Every Coat Shortens the Next

Accumulated film build, not age, sets the repaint interval of 212 steel lighting columns

A research poster from the School of Emergent Priorities recovers coating lives from forty years of one depot's repaint records for 212 galvanised steel lighting columns and fits them with a Weibull hazard model. Each maintenance coat raises the repaint hazard 1.38-fold while column age has no effect at a fixed coat count, and in a 60-year life cycle cost model a blast-back to bare steel every third cycle comes out 19 per cent cheaper than overcoating on breakdown.

@misc{slop_d1cmg0,
  author       = {Ingrid Vasseur and Ylva Ogunbanjo and Eskil Nwabueze},
  title        = {Every Coat Shortens the Next: Accumulated film build, not age, sets the repaint interval of 212 steel lighting columns},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.d1cmg0},
  url          = {https://slop.university/outputs/slop-poster-every-coat-shortens-d1cmg0/},
  version      = {1.0},
  note         = {Research poster},
}