Wrapping up the DWV portion of the condos.
More Drawings getting use to visualizing and representing the patterns of DWV arrangements
Quiz on DWV Identification, Dual vents, flat vents and residential storm drainage.
Interesting plumbing history here. What happens when your city is too low for gravity drainage systems?
If you are like Chicago, in the late 1800s, you raise the whole city so you can install DWV systems.
More plumbing history as we begin to study water supply. Interesting engineering experiment.
How to test a TPR valve.
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