Remove the "U" from a dwelling & you get a tubular water carrier
[DOC] [TLE] StudyGuide_Residential Plumbing - Free Inspector Training and ... [PAR] As a member of InterNACHI, you may check your education folder, transcript, and 
... identify, in written format, the inspected plumbing system of the dwelling, and 
should also .... Q. evaluate wait-time to obtain hot water at fixtures, or perform ... 
to a receptacle (sink, tank, fixture, or other device) and the flood-level rim of that.