Every dimension belongs to an object and a drawing. Original room numbers, object marks, printed values and source regions stay together—even when the answer is unresolved.
464 of 464 photographs have extraction records, containing 27,517 properties. Initial image review is not exhaustive extraction: 0 photographs have passed the full-region check. 66 numbered sheets are reconciled. Modeling and architectural registration are separate work; these counts do not establish a complete building.
Download the structured register (JSON)Object: STAIR C
Printed values, calculations, image traces and observed counts are different kinds of evidence. “Verified” applies to the specific reading—not to the whole room or model.
Gross stair assembly envelope only; exact floor opening, flight geometry and landing elevations remain unresolved.
Drawing notation: STAIR C
Raw-upright master source locator; trace is approximate.
57.041 ft · estimated uncertainty ±2.5 ft
Drawing notation: STAIR C
Raw-upright master source locator; trace is approximate.
Calculated from: f2-stair-c-footprint-trace
41.341 ft · estimated uncertainty ±2.5 ft
Drawing notation: STAIR C
Raw-upright master source locator; trace is approximate.
Calculated from: f2-stair-c-footprint-trace
76.199 ft · estimated uncertainty ±2.5 ft
Drawing notation: STAIR C
Raw-upright master source locator; trace is approximate.
Calculated from: f2-stair-c-footprint-trace
41.54 ft · estimated uncertainty ±2.5 ft
Drawing notation: STAIR C
Raw-upright master source locator; trace is approximate.
Calculated from: f2-stair-c-footprint-trace
76.14 ft · estimated uncertainty ±2.5 ft
Drawing notation: STAIR C
Raw-upright master source locator; trace is approximate.
Calculated from: f2-stair-c-footprint-trace
49.989 ft · estimated uncertainty ±2.5 ft
Drawing notation: STAIR C
Raw-upright master source locator; trace is approximate.
Calculated from: f2-stair-c-footprint-trace
72.494 ft · estimated uncertainty ±2.5 ft
Drawing notation: STAIR C
Raw-upright master source locator; trace is approximate.
Calculated from: f2-stair-c-footprint-trace
49.947 ft · estimated uncertainty ±2.5 ft
Drawing notation: STAIR C
Raw-upright master source locator; trace is approximate.
Calculated from: f2-stair-c-footprint-trace
72.643 ft · estimated uncertainty ±2.5 ft
Drawing notation: STAIR C
Raw-upright master source locator; trace is approximate.
Calculated from: f2-stair-c-footprint-trace
47.91 ft · estimated uncertainty ±2.5 ft
Drawing notation: STAIR C
Raw-upright master source locator; trace is approximate.
Calculated from: f2-stair-c-footprint-trace
56.844 ft · estimated uncertainty ±2.5 ft
Drawing notation: STAIR C
Raw-upright master source locator; trace is approximate.
Calculated from: f2-stair-c-footprint-trace
47.408 ft · estimated uncertainty ±2.5 ft
Drawing notation: STAIR C
Raw-upright master source locator; trace is approximate.
Calculated from: f2-stair-c-footprint-trace
36 count
Drawing notation: DOWN 36R
Applies to the marked flight only; not a floor-to-floor rise or a complete stair model.
Second-floor C down-marked strip is on Madison/south/page-top side of Elevator2, unlike lower-floor Main-side wrapper strip. It is a down endpoint; source provides no upward C connection here.
Drawing notation: DOWN 36R / STAIR C [flight strip above Elevator No.2]
Second-floor C down-marked strip is on Madison/south/page-top side of Elevator2, unlike lower-floor Main-side wrapper strip. It is a down endpoint; source provides no upward C connection here.
No UP annotation established by selected crop; absence of a mark is not proof of all historical connections. Withhold floor2-to3 ascent.
No UP annotation established by selected crop; absence of a mark is not proof of all historical connections. Withhold floor2-to3 ascent.
Source inventory is separate from the floor filters above. Select one drawing to inspect it; no drawing set is preloaded.