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 number unresolved
Extraction: Reviewed · extraction partial. Sheet title; Section C-C; Main entrance HALF PLAN; Bronze rail note and pier fixture Partial timed visual review: Source-local photographed design detail; no installed quantity, accepted geometry or world placement authorized. Partial timed visual review: Source-local photographed drawing evidence only; stacked marks are interpreted as drawing references, not historical entrance identifiers. No installed quantities or accepted geometry. Partial timed visual review: Main Section C-C step material and companion reference. Known count/run/slab/elevations reused; no step profile inferred from symbolic sawtooth. Partial timed visual review: Section C-C and upper HALF PLAN. Raw pixel content upright despite EXIF 6. Stair count/run/datum values reused; additional slab evidence distinct from tread/riser profile. Partial timed visual review: Half-plan local source dimensions. Raw encoded pixels read upright at zero rotation despite parent EXIF 6; EXIF is not used as reading transform.
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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.
24.916667 ft
Drawing notation: 23 TREADS @ 1'-1" = 24'-11"
Dimension line spans the tread run in Section C-C.
1.083333 ft
Drawing notation: 23 TREADS @ 1'-1" = 24'-11"
Calculated from: main-north-steps-run, main-north-steps-tread-count
23 count
Drawing notation: 23 TREADS @ 1'-1" = 24'-11"
Numeric value unresolved
Drawing notation: 23 TREADS
No separate printed riser count is securely legible. It is not inferred from tread count or graphic step lines.
Numeric value unresolved
Drawing notation: NOTE: FOR DETAIL OF STEPS SEE SHEET [number uncertain]
No printed riser height is securely legible in the selected region. The separate step-detail sheet was not opened.
83.26 ft
Drawing notation: EL. 83.26
Leader lands at the lower sidewalk/first-step surface in Section C-C; the same value is printed at the entrance centerline in the half plan.
93.24 ft
Drawing notation: ELEV. 93.24
Printed on the upper landing surface in Section C-C. This is 0.01 ft below the 93.25 first-floor datum on IMG_1245 and is retained separately.
Conflicting readings: site-main-first-floor-datum
9.98 ft
This is a difference of two printed decimal elevations, not a directly printed feet-inch rise and not a basis for deriving riser count.
Drawing notation: 23 TREADS @ 1'-1" = 24'-11"; ELEV. 83.26; ELEV. 93.24; 32'-6"; CENTER LINE OF ENTRANCE; HALF PLAN; SECTION C-C
Calculated from: main-north-steps-upper-elevation, main-north-steps-lower-elevation
32.5 ft
Drawing notation: 32'-6"; CENTER LINE OF ENTRANCE; HALF PLAN
Dimension runs from the entrance centerline to the outer stair/parapet boundary on the drawn half.
65 ft
Calculated only because the drawing explicitly labels a HALF PLAN about CENTER LINE OF ENTRANCE. IMG_1245 independently prints two adjacent 32'-6" central segments. This value remains a design-plan width, not a surveyed as-built width.
Drawing notation: 23 TREADS @ 1'-1" = 24'-11"; ELEV. 83.26; ELEV. 93.24; 32'-6"; CENTER LINE OF ENTRANCE; HALF PLAN; SECTION C-C
Calculated from: main-north-steps-half-width
4 ft
Drawing notation: 4'-0"
Section C-C dimension immediately beyond the 24'-11" tread run, from the top tread/run endpoint to the rear landing reference.
Numeric value unresolved
Drawing notation: EL. 83.26
Lower sidewalk/landing surface is drawn, but no dedicated landing-depth dimension has secure endpoints in the selected view.
13.083333 ft
Drawing notation: 13'-1"
Horizontal Section C-C control from the page-left parapet termination/reference to the pier face. Do not merge with the 13'-0" front-elevation width on IMG_1245; endpoints differ or require reconciliation.
92.76 ft
Drawing notation: ELEV. 92.76
Printed on the horizontal parapet/coping line page-left of the pier in Section C-C.
17.5 ft
Printed numeric value retained; endpoint interpretation remains pending.
Drawing notation: 17'-6"
Plan control over the upper parapet/landing assembly. It corroborates but does not yet replace the IMG_1245 profile control of the same value.
13 ft
Printed numeric value retained; endpoint interpretation remains pending.
Drawing notation: 13'-0"
Vertical plan control along the stair-side return. It corroborates but does not yet replace the 13'-0" front-elevation width on IMG_1245 because the precise face endpoints still need registration.
10.833333 ft
Printed numeric value retained; endpoint interpretation remains pending.
Drawing notation: 10'-10"
Plan control between the stair/parapet return and the page-right wall reference. It corroborates the IMG_1245 profile value, but the world endpoint remains unresolved.
Drawing notation: BRONZE RAIL / SEE DETAIL SH. 213
Numeric value unresolved
Drawing notation: BRONZE RAIL / SEE DETAIL SH. 213
Rail is drawn but no secure height dimension is assigned on the selected view.
Numeric value unresolved
Drawing notation: BRONZE RAIL
Graphic post marks are not promoted to an exact count; the referenced detail sheet remains unreviewed.
IMG_1244's step-detail sheet number remains ambiguous. W-213 resolves the rail detail only and points Sheet 201 to location/arrangement, not to the missing tread/riser/nosing fabrication profile.
Drawing notation: NOTE: FOR DETAIL OF STEPS SEE SHEET [number uncertain]
W-213 local fabrication evidence only; no project rail layout or world insertion is established.
204 sheet-number
Native Section C-C crop clearly prints 204. This is a step-detail cross-reference, separate from SEE DETAIL SH. 213 for bronze rail. It does not import dimensions from a companion that has not been examined for this task or establish which W204 photographed region supplies the tread/nosing profile.
Drawing notation: NOTE: FOR DETAIL OF STEPS / SEE SHEET 204
Native Section C-C crop clearly prints 204. This is a step-detail cross-reference, separate from SEE DETAIL SH. 213 for bronze rail. It does not import dimensions from a companion that has not been examined for this task or establish which W204 photographed region supplies the tread/nosing profile.
STONE leader in Section C-C reaches the lower step zone. Stone classification only; species, quarry, surface finish, tread thickness, riser/nosing geometry, coatings and installed condition remain unresolved. Not copied to the six-inch concrete/structural approach slab or all building stairs.
Drawing notation: STONE
STONE leader in Section C-C reaches the lower step zone. Stone classification only; species, quarry, surface finish, tread thickness, riser/nosing geometry, coatings and installed condition remain unresolved. Not copied to the six-inch concrete/structural approach slab or all building stairs.
6 in
Slab below lower approach/first steps, adjoining the indicated VAULT. Not riser height, tread thickness, or a universal stair slab section.
Drawing notation: 6" SLAB
Slab below lower approach/first steps, adjoining the indicated VAULT. Not riser height, tread thickness, or a universal stair slab section.
Numeric value unresolved
Number remains unverified in this crop. No automatic resolution to 213 or invented fabrication dimensions.
Drawing notation: NOTE: FOR DETAIL OF STEPS SEE SHEET [2?4; middle digit uncertain]
Number remains unverified in this crop. No automatic resolution to 213 or invented fabrication dimensions.
Short pier-mounted object is contract-excluded in this section. Shape alone does not establish an electric lamp, either Main flagpole, or the interior CEILING LIGHTS assembly on W105.
Drawing notation: NOT IN CONTRACT
Short pier-mounted object is contract-excluded in this section. Shape alone does not establish an electric lamp, either Main flagpole, or the interior CEILING LIGHTS assembly on W105.
17.5 ft
Confirms only the printed 17-foot-6-inch plan control above the upper parapet segment. Same witness as prior main-north-entrance-parapet-plan-control-17-6. Precise boundary classification, endpoint interpretation, world registration and installed applicability remain unresolved.
Drawing notation: 17'-6"
Confirms only the printed 17-foot-6-inch plan control above the upper parapet segment. Same witness as prior main-north-entrance-parapet-plan-control-17-6. Precise boundary classification, endpoint interpretation, world registration and installed applicability remain unresolved.
13 ft
Confirms only the printed 13-foot plan control beside the right return in the half plan. Same witness as prior main-north-entrance-parapet-plan-control-13-0. Does not classify clear width, wall face or world endpoints.
Drawing notation: 13'-0"
Confirms only the printed 13-foot plan control beside the right return in the half plan. Same witness as prior main-north-entrance-parapet-plan-control-13-0. Does not classify clear width, wall face or world endpoints.
10.833333 ft
Confirms only the printed 10-foot-10-inch control between the return area and page-right wall strip. Same witness as prior main-north-entrance-parapet-plan-control-10-10. Physical endpoint interpretation, clear-space classification and world registration remain unresolved.
Drawing notation: 10'-10"
Confirms only the printed 10-foot-10-inch control between the return area and page-right wall strip. Same witness as prior main-north-entrance-parapet-plan-control-10-10. Physical endpoint interpretation, clear-space classification and world registration remain unresolved.
4 ft
Source-local horizontal 4-foot control across the page-right return on the same chain immediately left of the 10-foot-10-inch control. It is not a railing dimension, stair clear width, material thickness or accepted world span.
Drawing notation: 4'-0"
Source-local horizontal 4-foot control across the page-right return on the same chain immediately left of the 10-foot-10-inch control. It is not a railing dimension, stair clear width, material thickness or accepted world span.
4 ft
Source-local vertical 4-foot dimension across the transverse arm containing the circular hole, to the right of that circle. Separate witness from the right-return horizontal 4-foot control. No clear opening, finish boundary, installed size or material assignment is inferred.
Drawing notation: 4'-0"
Source-local vertical 4-foot dimension across the transverse arm containing the circular hole, to the right of that circle. Separate witness from the right-return horizontal 4-foot control. No clear opening, finish boundary, installed size or material assignment is inferred.
3 ft
Literal 3-foot diameter label inside the circular hole in the transverse parapet arm of the half plan; visible prime after 3 establishes feet. Does not identify function, drainage, flagpole base, pier fixture, depth, installed count, stone species or world location.
Drawing notation: 3' DIA. HOLE
Literal 3-foot diameter label inside the circular hole in the transverse parapet arm of the half plan; visible prime after 3 establishes feet. Does not identify function, drainage, flagpole base, pier fixture, depth, installed count, stone species or world location.