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 W226
Extraction: Reviewed · extraction partial. Text-first review followed by one complete source photograph and sequential crops from the same photograph. Reviewed the sheet identity, Section A-A, eighth-, seventh-, typical second-through-sixth-, first- and basement-floor plans, printed riser counts, regional floor elevations, the printed second-floor-only dotted-line exception, and major material/finish callouts. Companion/close-up photographs IMG_1119 and IMG_1120 were identified but not opened. Reused the verified W226 Stair E upper-story extraction and one targeted typical-plan crop to test the printed run, ten-riser-per-flight numbering, second-floor-only dotted-line exception and regional sixth/seventh/eighth-floor datums against registered plan envelopes. Stair E fourth-to-fifth physical flight/landing/shaft gate; no solid authorized. Stair E fourth-to-fifth physical flight/landing/shaft gate; no solid authorized. Stair E fourth-to-fifth physical flight/landing/shaft gate; no solid authorized. Stair E fourth-to-fifth physical flight/landing/shaft gate; no solid authorized. Stair E fourth-to-fifth physical flight/landing/shaft gate; no solid authorized. Stair E fourth-to-fifth physical flight/landing/shaft gate; no solid authorized. Partial timed visual review: OCR, queue and existing extraction packages searched first. One sequential upright WebP inspection; only additive selected properties recorded. Previously verified readings reused without duplication. No complete extraction or accepted geometry. Partial timed visual review: Text/OCR, review-queue and prior-package audit; prior verified readings reused without duplication. No accepted geometry or building connections. Partial timed visual review: Text reuse only: prior verified evidence retained without duplication; no new visual review or completeness claim. Partial timed visual review: Selected construction and reference-face review only; source evidence does not authorize physical geometry. Partial timed visual review: undefined Partial timed visual review: Text reuse only. Accepted W226-to-building transform requires checked non-collinear registration and held-out residuals; glyph inspection cannot close it. UP20/DOWN22 and regional datum conflicts remain open. Partial timed visual review: Text-only canonical/queue/OCR reuse; no new image inspection. Partial timed visual review: undefined Partial timed visual review: undefined
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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.
Title and drawing number read from IMG_1118.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
0.5 in-per-ft
Printed in the title block.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
W225 documents lower-story Stair E conditions and remains a separate extraction.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
W228 is required before authoring tread, riser, nosing, railing and connection profiles.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
93.25 ft-drawing-datum
Original drawing datum printed in the first-floor plan.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
160.25 ft-drawing-datum
Regional Stair E datum in Section A-A.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
173.25 ft-drawing-datum
Regional Stair E datum in Section A-A. Preserve separately from 171.75 exterior/Main and 173.75 schedule/Madison controls.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
185.25 ft-drawing-datum
Regional Stair E datum in Section A-A.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
13 ft
Calculated as 173.25 - 160.25 from two printed W226 regional datums.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
12 ft
Calculated as 185.25 - 173.25 from two printed W226 regional datums.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
22 count
Printed on the basement plan; the two visible runs are numbered through 22.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
22 count
Printed on the first-floor plan.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
36 count
Printed on the first-floor plan. Intermediate landing decomposition and full run geometry are not yet accepted.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
20 count
Printed on the plan captioned for floors 2 through 6; floor-specific conditions and the sixth-to-seventh conflict remain unresolved.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
20 count
Printed on the plan captioned for floors 2 through 6; at the sixth floor it conflicts with the seventh-floor DOWN 22 RISERS note.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
22 count
Printed on the seventh-floor plan; conflicts with the typical sixth-floor UP 20 RISERS note.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
20 count
Printed on the seventh-floor plan.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
7.875 ft
Printed along the repeated run in the typical upper-story plan. It is not used to infer a tread going until run endpoints and the applicable riser/tread decomposition are reconciled with W228.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
Printed across the typical second-through-sixth-floor plan. The note limits the dotted overlay to the second floor; exact affected edges remain to be transcribed before physical authoring.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
Repeated plan/section callout; member sizes and supports unresolved.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
Repeated Section A-A callout; W228 dependency retained.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
Section A-A construction-class callout; exact profiles unresolved.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
Repeated upper-story floor-line callout.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
Repeated Section A-A finish callouts.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
Both statements are printed on W226. Neither is discarded or averaged; physical sixth-to-seventh flight geometry remains withheld.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
Three source-backed seventh-floor controls are retained as regional/conflicting evidence pending section-to-plan boundary registration.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
No non-collinear source-to-plan control set has passed overlay and held-out residual checks.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
The sixth-to-seventh riser-count conflict, missing W228 construction reconciliation and missing source-to-building transform prevent physical authoring.
Drawing notation: DETAILS OF STAIR E / UPPER STORIES / W226
One complete source and sequential crops from the same photograph were inspected. Pixel distances were not used as architectural dimensions.
4 ft
Fits two display flights and a 1.16-foot center gap inside the median envelope. It is not a printed or accepted clear stair width.
Drawing notation: 2ND, 3RD, 4TH, 5TH & 6TH FLOOR PLANS
4 ft
Display fit only. The remaining north landing depth is 4.782 feet after the printed 7.875-foot run; neither landing depth is accepted.
Drawing notation: 2ND, 3RD, 4TH, 5TH & 6TH FLOOR PLANS
0.875 ft
The typical plan numbers ten risers per flight; nine tread goings close the printed 7-foot-10.5-inch run exactly. This supports diagnostic stations only, not fabrication geometry.
Drawing notation: 2ND, 3RD, 4TH, 5TH & 6TH FLOOR PLANS / 7TH FLOOR PLAN / 7'-10 1/2" / DOWN 20 RISERS / UP 20 RISERS / DOWN 22 RISERS / UP 20 RISERS
Upper-story plan and datum controls; no metric X/Z transform is accepted.
Drawing notation: TYPICAL SECTION OF LANDINGS WHERE TWO RISERS OCCUR / ELEVATION WHERE TWO RISERS OCCUR IN LANDING
Candidate two-riser landing construction only; storey applicability is not printed.
Calculated from: w226-typical-run-dimension, w226-typical-up-riser-count
67 ft
W226 regional Stair E datum converted to the project first-floor local datum.
Drawing notation: 2ND, 3RD, 4TH, 5TH & 6TH FLOOR PLANS / 7TH FLOOR PLAN / 7'-10 1/2" / DOWN 20 RISERS / UP 20 RISERS / DOWN 22 RISERS / UP 20 RISERS
Upper-story plan and datum controls; no metric X/Z transform is accepted.
Drawing notation: TYPICAL SECTION OF LANDINGS WHERE TWO RISERS OCCUR / ELEVATION WHERE TWO RISERS OCCUR IN LANDING
Candidate two-riser landing construction only; storey applicability is not printed.
Calculated from: w226-sixth-floor-finish-elevation, w226-first-floor-finish-elevation
80 ft
Regional Stair E datum; 1.5 feet above the current generic Main/sixth-elevation level-7 plane and 0.5 feet below the Madison regional reference.
Drawing notation: 2ND, 3RD, 4TH, 5TH & 6TH FLOOR PLANS / 7TH FLOOR PLAN / 7'-10 1/2" / DOWN 20 RISERS / UP 20 RISERS / DOWN 22 RISERS / UP 20 RISERS
Upper-story plan and datum controls; no metric X/Z transform is accepted.
Drawing notation: TYPICAL SECTION OF LANDINGS WHERE TWO RISERS OCCUR / ELEVATION WHERE TWO RISERS OCCUR IN LANDING
Candidate two-riser landing construction only; storey applicability is not printed.
Calculated from: w226-seventh-floor-finish-elevation, w226-first-floor-finish-elevation
92 ft
W226 regional Stair E datum converted to the project first-floor local datum.
Drawing notation: 2ND, 3RD, 4TH, 5TH & 6TH FLOOR PLANS / 7TH FLOOR PLAN / 7'-10 1/2" / DOWN 20 RISERS / UP 20 RISERS / DOWN 22 RISERS / UP 20 RISERS
Upper-story plan and datum controls; no metric X/Z transform is accepted.
Drawing notation: TYPICAL SECTION OF LANDINGS WHERE TWO RISERS OCCUR / ELEVATION WHERE TWO RISERS OCCUR IN LANDING
Candidate two-riser landing construction only; storey applicability is not printed.
Calculated from: w226-eighth-floor-finish-elevation, w226-first-floor-finish-elevation
0.575 ft
Each current project reference interval from levels 2 through 6 is 11.5 feet. W226 prints 20 risers; the result is used only for analytical surfaces.
Drawing notation: 2ND, 3RD, 4TH, 5TH & 6TH FLOOR PLANS / 7TH FLOOR PLAN / 7'-10 1/2" / DOWN 20 RISERS / UP 20 RISERS / DOWN 22 RISERS / UP 20 RISERS
Upper-story plan and datum controls; no metric X/Z transform is accepted.
Drawing notation: TYPICAL SECTION OF LANDINGS WHERE TWO RISERS OCCUR / ELEVATION WHERE TWO RISERS OCCUR IN LANDING
Candidate two-riser landing construction only; storey applicability is not printed.
Calculated from: w226-typical-up-riser-count, frame-second-floor-finish, env-sixth-F3-level, env-sixth-F4-level, env-sixth-F5-level, frame-sixth-floor-finish
0.590909 ft
Uses the 22-riser seventh-floor down count. The sixth-floor up-20 count is retained as the ordinary-flight count; W228's two-riser landing is a candidate reconciliation only.
Drawing notation: 2ND, 3RD, 4TH, 5TH & 6TH FLOOR PLANS / 7TH FLOOR PLAN / 7'-10 1/2" / DOWN 20 RISERS / UP 20 RISERS / DOWN 22 RISERS / UP 20 RISERS
Upper-story plan and datum controls; no metric X/Z transform is accepted.
Drawing notation: TYPICAL SECTION OF LANDINGS WHERE TWO RISERS OCCUR / ELEVATION WHERE TWO RISERS OCCUR IN LANDING
Candidate two-riser landing construction only; storey applicability is not printed.
Calculated from: w226-f6-f7-vertical-interval, w226-seventh-down-riser-count
0.6 ft
Calculated from W226 printed regional datums and printed 20-riser count; physical profiles and placement remain unresolved.
Drawing notation: 2ND, 3RD, 4TH, 5TH & 6TH FLOOR PLANS / 7TH FLOOR PLAN / 7'-10 1/2" / DOWN 20 RISERS / UP 20 RISERS / DOWN 22 RISERS / UP 20 RISERS
Upper-story plan and datum controls; no metric X/Z transform is accepted.
Drawing notation: TYPICAL SECTION OF LANDINGS WHERE TWO RISERS OCCUR / ELEVATION WHERE TWO RISERS OCCUR IN LANDING
Candidate two-riser landing construction only; storey applicability is not printed.
Calculated from: w226-f7-f8-vertical-interval, w226-seventh-up-riser-count
20 count
verified source-local. Candidate only; no accepted physical flight, landing, shaft or floor cut.
Drawing notation: UP 20 RISERS / DOWN 20 RISERS
verified source-local; reused evidence: reused stair-e-w226-upper-stories-first.json and stair-e-upper-diagnostic-placement.json; no image reopened
Calculated from: w226-typical-up-riser-count, w226-typical-down-riser-count
7.875 ft
verified source-local; precise extension witness not classified. Candidate only; no accepted physical flight, landing, shaft or floor cut.
Drawing notation: 7′10½″
verified source-local; precise extension witness not classified; reused evidence: reused stair-e-w226-upper-stories-first.json and stair-e-upper-diagnostic-placement.json; no image reopened
Calculated from: w226-typical-run-dimension
6.9 in
diagnostic only; individual printed rise not checked. Candidate only; no accepted physical flight, landing, shaft or floor cut.
Drawing notation: 11′6″ / 20
diagnostic only; individual printed rise not checked; reused evidence: reused stair-e-w226-upper-stories-first.json and stair-e-upper-diagnostic-placement.json; no image reopened
Calculated from: gate-e-f4-f5-riser-count, gate-e-f4-f5-storey-rise