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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.

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Open the coordinated research model →

IMG_1125 · Folder 191

Main Floor Landing

Original sheet identity has not yet been reconciled.

Extraction: Reviewed · extraction partial. Partial timed visual review: Partial locator review: catalogue/OCR searched before sequential inspection of one <=1000px JPEG65 derivative from public/archive/drawings/complete-upright/IMG_1125.webp. Selected visible regions only, not full measured extraction. Coordinates normalized to unrotated access image; principal lettering upright. No modeling 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: OCR and existing text packages searched before one sequential upright WebP inspection. Additive region review; existing verified properties reused, not copied. No accepted geometry or cross-floor connection. Partial timed visual review: undefined Partial timed visual review: undefined Partial timed visual review: Bounded source-local profile/material-note review; no installed instance assignment. Partial timed visual review: undefined Partial timed visual review: undefined Partial timed visual review: Source-local detail/region evidence only. Printed type/floor applicability does not establish installed occurrences.

Unresolved extraction work

locator review only: remaining dimensions, fractions, notes and companion details need targeted extraction
material/finish specifications, installed quantities, revision authority and placement registration
complete image-region coverage and source-to-instance reconciliation
Complete fine dimension chains and classified rough/finish endpoints
Member profiles, fasteners, fabrication details and material-code reconciliation
Historical instance and floor-plan registration
Companion details, revision authority and independent physical connection checks
Fine fractions and full dimension chains remain partially unreviewed
Endpoint classification and companion detail reconciliation
Source-to-building instance registration and accepted connections
Text reuse only; pending source selector empty does not establish complete image extraction.
Complete fine dimensions, profiles, materials, finishes, gauges and fastener schedules remain partial.
Installed quantities, room/storey allocation, governing revision and companion applicability remain unresolved.
Source-to-building transforms, rough/finish endpoint classes, complete openings and independent physical checks remain outstanding; authoring is withheld.
Empty pending selector is not completion; clipping, physical wall-face transfer, profile and installation work remain.
Complete fine profiles, member sizes, fasteners, finish extents and endpoint classes remain partial.
Installed quantities, stair/storey/room assignment, closed openings, headroom, source-to-building registration and independent physical checks remain unresolved.
Governing original/revision and companion applicability remain unresolved; source reading does not approve geometry.
Complete cap/moulding/handrail/string/nosing profiles, materials, gauges, fastener sizes and exact endpoint classes remain partial.
Printed type/floor applicability does not establish installed quantities, storey assignment, source-to-building transforms or accepted physical geometry.
Full region, companion exposure, revision authority and independent installation/profile/height registration remain outstanding; no irrecoverable gap is asserted.
Remaining cap/moulding/handrail/string/nosing fractions, gauges, fastener material/size/anchorage, finish extents and source endpoint classes.
Installed storey/room quantities, closed openings and landing boundaries, rail clear width, headroom, source-to-building transforms and independent physical checks.
Companion/revision authority remains open; no source or floor completeness or irrecoverable gap asserted.
Remaining fine fractions, complete member profiles, fastener sizes/materials and finish extents require targeted source review.
Installed room/floor identity, exact rough/finish/cab/rail endpoints and companion registration remain unresolved.
Source-to-building transform, installed quantities, independent physical connections and architectural acceptance remain withheld.
Left two-riser section and right elevation are clipped; the general type is not a measured floor plan.
Complete member/profile dimensions, material/gauge/fastener schedules and exact endpoint classes
Installed stair/storey/room allocation, quantities, original/revision authority and companion applicability
Source-to-building registration, complete landing/shaft openings, independent physical checks and architectural acceptance

Download OCR observations (unverified)

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Scroll or pinch to inspect this drawing. Archival drawing photograph · Oregon Historical Society research collections.

Open source image separately ↗

15 matching properties

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.

parallel-img1125-landingverified · printed

assignment

TYPICAL DETAIL AT ALL MAIN FLOOR LANDINGS

Selected visible source evidence; partial locator review, applies only to depicted assembly.

IMG_1125 · Locate on drawing ↗

Drawing notation: TYPICAL DETAIL AT ALL MAIN FLOOR LANDINGS

Selected visible source evidence; partial locator review, applies only to depicted assembly.

parallel-img1125-landingverified · printed

safety_tread_width

SAFETY TREAD 4" WIDE

4 in

Selected visible source evidence; partial locator review, applies only to depicted assembly.

IMG_1125 · Locate on drawing ↗

Drawing notation: SAFETY TREAD 4" WIDE

Selected visible source evidence; partial locator review, applies only to depicted assembly.

parallel-img1125-landingverified · printed

safety_tread_extent

TO EXTEND FULL LENGTH OF LAST RISER

Selected visible source evidence; partial locator review, applies only to depicted assembly.

IMG_1125 · Locate on drawing ↗

Drawing notation: TO EXTEND FULL LENGTH OF LAST RISER

Selected visible source evidence; partial locator review, applies only to depicted assembly.

parallel-img1125-landingverified · printed

newel_width

4" NEWEL

4 in

Selected visible source evidence; partial locator review, applies only to depicted assembly.

IMG_1125 · Locate on drawing ↗

Drawing notation: 4" NEWEL

Selected visible source evidence; partial locator review, applies only to depicted assembly.

parallel-img1125-landingverified · printed

approximate_tread_depth

1 TREAD APPROX. 10 1/2"

10.5 in

Printed approximate dimension, not an exact stair run.

IMG_1125 · Locate on drawing ↗

Drawing notation: 1 TREAD APPROX. 10 1/2"

Printed approximate dimension, not an exact stair run.

parallel-img1125-landingverified · printed

steel_plate_thickness

1/4" THICK STEEL PLATE LANDING

0.25 in

Selected visible source evidence; partial locator review, applies only to depicted assembly.

IMG_1125 · Locate on drawing ↗

Drawing notation: 1/4" THICK STEEL PLATE LANDING

Selected visible source evidence; partial locator review, applies only to depicted assembly.

parallel-img1125-landingverified · printed

support_channel_depth

10" CHANNEL

10 in

Selected visible source evidence; partial locator review, applies only to depicted assembly.

IMG_1125 · Locate on drawing ↗

Drawing notation: 10" CHANNEL

Selected visible source evidence; partial locator review, applies only to depicted assembly.

parallel-img1125-landingverified · printed

support_material

STEEL PLATE

Selected visible source evidence; partial locator review, applies only to depicted assembly.

IMG_1125 · Locate on drawing ↗

Drawing notation: STEEL PLATE

Selected visible source evidence; partial locator review, applies only to depicted assembly.

detail-img1125-two-riser-landing-baseverified · printed

left_wall_offset_fraction

0.75 in

Left fraction of paired chain near finish-wall line; unit convention inches. Endpoint identity unresolved; preserve prior unresolved combined record.

IMG_1125 · W-228 · Locate on drawing ↗

Drawing notation: ¾

Left fraction of paired chain near finish-wall line; unit convention inches. Endpoint identity unresolved; preserve prior unresolved combined record.

detail-img1125-two-riser-landing-baseverified · printed

right_wall_offset_fraction

0.75 in

Right fraction separately recorded. Do not sum into accepted wall thickness; exact witnesses still require master crop.

IMG_1125 · W-228 · Locate on drawing ↗

Drawing notation: ¾

Right fraction separately recorded. Do not sum into accepted wall thickness; exact witnesses still require master crop.

detail-img1125-two-riser-landing-baseverified · printed

base_height_above_landing

5 in

Vertical dimension from landing plate top to top of projected wall string in local section; no storey assignment.

IMG_1125 · W-228 · Locate on drawing ↗

Drawing notation: 5"

Vertical dimension from landing plate top to top of projected wall string in local section; no storey assignment.

detail-img1125-two-riser-landing-baseverified · printed

approximate_riser_height

APPROX. 7"

7 in

Approximate upper-to-lower landing tread height in two-riser section; do not use as exact riser or Stair E reconciliation.

IMG_1125 · W-228 · Locate on drawing ↗

Drawing notation: APPROX. 7"

Approximate upper-to-lower landing tread height in two-riser section; do not use as exact riser or Stair E reconciliation.

detail-img1125-two-riser-landing-baseverified · observed

wall_string_landing_plate_underside_interface

[landing plate meets vertical wall string; rounded underside seating/fillet contour drawn at junction]

Upright view of raw-master crop shows drawn underside junction of landing plate and vertical wall string. No weld/bolt/rivet process, fastener count, radius, thickness or wall anchorage is specified by contour alone.

IMG_1125 · W-228 · Locate on drawing ↗

Drawing notation: [landing plate meets vertical wall string; rounded underside seating/fillet contour drawn at junction]

Calculated from: detail-20261011j-1125-m001, detail-20261011j-1125-m002, detail-cores-20261011c-1125-m001

parallel-img1125-landingverified · observed

approximate_tread_witness_endpoint_class

1 TREAD APPROX. 10½" / ℄ OF NEWEL POST

Approximate tread span uses two vertical newel-post reference lines, one explicitly labelled centreline. It does not establish an exact finished tread run or a room coordinate.

IMG_1125 · W-228 · Locate on drawing ↗

Drawing notation: 1 TREAD APPROX. 10½" / ℄ OF NEWEL POST

Approximate tread span uses two vertical newel-post reference lines, one explicitly labelled centreline. It does not establish an exact finished tread run or a room coordinate.

Calculated from: parallel-img1125-m005

detail-img1125-two-riser-landing-baseverified · observed

wall_string_finish_rough_reference_relationship

FINISH WALL LINE / ROUGH WALL LINE

Finish wall and rough wall are separately led to thin applied layer and hatched backing. The two¾-inch witnesses are retained as source-local offsets; no accepted wall thickness or material inferred.

IMG_1125 · W-228 · Locate on drawing ↗

Drawing notation: FINISH WALL LINE / ROUGH WALL LINE

Calculated from: detail-20261011j-1125-m001, detail-20261011j-1125-m002

View all source photographs →