G3030"},"names":["Storm manhole"],"aliases":["storm maintenance hole"],"service_life":{"median_years":62.5,"range_years":[50,80],"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":"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,"label":"Storm Sewer System: Manholes","years":50,"note":"Capital asset policy (amortization period). Compared with an image of 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,"label":"Storm Sewers - Manholes","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":403,"label":"Infrastructure - Water & Sewer - Storm Manhole","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,"label":"Stormwater Manholes","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":"Bruce: Asset Management Plan 2025, Bruce County","url":"https://www.brucecounty.on.ca/sites/default/files/BruceCounty_2025AMP_FINAL.pdf","page":67,"label":"Stormwater - Manholes (weighted avg EUL)","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,"label":"Maintenance Holes","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":"Kirkland Lake: Asset Management Plan 2025 Town of Kirkland Lake","url":"https://kirklandlake.civicweb.net/document/32531/","page":95,"label":"Storm - Manholes","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":"Orillia: City of Orillia Asset Management Plan 2025","url":"https://www.orillia.ca/media/pjgfhy24/asset-management-plan-2025.pdf","page":146,"label":"Maintenance Holes","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":"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,"label":"Storm Manholes","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":"Stormont: Asset Management Plan 2025","url":"https://www.sdgcounties.ca/sites/default/files/2026-01/SDG_2025%20AMP_Website.pdf","page":27,"label":"Manholes","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":["These are Ontario accounting lives from municipal capital asset policies, not planning or observed replacement data."],"contributors":["unfinished.one editors"],"last_reviewed":"2026-10-22","canonical_url":"https://unfinished.one/c/storm-manhole","versioned_url":"https://unfinished.one/c/storm-manhole/v/0.6.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Storm manhole, v0.6.0. https://unfinished.one/c/storm-manhole/v/0.6.0"}