The Gate
Turnstiles, readers and sign-in books. What each actually delivers, and the single failure that defeats all of them.
Analysis
The register
Everything depends on knowing who came through and who went back out. The second half is where every method fails.
4 notes
The Roll Call
The reason the register exists, the one use where being wrong has consequences that are not commercial, and what it requires of everything upstream.
Procedure
The Site Diary and the Daily Record
The oldest record on a construction site, what it is used for years later, and why the access data should feed it rather than replace it.
Procedure
Running the Gate
The half hour at shift start that determines whether the whole arrangement is workable, and the decisions the gateman should not be making.
Procedure