← Back to the building1933 reconstruction · research preview

The measured building.

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.

Source photographs: 464
Identified objects: 4872
Verified printed values: 12046
Disputed values: 20

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)

Open the coordinated research model →

6 matching properties

Object: Stair E · W225 longitudinal Section A-A

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.

stair-e-w225-section-aaverified · printed

First-floor finished elevation

EL. 93.25 FINISH 1ST FLOOR

93.25 ft-drawing-datum

Original drawing datum retained; local model datum conversion remains a separate property.

IMG_1262 · sheet-W225 · Locate on drawing ↗

Drawing notation: DETAILS OF STAIR E / LOWER STORIES / W225

One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.

stair-e-w225-section-aaverified · printed

Upper repeated condition

FINISH 3RD, 4TH & 5TH FLOORS

3 storeys

W225 groups these finished-floor conditions; exact flight geometry and storey exceptions remain unresolved.

IMG_1262 · sheet-W225 · Locate on drawing ↗

Drawing notation: DETAILS OF STAIR E / LOWER STORIES / W225

One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.

stair-e-w225-section-aaverified · observed

Basement-to-first depicted flight count

2 flights

2 flights

Section A-A visibly depicts two stair flights separated by one intermediate landing. Individual riser counts and exact runs remain unresolved.

IMG_1262 · sheet-W225 · Locate on drawing ↗

Drawing notation: DETAILS OF STAIR E / LOWER STORIES / W225

One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.

stair-e-w225-section-aaverified · observed

Basement-to-first depicted intermediate landing count

1 intermediate landing

1 landings

Topology observed in Section A-A; landing polygon, elevation and construction remain unresolved.

IMG_1262 · sheet-W225 · Locate on drawing ↗

Drawing notation: DETAILS OF STAIR E / LOWER STORIES / W225

One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.

stair-e-w225-section-aaverified · observed

First-to-second depicted flight count

3 flights

3 flights

Section A-A visibly depicts three stair flights with two intermediate landings. Individual riser counts and exact runs remain unresolved.

IMG_1262 · sheet-W225 · Locate on drawing ↗

Drawing notation: DETAILS OF STAIR E / LOWER STORIES / W225

One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.

stair-e-w225-section-aaverified · observed

First-to-second depicted intermediate landing count

2 intermediate landings

2 landings

Topology observed in Section A-A; landing polygons, elevations and construction remain unresolved.

IMG_1262 · sheet-W225 · Locate on drawing ↗

Drawing notation: DETAILS OF STAIR E / LOWER STORIES / W225

One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.

Source-by-source coverage

Source inventory is separate from the floor filters above. Select one drawing to inspect it; no drawing set is preloaded.