Start with the arch repair book and samples held by the public archive. It is the source used to decide how a repair can preserve safety while making new material visible in the public record; it is not the decision itself. The rule only works if the source describes conditions at the west arch at Reed Hall.
Known: the current file counts 75 replacement stones with a recorded source and date, compared with 77 in the prior window. Stewards post the result alongside the original measurement. The entries have dates and a named clerk.
Disputed: Masons prioritize a stable joint. Conservators want later readers to distinguish repair from original work. One side emphasizes the posted total; the other points to the repair uses a newer aggregate than the original arch.
Why it matters: the decision determines which residents can rely on the service and which staff must carry out the change. The file does not settle that by itself.
Next: The responsible office has begun the follow-up set by the board, which approved a seasonal trial with a named habitat review.
