San Francisco Cistern

thingiverse

This is a model of what I imagine one of the San Francisco underground cisterns would look like. There are 170 or so of them spread throughout the city. They’re part of the ​AWSS (Auxiliary Water Supply System) of San Francisco, a water system that exists entirely for emergency use and is separate from the potable drinking water supply and the sewer system. How do you create a 3D model of something that lives underground and only exists in a handful of pictures taken from the interior? Instructions I used Fusion 360 and a reference photograph of a cistern. I drew the outline, then swept the form to make a 3D shape. Finally, added a few details.