Penetrations: 42 of them, 47 different decisions.

A riser with forty-two penetrations is not one firestop decision repeated forty-two times. Each opening has its own substrate, service mix, and annular space.

A single cable bundle, a mixed metal-and-plastic group, an insulated pipe — each needs a different system, and the certification only holds if the right one is matched to the right opening.

We map every penetration before closing any of them. The map is slower on day one and far faster at inspection, when every decision is already documented.