A results section that renders cleanly having drawn nothing is the most dangerous page in a fire engineering document. It reads as reassurance. Ashbeck writes the absence down, in the same section, in the same voice as a result.
The pressure check is one of the hardest blockers in the register — it is the one written from the sealed-vessel run that reached 60,275 Pa. The report had carried a pressure figure family for as long as it had a results section.
And no deck we ever produced wrote a single pressure slice. The family had nothing feeding it. A reader could be handed a blocking finding about pressure with no field anywhere in the document to look at — which is precisely how a finding gets overruled by someone in a hurry.
A finding whose evidence cannot be seen is a finding people learn to override.
The report now draws twelve figures across four families, up from four. Each is a six-panel time strip through the run, so the reader sees development rather than a single flattering instant.
| Family | Figures | Why it is in the document |
|---|---|---|
| Smoke visibility | 3 | Visibility governs available-safe-egress time in most smoke-filling scenarios. The limit applied is stated in the criteria table, not assumed. |
| Gas temperature | 3 | Convective exposure on the escape route, and the depth and temperature of the smoke layer. |
| Velocity | 3 | Where the smoke is actually being driven, and whether an opening, a shaft or a fan is doing what the strategy assumes it does. |
| Pressure | 3 | Whether the protected route stays clear and whether its doors remain openable. Emitted only where leakage is declared — see below. |
Each family gets a plan and sections through the protected route. The plan is the one that carries the most weight for pressure, because pressure is a compartment-to-compartment finding and is near-uniform through the height of a zone — a section shows far less there than it does for temperature or smoke.
Pressure planes are emitted only where the model declares leakage. Without pressure zones the field is uniformly ambient by construction — and a figure showing no pressure anywhere, drawn from a model incapable of producing any, is worse than no figure at all. It reads as a clean bill of health.
On those runs the report states the family as a gap and explains why. That is the honest answer, and it is a different statement from "we looked and found nothing".
Figures are capped, and the cap is real — rendering is bounded by a figure count, a slice-data budget and a time budget, because a report job that runs forever is a report that never arrives. When any of those bounds is hit, the document says so, names the figure that was skipped and states the limit that stopped it.
This is the difference between a missing figure and a silent one. A reader who knows what is absent can ask for it. A reader who does not know assumes the document is complete.
The document carries a quantified per-space results table, not only pictures. Every criterion is assessed against a stated assessment window — and where a criterion could not be evaluated within it, the row says NOT EVALUATED and gives the reason rather than being dropped.
The assessment window itself is declared, not inferred. A study that quietly assesses tenability over the third of the run where the fire happened to look best is a study that answers a question nobody asked.
The specimen assessment report is the complete output for a worked scheme — figures, criteria, findings, gaps and all. It is the fastest way to judge whether this meets the standard you would sign.