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: Stair H basement flight and landing
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.
21 count
Total directional count printed in basement flight; does not resolve individual riser heights or count per flight.
Drawing notation: UP 21 RISERS
Total directional count printed in basement flight; does not resolve individual riser heights or count per flight.
Basement stair-hall label only; substrate, thickness and finish extent missing.
Drawing notation: CEMENT FLOOR
Basement stair-hall label only; substrate, thickness and finish extent missing.
144 in
Top horizontal plan dimension spanning vicinity of Column 46 and Column 53; precise endpoints and structural-center versus wall-face class require review.
Drawing notation: 12'-0"
Top horizontal plan dimension spanning vicinity of Column 46 and Column 53; precise endpoints and structural-center versus wall-face class require review.
Source inventory is separate from the floor filters above. Select one drawing to inspect it; no drawing set is preloaded.