Uniformat G3030

Catch basin

Also called CB, storm inlet

• Confidence C
• Version 0.3.0 (permanent link)
• Reviewed 2026-10-21

Service life

Years in service. The band runs from the shortest to the longest life the sources state, so it shows how much they disagree, not how long 80% of units last. The line is the median of the stated lives.

Basis

• 50 years · CNA e-Tool Estimated Useful Life Table, p1 · HUD CNA 3.2.2.1 “Catch basins, inlets, culverts” — U.S. Department of Housing and Urban Development (planning life)
  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.
• 70 years · Greater Sudbury: Enterprise Asset Management Plan (2023), p30 · “Catch Basin” (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 50 years · Grey Highlands: By-law No. 2026-052, Tangible Capital Asset Policy A09-F-03, p10 · “Catch Basins” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 50 years · Kenora: AF-6-1 Tangible Capital Asset Policy (By-law 34-2026), p16 · “Storm Sewers - Catch Basins” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 50 years · Prince Edward: FIN-12 Tangible Capital Assets Policy, p34 · “Storm - Catch basins” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 50 years · Sarnia: Finance-04 Tangible Capital Asset Policy, Attachment No. 1: TCA Policy Appendix A, p2 · “Catch Basins” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 50 years · Severn: By-law 2019-04, Corporate Policy Manual: Tangible Capital Asset Policy, Useful Life Guide, p402 · “Infrastructure - Water & Sewer - Catch Basins” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 50 years · Severn: By-law 2019-04, Corporate Policy Manual: Tangible Capital Asset Policy, Useful Life Guide, p402 · “Infrastructure - Water & Sewer - Double Catch Basins” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.

How sources are chosen and recorded: sourcing policy.

Preventive maintenance

No maintenance tasks are sourced for this component yet.

Open questions

• HUD gives planning lives for US multifamily housing; the municipal rows are Ontario accounting lives. Neither is observed replacement data.
• No preventive maintenance tasks are sourced yet.

Know the answer? Send it with a source to [email protected].

Cite this

Citation

unfinished.one (2026). Catch basin, v0.3.0. https://unfinished.one/c/catch-basin/v/0.3.0

BibTeX

@misc{unfinished_catch_basin_0_3_0,
  title = {Catch basin},
  author = {{unfinished.one}},
  year = {2026},
  version = {0.3.0},
  url = {https://unfinished.one/c/catch-basin/v/0.3.0},
  note = {CC BY 4.0}
}

Licence CC BY 4.0 · How to cite · JSON · Versions: 0.3.0, 0.2.0, 0.1.0