Traced envelope sill/threshold elevation candidate
82.7225 ft (provisional trace)82.7225 ft · estimated uncertainty ±1.5 ft
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)Original sheet identity has not yet been reconciled.
Extraction: Reviewed · extraction partial. Partial: façade opening identities/counts and selected printed datums. Drawing number, registration and opening dimensions still unresolved. Reuse of existing text/registered property data only; no new image review. Main upper wall corners and visible floor datum courses. 69 previously identified Broadway opening instances, individually repicked visible envelopes. Main coping/parapet/cornice/frieze/F3 belt envelopes. Basement dashed windows, sidewalk/finish-grade guide lines, visible boiler reference. Text-first physical-pilot gate 3 audit; existing reviewed plan, elevation and section records reused without reopening an archival image. Page-right 4/11 metric/cardinal conflict audit; Existing B02 visible elevation envelope, master pixels about x1199–1298/y1311–1437; opening mark was not independently decoded from this elevation. Page-right 4/11 metric/cardinal conflict audit; Existing B09 visible envelope, master pixels x2763–2864/y1318–1444; metric alternative only, not a confirmed key match. Page-right 4/11 metric/cardinal conflict audit; Right-end street label fixes right as south/Madison. Partial timed visual review: Text-only prior evidence inventory; catalogue labels are discovery-only and prior verified identity retained. Partial timed visual review: Source-local architectural evidence only; no physical registration, installed quantity or accepted geometry. Existing verified measurements omitted; conflicting locator readings preserved. Partial timed visual review: Bounded target crop inspection; source-local printed/observed evidence only.
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Scroll or pinch to inspect this drawing. Archival drawing photograph · Oregon Historical Society research collections.
Open source image separately ↗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.
82.7225 ft · estimated uncertainty ±1.5 ft
8.8973 ft · estimated uncertainty ±1.75 ft
Numeric value unresolved
Masonry/frame/clear-width distinction not resolved; do not use visible envelope as clear opening.
Circled mark visible, but exact numerator/denominator/type glyph not reliably read in this bounded review.
Material not established by outline or grille name.
7.9661 ft · estimated uncertainty ±2 ft
5.8361 ft · estimated uncertainty ±2 ft
91.9489 ft · estimated uncertainty ±1.5 ft
83.1358 ft · estimated uncertainty ±1.5 ft
8.8131 ft · estimated uncertainty ±1.75 ft
Numeric value unresolved
Masonry/frame/clear-width distinction not resolved; do not use visible envelope as clear opening.
Circled mark visible, but exact numerator/denominator/type glyph not reliably read in this bounded review.
Material not established by outline or grille name.
21.8026 ft · estimated uncertainty ±2 ft
5.9256 ft · estimated uncertainty ±2 ft
91.398 ft · estimated uncertainty ±1.5 ft
82.5609 ft · estimated uncertainty ±1.5 ft
8.8371 ft · estimated uncertainty ±1.75 ft
Numeric value unresolved
Masonry/frame/clear-width distinction not resolved; do not use visible envelope as clear opening.
Circled mark visible, but exact numerator/denominator/type glyph not reliably read in this bounded review.
Material not established by outline or grille name.
36.2382 ft · estimated uncertainty ±2 ft
5.7735 ft · estimated uncertainty ±2 ft
91.2296 ft · estimated uncertainty ±1.5 ft
82.4233 ft · estimated uncertainty ±1.5 ft
8.8063 ft · estimated uncertainty ±1.75 ft
Numeric value unresolved
Masonry/frame/clear-width distinction not resolved; do not use visible envelope as clear opening.
Circled mark visible, but exact numerator/denominator/type glyph not reliably read in this bounded review.
Material not established by outline or grille name.
49.6044 ft · estimated uncertainty ±2 ft
5.3506 ft · estimated uncertainty ±2 ft
91.5569 ft · estimated uncertainty ±1.5 ft
82.7472 ft · estimated uncertainty ±1.5 ft
8.8097 ft · estimated uncertainty ±1.75 ft
Numeric value unresolved
Masonry/frame/clear-width distinction not resolved; do not use visible envelope as clear opening.
Circled mark visible, but exact numerator/denominator/type glyph not reliably read in this bounded review.