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)Object: Three-way armored-wire-glass expansion-joint detail
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.
Arrow at upper right of Construction No.14 detail; alloy and coating thickness unresolved.
Drawing notation: CAST IRON GLASS SHIELD-GALVANIZED
Arrow at upper right of Construction No.14 detail; alloy and coating thickness unresolved.
Printed compound callout retained literally; no modern composition inferred. Review correction review-correction-20261013p-metal1012h-img1084-joint-compound: Same original Construction No.14 compound leader reads TAR AND SULPHUR COMPOUND. The source glyphs SULPHUR are visible in the targeted raw crop; VOLATILE is a prior transcription error, not a historical alternate or revision.
Drawing notation: TAR AND VOLATILE COMPOUND
Printed compound callout retained literally; no modern composition inferred.
Upper-right crop directly reads fabrication note. OZ designation kept as printed specification; thickness and mass-per-area basis not converted.
Drawing notation: 16 OZ. COLD ROLLED COPPER STRIP. BOND STRIP UNDER ALL JOINTS IN ROOF LIGHTS, SOLDERED AT JOINT WHERE THEY JOIN.
Upper-right crop directly reads fabrication note. OZ designation kept as printed specification; thickness and mass-per-area basis not converted.
16 oz
Specification designation only; area basis, gauge and physical thickness unresolved.
Drawing notation: 16 OZ.
Specification designation only; area basis, gauge and physical thickness unresolved.
Numeric value unresolved
Rod material label readable; fractional rod diameter and separate span applicability remain uncertain. No numerical rod size promoted.
Drawing notation: DEFORMED STEEL RODS [small size/span tokens unresolved]
Rod material label readable; fractional rod diameter and separate span applicability remain uncertain. No numerical rod size promoted.
Printed source-local type/component or section control only; no accepted physical geometry, installed quantity or world registration. Original layer retained separately from revisions. Same original Construction No.14 glass-shield compound leader; enlarged raw crop reads SULPHUR.
Drawing notation: TAR AND SULPHUR COMPOUND
Printed source-local type/component or section control only; no accepted physical geometry, installed quantity or world registration. Original layer retained separately from revisions. Same original Construction No.14 glass-shield compound leader; enlarged raw crop reads SULPHUR.
0.375 fractional-size-designation
Printed source-local type/component or section control only; no accepted physical geometry, installed quantity or world registration. Original layer retained separately from revisions. Printed deformed steel rod-size designation for long spans; no explicit inch/diameter marker established in this crop.
Drawing notation: ⅜ LONG SPANS
Printed source-local type/component or section control only; no accepted physical geometry, installed quantity or world registration. Original layer retained separately from revisions. Printed deformed steel rod-size designation for long spans; no explicit inch/diameter marker established in this crop.
0.25 fractional-size-designation
Printed source-local type/component or section control only; no accepted physical geometry, installed quantity or world registration. Original layer retained separately from revisions. Separate short-span rod-size designation, not actual diameter or installed reinforcement.
Drawing notation: ¼ SHORT SPANS
Printed source-local type/component or section control only; no accepted physical geometry, installed quantity or world registration. Original layer retained separately from revisions. Separate short-span rod-size designation, not actual diameter or installed reinforcement.
9.625 unlabeled-dimension-token
Printed source-local type/component or section control only; no accepted physical geometry, installed quantity or world registration. Original layer retained separately from revisions. Printed spacing token between shield center witness lines; inch unit not explicitly verified, so no converted physical length.
Drawing notation: 9⅝ ON CENTRES
Printed source-local type/component or section control only; no accepted physical geometry, installed quantity or world registration. Original layer retained separately from revisions. Printed spacing token between shield center witness lines; inch unit not explicitly verified, so no converted physical length.
3.375 unlabeled-dimension-token
Printed source-local type/component or section control only; no accepted physical geometry, installed quantity or world registration. Original layer retained separately from revisions. Separate right-side vertical construction token. Units/precise concrete face class remain unconfirmed.
Drawing notation: 3⅜
Printed source-local type/component or section control only; no accepted physical geometry, installed quantity or world registration. Original layer retained separately from revisions. Separate right-side vertical construction token. Units/precise concrete face class remain unconfirmed.
Source inventory is separate from the floor filters above. Select one drawing to inspect it; no drawing set is preloaded.