Architectural Drawings - Carpenter's and Builder's Math, Plans, and Specifications - page 264

Figure 9-11 Owner's sketch of the first floor of a residence.

The final drawings are sent to the plan checkers of the inspection
departments having jurisdiction. Here, they are checked to see that
they conform to local codes. Corrections are noted, or the plans are
approved. Most specifications that accompany plans put the burden
of following applicable local codes on the builders and contractors.
When questions arise (such as an electrical or mechanical problem),
the contractor involved takes these problems up with the architect
or an assistant who, in turn, takes them to the engineer who has
performed the design work.