Mop Sink, Gully or Bin: Where a Snow Build’s Meltwater Should Go
The de-rig was going well until someone tipped four buckets of melted snow into the cleaners’ sink. Twenty minutes later the mop sink backed up, the floor outside the toilets had 5 mm of standing water, and a plumber spent two hours rodding a 50 mm trap that had filled with a rubbery gel plug….