Original WTC7 · source comparison
Floor-by-floor reconstruction audit
47 floors and the roof. The latest pass adds six Floor4 side beams and reconciles nine larger reference-span mismatches against the original drawings. The preceding tier audit corrected 31 section assignments after 105 native west-core readings. Every level still has open reconstruction work.
Choose a level to compare modeled worklines with its original erection plan and see the next source task.
General top of steel
Slab reference
Floor-attributed records
Repeated office records
Current modeled worklines
Amber: repeated design / office spans · blue: core primary · purple: transfer · green: built-up · red rings: omitted existing supports.
North at top. Slab−4ft to slab+0.1ft, plus floor-attributed local beams. Hover a line for its member ID. This band is a review aid; raised steel and deep girders may need adjacent levels.
![Original erection-plan overview]()
Click to enlarge the source overview. Drawings may show two floors or redirect to a local part plan; use the floor labels.
West-core source checks
These three span checks establish section designation and connected column pair. They do not certify the rest of the floor, fabricated ends or local flange cuts.
| Span | Before audit | Source / current | Result |
|---|
Open native source crop ↗
All levels