Vertical location matters because the observed floor and the responsible system segment may not be the same.
DOWNTOWN SEATTLE / GUIDE
Map the Building Plumbing Stack
Build a property-specific diagram from unit records, accessible labels, prior work, management information, and qualified findings.
PLUMBING ROUTE
Separate fixtures from shared piping
Separate the fixture, branch, riser, stack, common piping, private service, side sewer, and public connection.
A generic high-rise diagram cannot establish the actual configuration of a downtown building.
Use the building map without guessing concealed routes
Keep confirmed segments, assumed routes, inaccessible areas, and public infrastructure under different labels.