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: Typical roof slab source 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.
Caption identifies a generic detail; does not identify a particular W11 roof field.
Drawing notation: TYPICAL ROOF SLAB
3 in
Center vertical witness appears to read 3 inches; numeral and exact endpoints require independent review. Not a verified slab thickness and not a complete roofing build-up.
Drawing notation: 3″ [candidate reading]
Numeric value unresolved
No complete layer chain established by this crop. W11 COMPOSITION ROOF remains a separate field material note.
Drawing notation: TYPICAL ROOF SLAB
No accepted field-specific callout or world registration; no placement or underside elevation follows from candidate section readings.
Drawing notation: TYPICAL ROOF SLAB
3 in
Center vertical witness between top and underside horizontal slab lines in TYPICAL ROOF SLAB. Exact same source slab-thickness witness as prior candidate; no roof field assignment or roof covering thickness.
Drawing notation: 3″
Center vertical witness between top and underside horizontal slab lines in TYPICAL ROOF SLAB. Exact same source slab-thickness witness as prior candidate; no roof field assignment or roof covering thickness.
Source inventory is separate from the floor filters above. Select one drawing to inspect it; no drawing set is preloaded.