Boundary vertex 2 · north
47.54 ft (trace)47.54 ft · estimated uncertainty ±2.5 ft
Drawing notation: CORRIDOR — Main
Raw-upright master source locator; trace is approximate.
Calculated from: f2-corridor-main-footprint-trace
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)Sheet W4
Extraction: Reviewed · extraction partial. Partial: Second floor plan boundaries, room identities, opening candidates and printed control chains. Second-floor outer trace reused only as a parent of the analytical registration curtain. Reused the provisional level-2 Stair E plan envelope as one input to a cross-floor median diagnostic envelope. W4 Rooms 200–203 boundary and opening gate; no finite room construction authorized. W4 Rooms 200–203 boundary and opening gate; no finite room construction authorized. W4 Rooms 200–203 boundary and opening gate; no finite room construction authorized. W4 Rooms 200–203 boundary and opening gate; no finite room construction authorized. W4 Rooms 200–203 boundary and opening gate; no finite room construction authorized. W4 Rooms 200–203 boundary and opening gate; no finite room construction authorized. W4 Rooms 200–203 boundary and opening gate; no finite room construction authorized. W4 Rooms 200–203 boundary and opening gate; no finite room construction authorized. W4 Rooms 200–203 boundary and opening gate; no finite room construction authorized. W4 Rooms 200–203 boundary and opening gate; no finite room construction authorized. Partial timed visual review: Additive bounded follow-up; coordinates normalized to unrotated access raster. Original plan/topology records retained. No model acceptance or complete-sheet claim. Partial timed visual review: Bounded text-first follow-up; ten sequential inspections total across nine derivatives including one W-6 same-source core crop. No accepted physical geometry. Existing verified readings omitted. IMG_1209 uses prior closeout text only. Partial timed visual review: undefined Partial timed visual review: undefined Partial timed visual review: Source-local partial review; no physical coordinates accepted. Partial timed visual review: undefined Partial timed visual review: undefined Partial timed visual review: Second-floor C upper endpoint, Elevator2 doorway relationship, no inferred ascent to third floor.
Highlighted reading: 47.54 ft (trace). Raw-upright master source locator; trace is approximate.
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Registration: provisional · 3 independent checks · maximum residual 0.469 ft.
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Scroll or pinch to inspect this drawing. The gold outline locates the selected reading. 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.
47.54 ft · estimated uncertainty ±2.5 ft
Drawing notation: CORRIDOR — Main
Raw-upright master source locator; trace is approximate.
Calculated from: f2-corridor-main-footprint-trace