Trade knowledge, checked against the source.
Journeymen is a set of storehouses for the trades — what the code actually says, what the work actually takes, gathered from the people who do it and checked against the documents that govern it.
Storehouses
Signs — open now. Sign codes for 1,000 cities and counties: what each one allows, how it measures, what it still leaves unverified, and who has jurisdiction.
Electric — building.
Housebuilding — building.
Plumbing — planned.
The rule of the house
Every record shows where it came from and how sure we are. If a field isn't verified, the page says so in plain sight. Nothing here is dressed up to look more certain than it is.
Reference only. Compiled from the cited code as of the date shown; ordinances change. Confirm with the authority having jurisdiction before designing or permitting a sign.