Think of public restrooms as the Arctic expedition, Sahara desert traverse, or trek through the Amazon of architecture; the public restroom is one of those extreme environments where you plan for the worst and hope for the best.  Your typical public toilet faces all possible byproducts of humankind, harsh chemical cleaners, random acts of vandalism, water, fungus, insects, rodents, and the full spectrum of microorganisms.  Ceramic materials are specified in public restrooms because smooth glazed surfaces are easier to keep clean and damaged tiles can be replaced without too much trouble, but the chemicals required to sanitize public …