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.
22 count
Drawing notation: UP 22R
Number of risers in the marked up flight only. Riser height, tread depth, landing elevations and opposite/down flight require detail sheets.
L-shaped gross plan of visible flights and landings wrapping Elevator No. 2. Not an accepted stairwell opening.
Drawing notation: STAIR C
Manually traced region in raw-upright JPEG coordinates; not an exact architectural measurement.
73.613 ft · estimated uncertainty ±2 ft
Drawing notation: STAIR C
Manually traced region in raw-upright JPEG coordinates; not an exact architectural measurement.
Calculated from: f1-stair-c-footprint-trace
43.484 ft · estimated uncertainty ±2 ft
Drawing notation: STAIR C
Manually traced region in raw-upright JPEG coordinates; not an exact architectural measurement.
Calculated from: f1-stair-c-footprint-trace
77.49 ft · estimated uncertainty ±2 ft
Drawing notation: STAIR C
Manually traced region in raw-upright JPEG coordinates; not an exact architectural measurement.
Calculated from: f1-stair-c-footprint-trace
43.419 ft · estimated uncertainty ±2 ft
Drawing notation: STAIR C
Manually traced region in raw-upright JPEG coordinates; not an exact architectural measurement.
Calculated from: f1-stair-c-footprint-trace
77.42 ft · estimated uncertainty ±2 ft
Drawing notation: STAIR C
Manually traced region in raw-upright JPEG coordinates; not an exact architectural measurement.
Calculated from: f1-stair-c-footprint-trace
61.51 ft · estimated uncertainty ±2 ft
Drawing notation: STAIR C
Manually traced region in raw-upright JPEG coordinates; not an exact architectural measurement.
Calculated from: f1-stair-c-footprint-trace
61.075 ft · estimated uncertainty ±2 ft
Drawing notation: STAIR C
Manually traced region in raw-upright JPEG coordinates; not an exact architectural measurement.
Calculated from: f1-stair-c-footprint-trace
61.546 ft · estimated uncertainty ±2 ft
Drawing notation: STAIR C
Manually traced region in raw-upright JPEG coordinates; not an exact architectural measurement.
Calculated from: f1-stair-c-footprint-trace
61.239 ft · estimated uncertainty ±2 ft
Drawing notation: STAIR C
Manually traced region in raw-upright JPEG coordinates; not an exact architectural measurement.
Calculated from: f1-stair-c-footprint-trace
55.865 ft · estimated uncertainty ±2 ft
Drawing notation: STAIR C
Manually traced region in raw-upright JPEG coordinates; not an exact architectural measurement.
Calculated from: f1-stair-c-footprint-trace
72.537 ft · estimated uncertainty ±2 ft
Drawing notation: STAIR C
Manually traced region in raw-upright JPEG coordinates; not an exact architectural measurement.
Calculated from: f1-stair-c-footprint-trace
55.778 ft · estimated uncertainty ±2 ft
Drawing notation: STAIR C
Manually traced region in raw-upright JPEG coordinates; not an exact architectural measurement.
Calculated from: f1-stair-c-footprint-trace
Printed room or assembly finish category; thickness, exact boundary, construction and installed geometry remain unresolved.
Drawing notation: MAIN STAIRS 'A' AND 'C' - 1ST TO 2ND FLOOR: MARBLE TREADS
Upright IMG_1202 WebP; note-block line locator, not finish boundary or object placement.
Printed room or assembly finish category; thickness, exact boundary, construction and installed geometry remain unresolved.
Drawing notation: MAIN STAIRS 'A' AND 'C' - 1ST TO 2ND FLOOR: RISERS
Upright IMG_1202 WebP; note-block line locator, not finish boundary or object placement.
Printed room or assembly finish category; thickness, exact boundary, construction and installed geometry remain unresolved.
Drawing notation: MAIN STAIRS 'A' AND 'C' - 1ST TO 2ND FLOOR: BASE
Upright IMG_1202 WebP; note-block line locator, not finish boundary or object placement.
Printed room or assembly finish category; thickness, exact boundary, construction and installed geometry remain unresolved.
Drawing notation: MAIN STAIRS 'A' AND 'C' - 1ST TO 2ND FLOOR: WAINSCOT
Upright IMG_1202 WebP; note-block line locator, not finish boundary or object placement.
Printed room or assembly finish category; thickness, exact boundary, construction and installed geometry remain unresolved.
Drawing notation: MAIN STAIRS 'A' AND 'C' - 1ST TO 2ND FLOOR: PLASTER CORNICE
Upright IMG_1202 WebP; note-block line locator, not finish boundary or object placement.
Printed room or assembly finish category; thickness, exact boundary, construction and installed geometry remain unresolved.
Drawing notation: MAIN STAIRS 'A' AND 'C' - 1ST TO 2ND FLOOR: CEILING
Upright IMG_1202 WebP; note-block line locator, not finish boundary or object placement.
Horizontal strip is page-bottom/Main side and vertical strip page-right/Broadway side of Elevator2, consistent with basement wrapper sides. This records relationship, not alignment/snapping.
Drawing notation: STAIR C / ELEVATOR NO.2 [perpendicular strips]
Horizontal strip is page-bottom/Main side and vertical strip page-right/Broadway side of Elevator2, consistent with basement wrapper sides. This records relationship, not alignment/snapping.
Source marks both upward and downward portions at floor1. Numeric counts remain in prior verified records and W223 source packages; no count-chain duplication.
Drawing notation: UP 36R; DOWN 22R
Source marks both upward and downward portions at floor1. Numeric counts remain in prior verified records and W223 source packages; no count-chain duplication.
The host sides are secure; exact arrow direction and three-flight transition to W223 remain unreviewed.
Drawing notation: UP 36R [signed path unresolved]
The host sides are secure; exact arrow direction and three-flight transition to W223 remain unreviewed.
Source inventory is separate from the floor filters above. Select one drawing to inspect it; no drawing set is preloaded.