← 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 →

4 matching properties

Object: Elevator 3 machine-room plan

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.

stairs1014y-1137-machineverified · printed

machine_room_horizontal_clear_hatch_below_witness

8′-0″ CLEAR HATCH BELOW

96 in

Horizontal dimension through dashed hatch below in machine-room plan; no equipment footprint inferred. Source-local only; no installed geometry or historical issue selected.

IMG_1137 · W-231 · Locate on drawing ↗

Drawing notation: 8′-0″ CLEAR HATCH BELOW

Horizontal dimension through dashed hatch below in machine-room plan; no equipment footprint inferred. Source-local only; no installed geometry or historical issue selected.

stairs1014y-1137-machineverified · printed

machine_room_vertical_clear_hatch_below_witness

9′-0″ CLEAR HATCH BELOW

108 in

Independent vertical dimension through dashed hatch below; source-local hatch extent only. Source-local only; no installed geometry or historical issue selected.

IMG_1137 · W-231 · Locate on drawing ↗

Drawing notation: 9′-0″ CLEAR HATCH BELOW

Independent vertical dimension through dashed hatch below; source-local hatch extent only. Source-local only; no installed geometry or historical issue selected.

stairs1014y-1137-machineverified · printed

machine_room_lower_left_horizontal_chain_segment

4′-9″

57 in

Bottom horizontal segment from left wall witness to next chain station; no world-axis assignment. Source-local only; no installed geometry or historical issue selected.

IMG_1137 · W-231 · Locate on drawing ↗

Drawing notation: 4′-9″

Bottom horizontal segment from left wall witness to next chain station; no world-axis assignment. Source-local only; no installed geometry or historical issue selected.

stairs1014y-1137-machineverified · printed

machine_room_lower_second_horizontal_chain_segment

3′-6″

42 in

Adjacent bottom horizontal chain segment toward Section A line; maintained separately from 4ft9in segment. Source-local only; no installed geometry or historical issue selected.

IMG_1137 · W-231 · Locate on drawing ↗

Drawing notation: 3′-6″

Adjacent bottom horizontal chain segment toward Section A line; maintained separately from 4ft9in segment. Source-local only; no installed geometry or historical issue selected.

Source-by-source coverage

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