Before a slab is poured, the grid is drawn again on the deck. Columns, shafts, and the edge of the balcony are marked from the structural drawing, not from memory of yesterday’s pour.
Razz treats that hour as part of the architecture. A balcony that is fifty millimetres shy changes the room behind it. A shaft that drifts makes the plumber the designer. Neither is a small snag later.
Owners who want to visit are welcome at setting-out. There is not much to see except chalk, string, and a conversation. That is the point. The building is still a decision.