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: beam W401 court 47 48
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.
Explicit steel-elevation convention and drawn rolled-metal profiles; grade is not stated.
Drawing notation: 15″ I @ 42.9 −5″
Explicit steel-elevation convention and drawn rolled-metal profiles; grade is not stated.
Drawing notation: 15″ I @ 42.9 −5″
15 in
Drawing notation: 15″ I @ 42.9 −5″
42.9 lb/ft
Numeric mark following @ is read directly; pounds per foot is the conventional interpretation of historic rolled-beam notation, not an explicitly printed unit in the inspected region.
Drawing notation: 15″ I @ 42.9 −5″
Numeric mark following @ is read directly; pounds per foot is the conventional interpretation of historic rolled-beam notation, not an explicitly printed unit in the inspected region.
20 ft
Distance between named support axes, not physical cut length or clear span.
Drawing notation: 20′0″
Distance between named support axes, not physical cut length or clear span.
-5 in
Drawing notation: 15″ I @ 42.9 −5″
113.833333 ft
Applies to this member's printed steel tag only; not a slab elevation.
Drawing notation: 15″ I @ 42.9 −5″
Applies to this member's printed steel tag only; not a slab elevation.
Calculated from: beam-W401-court-47-48-top-steel-offset, frame-second-floor-finish
Numeric value unresolved
Drawing notation: 15″ I @ 42.9 −5″
Drawing notation: 15″ I @ 42.9 −5″
Source inventory is separate from the floor filters above. Select one drawing to inspect it; no drawing set is preloaded.