Basics

A Concept Wherein All of the Various Chimneys/Flues/Vents are rounted and merged into one larger device
Allows for a more enclosed roof, and thus less seals, and a Points of Failure for future Roof Leaks to develop
Also may allow for more usable solar roof area due to no protruding Plumbing Venting
Could allow for material recovery ( Fly Ash and Dryer Lint ), both reducing the (albeit minor) pollution, and allowing valuable materials to be gained

Potential Sources