In US, I live in Illinois, the state we install water pipe thats pex, cpvc, and copper. For drainage, we use PVC, but in the city of Chicago the drainage is cast iron.
this post was submitted on 24 Jul 2023
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Why in Chicago you use cast iron?
Mostly political reasons haha, the plumbers union has done a lot of work to keep cast iron in the code, because it means the people doing it have to be skilled plumbers. There are other benefits of it though, like if a building catches fire, plastic will melt and the fire could easily spread to other floors through the holes while cast iron would block it.
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What is this?
Water pipe: pex-a & pex-b and copper DWV: cast iron & abs Pumped waste: sched 40/80 pvc
Ceramic for older Australian houses. PVC is now used all over.
Ceramic pipe?
Clay or terracotta is more accurate.