# WTC7 floor-by-floor audit This pass inventories all 47 floors and the roof, compares lower/special-level erection plans with the integrated model, and independently reads three west-core spans on each of 35 typical-range floors. It is a bounded audit, not a claim that every member on every floor has been checked. No floor is certified complete. **Latest lower-floor pass:** Six additional Floor4 beams: G313/C313 oblique crosspieces and H289/B312/C312/B328 inner-west-strip steel. Nine larger side-span mismatches are reconciled against native sources; H276 uses the corrected W12×19 section. The side package now contains61 members. Connections, field alterations and remaining shaft/floor framing are still incomplete. See [the Floor4 side audit](floor4-side-framing-audit.md). **Earlier tier corrections:** 31 wrong section assignments corrected across 15 floors after 105 native readings on 19 erection sheets. C58–61 and C59–62 were under-sized on Floors 9, 11, 17, 19, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45. Floor 45 C61–62 changes from W18×40 to W16×40; Floor 44 stays W18×40. **Upper detail packages:** The integrated inventory includes 12 sloping W14×109 front supports, 12 W8×24 ties, 68 cooling beams, 21 cooling posts, 26 shop-verified Floor 46/47/roof local beams, 2 Floor 47 shaft beams and 36 column plate assemblies. Eleven labeled TS tube bays remain source records only. Multi-floor supports and reinforcement plates are counted in the rendered inventory and visible plan bands, but are not assigned to one floor in the P/C/O/A table. [Open the floor/source comparison](floor-by-floor-audit.html). [Exact 105 readings and prior assignments](west-core-floor-transcription.json). [Machine-readable ledger](floor-by-floor-audit.json). ## What the audit establishes - The integrated renderer emits 9,961 distinct member records. Web/flange plates, split beam arms, and standalone packages already imported into the transfer frame are not counted twice. This number does not measure completeness. - Floors 1–7 have large missing floor-plane regions despite modeled wall elevations and transfer trusses. Their first next actions are listed individually below. - Typical office floors still repeat 79 office spans each; residual S8 primary-core assumptions remain explicitly counted for each floor. - Floors 21–23 have their own 104 primary W spans but no complete outer/intermediate floor graphs. Floors 46–roof also need independent completion. - Known lobby openings and Floor 47 FUTURE office framing must remain open. Absence of model steel alone is not evidence of a real opening. - N2–N9 are eight known omitted existing support shafts. The source establishes plan locations, not their rolled sections or endpoints. Foundations and street grade require their own source registration. - Floor 1 slabThicknessFt is now null: a variable slab must not reuse the 8in steel-to-slab offset as uniform thickness. The source general slab and steel elevations are unchanged. ## Floor register P = perimeter-beam package; C = primary-core W package; O = office package; A = other floor-attributed beam/assembly records. These categories are inventories, not expected totals. Lower wall/core chords and local floor beams appear under A. Multi-floor columns/braces without a single floor attribution remain in the full inventory. | Level | Erection sheet | General steel EL | P / C / O / A | First remaining action | |---|---|---|---|---| | Floor 1 | [E1](floor-audit-source-crops/E1-overview.png) | 308′7″ | 0 / 0 / 0 / 29 | Complete the two pocket graphs and opening edges; recover E6/old-core supports, hanger A272 registration and existing substation framing | | Floor 2 | [E2](floor-audit-source-crops/E2-overview.png) | 319′10.5″ | 0 / 0 / 0 / 51 | Trace cantilever edge ties, remaining secondaries, north rectangle framing and A272/B272 hangers; recover opening reinforcement and connections | | Floor 3 | [E3](floor-audit-source-crops/E3-overview.png) | 334′0″ | 0 / 0 / 0 / 65 | Resolve MG32/A272 hanger registration and recover the E3 cantilever/secondary strip, west wing and old/new roof connections | | Floor 4 | [E4](floor-audit-source-crops/E4-overview.png) | 348′0″ | 0 / 0 / 0 / 180 | Continue shaft/opening steel south of H289, including D289/G289 and hanger interfaces; transcribe field drawings FW4/FW51/FW73/FW81/FW83/FW105 and resolve remaining fractional span differences | | Floor 5 | [E5](floor-audit-source-crops/E5-overview.png) | 361′7″ | 0 / 0 / 0 / 73 | Trace E5 intermediate beams, north floor framing and side-wing plans | | Floor 6 | [E6](floor-audit-source-crops/E6-overview.png) | 375′3″ | 0 / 0 / 0 / 66 | Transcribe E6 floor beams and its local elevations | | Floor 7 | [E7](floor-audit-source-crops/E7-overview.png) | 388′4″ | 0 / 0 / 0 / 87 | Resolve the MG24/25/26 local workline differences and transcribe the remaining E7 floor graph | | Floor 8 | [E8_9](floor-audit-source-crops/E8_9-overview.png) | 401′3.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 9 | [E8_9](floor-audit-source-crops/E8_9-overview.png) | 414′0.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 10 | [E10_11](floor-audit-source-crops/E10_11-overview.png) | 426′9.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 11 | [E10_11](floor-audit-source-crops/E10_11-overview.png) | 439′6.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 12 | [E12_13](floor-audit-source-crops/E12_13-overview.png) | 452′3.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 13 | [E12_13](floor-audit-source-crops/E12_13-overview.png) | 465′0.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and 74 unchecked office members against the erection sheets; resolve the five checked members’ individual-floor piece assignments and connections, and trace stair, shaft and small end-bay infill without bridging openings. | | Floor 14 | [E14_15](floor-audit-source-crops/E14_15-overview.png) | 477′9.5″ | 58 / 31 / 79 / 6 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings | | Floor 15 | [E14_15](floor-audit-source-crops/E14_15-overview.png) | 490′6.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 16 | [E16_17](floor-audit-source-crops/E16_17-overview.png) | 503′3.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 17 | [E16_17](floor-audit-source-crops/E16_17-overview.png) | 516′0.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings | | Floor 18 | [E18_E19](floor-audit-source-crops/E18_E19-overview.png) | 528′9.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 19 | [E18_E19](floor-audit-source-crops/E18_E19-overview.png) | 541′6.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 20 | [E20](floor-audit-source-crops/E20-overview.png) | 554′3.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 21 | [E21](floor-audit-source-crops/E21-overview.png) | 567′0.5″ | 58 / 35 / 0 / 2 | Transcribe E21 outer floor, intermediate and shaft framing from its own plan | | Floor 22 | [E22_23](floor-audit-source-crops/E22_23-overview.png) | 581′9.5″ | 58 / 35 / 0 / 2 | Follow E22/23 Floor 22 labels and E122 belt connections; do not import the Floor 23 part-plan substitutions. | | Floor 23 | [E22_23](floor-audit-source-crops/E22_23-overview.png) | 596′6.5″ | 58 / 34 / 0 / 3 | Complete outer floor and shaft framing; keep the 6in/14in depressed steel and actual N/S elevations distinct. | | Floor 24 | [E24](floor-audit-source-crops/E24-overview.png) | 611′3.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings | | Floor 25 | [E25](floor-audit-source-crops/E25-overview.png) | 624′0.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings | | Floor 26 | [E26_27](floor-audit-source-crops/E26_27-overview.png) | 636′9.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 27 | [E26_27](floor-audit-source-crops/E26_27-overview.png) | 649′6.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 28 | [E28_29](floor-audit-source-crops/E28_29-overview.png) | 662′3.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 29 | [E28_29](floor-audit-source-crops/E28_29-overview.png) | 675′0.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 30 | [E30_31](floor-audit-source-crops/E30_31-overview.png) | 687′9.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 31 | [E30_31](floor-audit-source-crops/E30_31-overview.png) | 700′6.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings | | Floor 32 | [E32_33](floor-audit-source-crops/E32_33-overview.png) | 713′3.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 33 | [E32_33](floor-audit-source-crops/E32_33-overview.png) | 726′0.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 34 | [E34_35](floor-audit-source-crops/E34_35-overview.png) | 738′9.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 35 | [E34_35](floor-audit-source-crops/E34_35-overview.png) | 751′6.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 36 | [E36_37](floor-audit-source-crops/E36_37-overview.png) | 764′3.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 37 | [E36_37](floor-audit-source-crops/E36_37-overview.png) | 777′0.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings | | Floor 38 | [E38_39](floor-audit-source-crops/E38_39-overview.png) | 789′9.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings | | Floor 39 | [E38_39](floor-audit-source-crops/E38_39-overview.png) | 802′6.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings | | Floor 40 | [E40_41](floor-audit-source-crops/E40_41-overview.png) | 815′3.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 41 | [E40_41](floor-audit-source-crops/E40_41-overview.png) | 828′0.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 42 | [E42_43](floor-audit-source-crops/E42_43-overview.png) | 840′9.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 43 | [E42_43](floor-audit-source-crops/E42_43-overview.png) | 853′6.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 44 | [E44_45](floor-audit-source-crops/E44_45-overview.png) | 866′3.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. | | Floor 45 | [E44_45](floor-audit-source-crops/E44_45-overview.png) | 879′0.5″ | 58 / 35 / 79 / 2 | Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings | | Floor 46 | [e46](floor-audit-source-crops/e46-overview.png) | 893′3.5″ | 58 / 34 / 0 / 6 | Resolve the revised C68–69 opening and MG61 datum, and add actual E46 outer beams and cooling braces from their own details. | | Floor 47 | [e47](floor-audit-source-crops/e47-overview.png) | 906′0.5″ | 0 / 21 / 0 / 64 | Preserve FUTURE areas; trace actual tank, equipment, opening and remaining north-strip framing | | Roof | [E48](floor-audit-source-crops/E48-overview.png) | 920′7.5″ | 0 / 37 / 0 / 81 | Resolve B/C4495 west stations; complete E48 secondary and bulkhead framing; register the eleven outer tubes and roof-front connection workpoints, and trace remaining cooling braces and local roof cuts. | ## Per-floor findings ### Floor 1 — Street lobby / first floor Twenty-four recovered floor beams occupy only the southeast and lowered west pockets, including four W8×24 secondary spans. The street lobby had doors and an enclosure; this exposed-steel view omits them. E1 also shows local openings, a truck ramp and existing steel; its blank north area does not document an empty substation. Next: Complete the two pocket graphs and opening edges; recover E6/old-core supports, hanger A272 registration and existing substation framing. Preserve west steel EL305′1″ and raised B237. Review scope: Fresh erection-plan overview / integrated-inventory comparison plus cited detailed audits. Member-by-member floor transcription remains open. Sources: [lobby-completion-audit.md](lobby-completion-audit.md), [grade-lobby-audit.md](grade-lobby-audit.md), [first-floor-west-audit.md](first-floor-west-audit.md), [existing-north-support-audit.md](existing-north-support-audit.md); [E1 overview](floor-audit-source-crops/E1-overview.png). ### Floor 2 — Partial mezzanine Sixteen south/west and twenty-two east beams are recovered. H245X now stops at B272, and G245/H245X use native steel EL321′1½″. Shop sizes A225 W36×135, B225 W36×210 and H239 W14×22 supersede conflicting plan callouts. Four M216/N216 cantilevers and five opening-edge beams now join the primary/intermediate graph. A225/B225 have actual rolled-end setbacks, copes and three rounded web openings. Reinforcement, connections, edge ties, hangers and floor-wide framing remain incomplete. Next: Trace cantilever edge ties, remaining secondaries, north rectangle framing and A272/B272 hangers; recover opening reinforcement and connections. Keep local east steel321′1½″ separate from general steel319′10½″ and core322′0″. Preserve A7 OPEN TO LOBBY BELOW. Review scope: Fresh erection-plan overview / integrated-inventory comparison plus cited detailed audits. Member-by-member floor transcription remains open. Sources: [lobby-completion-audit.md](lobby-completion-audit.md), [grade-lobby-audit.md](grade-lobby-audit.md), [transfer-frame-audit.md](transfer-frame-audit.md), [lower-floor-datum-audit.md](lower-floor-datum-audit.md); [E2 overview](floor-audit-source-crops/E2-overview.png). ### Floor 3 — Main lobby / promenade Eleven south spans, fourteen east primary beams and MG32 primary plates are recovered. Column79 A59/A107/A178 and Column81 A44/A121/A179 now join the upper schedules. MG32 end/attachment registration and three E3 attachment-station differences remain explicit; secondary steel, the west wing, core openings and old north roof steel are incomplete. Next: Resolve MG32/A272 hanger registration and recover the E3 cantilever/secondary strip, west wing and old/new roof connections. Recover Column81 first lift below A44 and N2–N9 original sections/endpoints. Review scope: Fresh erection-plan overview / integrated-inventory comparison plus cited detailed audits. Member-by-member floor transcription remains open. Sources: [lobby-completion-audit.md](lobby-completion-audit.md), [floor3-east-and-column79-audit.md](floor3-east-and-column79-audit.md), [grade-lobby-audit.md](grade-lobby-audit.md), [transfer-frame-audit.md](transfer-frame-audit.md), [existing-north-support-audit.md](existing-north-support-audit.md); [E3 overview](floor-audit-source-crops/E3-overview.png). ### Floor 4 — Atrium above main lobby The north package contains 60 floor members, with three middle core girders modeled separately. Eleven northeast beams now add the C315/B321 bearing graph and revised A321Y W30×173. The side package contains61 west/east members, including MG41, southeast opening edges, two oblique crosspieces and four inner-west-strip beams. Nine earlier span differences exceeding0.5in were reconciled to original attachment stations and corrected native fractions. Fractional residuals, field revisions and old E3/E4 substrates remain incomplete. Next: Continue shaft/opening steel south of H289, including D289/G289 and hanger interfaces; transcribe field drawings FW4/FW51/FW73/FW81/FW83/FW105 and resolve remaining fractional span differences. Recover old E3/E4 supports separately from the new source-bounded shafts. Preserve the large south lobby opening. Review scope: Fresh erection-plan overview / integrated-inventory comparison plus cited detailed audits. Member-by-member floor transcription remains open. Sources: [floor4-side-framing-audit.md](floor4-side-framing-audit.md), [lower-east-completion-audit.md](lower-east-completion-audit.md), [floor4-north-completion-audit.md](floor4-north-completion-audit.md), [north-substation-audit.md](north-substation-audit.md), [grade-lobby-audit.md](grade-lobby-audit.md); [E4 overview](floor-audit-source-crops/E4-overview.png). ### Floor 5 — Lower transfer / mechanical framing Twelve south floor beams, core chords and MG53 are modeled. E5 has a much denser floor graph across north, south and side wings than those bounded assemblies. Next: Trace E5 intermediate beams, north floor framing and side-wing plans. Resolve support continuity and MG53 existing substrates independently of the floor slab. Review scope: Fresh erection-plan overview / integrated-inventory comparison plus cited detailed audits. Member-by-member floor transcription remains open. Sources: [transfer-frame-audit.md](transfer-frame-audit.md), [completion-checklist.md](completion-checklist.md); [E5 overview](floor-audit-source-crops/E5-overview.png). ### Floor 6 — Transfer level Lower-wall beams and selected core chords are present. Original shop0184 now adds E3/B184 and E4/A184 above the MG53 stubs through EL388′3″. There is still no complete E6 floor graph; the northern row, southern intermediate framing and end wings remain largely incomplete. Next: Transcribe E6 floor beams and its local elevations. Crossed/open eastern and southwest regions require their own details; do not infer a regular infill grid. Review scope: Fresh erection-plan overview / integrated-inventory comparison plus cited detailed audits. Member-by-member floor transcription remains open. Sources: [lower-east-completion-audit.md](lower-east-completion-audit.md), [transfer-frame-audit.md](transfer-frame-audit.md), [completion-checklist.md](completion-checklist.md); [E6 overview](floor-audit-source-crops/E6-overview.png). ### Floor 7 — Transfer interface to office tower Fourteen recovered east members add eleven rolled beams and MG24/MG25/MG26 primary plate bodies to the transfer graph. Shop 0525 identifies C525 as W36×160. The three built-up girders retain unresolved shop/common-grid closure differences; substantial E7 floor and opening framing remains missing. Next: Resolve the MG24/25/26 local workline differences and transcribe the remaining E7 floor graph. Resolve MG23’s 2in datum conflict, A630 and transfer bearing/connection assemblies. Review scope: Fresh erection-plan overview / integrated-inventory comparison plus cited detailed audits. Member-by-member floor transcription remains open. Sources: [floor7-east-framing-audit.md](floor7-east-framing-audit.md), [north-substation-audit.md](north-substation-audit.md), [mg23-transfer-girder-audit.md](mg23-transfer-girder-audit.md), [transfer-frame-audit.md](transfer-frame-audit.md); [E7 overview](floor-audit-source-crops/E7-overview.png). ### Floor 8 — Office floor 3 of 35 modeled primary W records have an explicit erection-section check. 32 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E8_9 overview](floor-audit-source-crops/E8_9-overview.png). ### Floor 9 — Office floor 3 of 35 modeled primary W records have an explicit erection-section check. 32 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40. Corrected: C58–61 W24X55 → W27X161; C59–62 W21X44 → W24X76. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E8_9 overview](floor-audit-source-crops/E8_9-overview.png). ### Floor 10 — Office floor 3 of 35 modeled primary W records have an explicit erection-section check. 32 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E10_11 overview](floor-audit-source-crops/E10_11-overview.png). ### Floor 11 — Office floor 3 of 35 modeled primary W records have an explicit erection-section check. 32 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40. Corrected: C58–61 W24X55 → W27X161; C59–62 W21X44 → W24X76. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E10_11 overview](floor-audit-source-crops/E10_11-overview.png). ### Floor 12 — Office floor 4 of 35 modeled primary W records have an explicit erection-section check. 31 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E12_13 overview](floor-audit-source-crops/E12_13-overview.png). ### Floor 13 — Office floor 6 of 35 modeled primary W records have an explicit erection-section check. 29 still repeat S8 design. 5 of 79 office members in the C44–79 east bay have bounded paired E12/13 mark, section and workline checks. The other 74 lack this local check; individual Floor 13 piece assignment, fabrication ends and connections remain unresolved for all five checked members. Next: Audit the remaining core spans and 74 unchecked office members against the erection sheets; resolve the five checked members’ individual-floor piece assignments and connections, and trace stair, shaft and small end-bay infill without bridging openings. Review scope: Native three-span west-core check, bounded C44–79 east-bay framing check and integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40; C44–79 A2001/W33X130 and four C41–C38 W24X55 east tributaries on the paired E12/13 plan. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md), [f13-east-framing-audit.md](f13-east-framing-audit.md); [E12_13 overview](floor-audit-source-crops/E12_13-overview.png). ### Floor 14 — Office floor 4 of 31 modeled primary W records have an explicit erection-section check. 27 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Preserve the four separate MG141/MG142 plate-girder replacements. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E14_15 overview](floor-audit-source-crops/E14_15-overview.png). ### Floor 15 — Office floor 6 of 35 modeled primary W records have an explicit erection-section check. 29 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E14_15 overview](floor-audit-source-crops/E14_15-overview.png). ### Floor 16 — Office floor 3 of 35 modeled primary W records have an explicit erection-section check. 32 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E16_17 overview](floor-audit-source-crops/E16_17-overview.png). ### Floor 17 — Office floor 3 of 35 modeled primary W records have an explicit erection-section check. 32 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Retain the explicit C66–69 W18×71 exception. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40. Corrected: C58–61 W24X55 → W27X161; C59–62 W21X44 → W24X76. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E16_17 overview](floor-audit-source-crops/E16_17-overview.png). ### Floor 18 — Office floor 3 of 35 modeled primary W records have an explicit erection-section check. 32 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E18_E19 overview](floor-audit-source-crops/E18_E19-overview.png). ### Floor 19 — Office floor 3 of 35 modeled primary W records have an explicit erection-section check. 32 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40. Corrected: C58–61 W24X55 → W27X161; C59–62 W21X44 → W24X76. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E18_E19 overview](floor-audit-source-crops/E18_E19-overview.png). ### Floor 20 — Office floor 3 of 35 modeled primary W records have an explicit erection-section check. 32 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E20 overview](floor-audit-source-crops/E20-overview.png). ### Floor 21 — Computer floor 35 primary W spans and two N/S built-ups are modeled; E21 shows extensive north/south/end floor beams outside that graph. Next: Transcribe E21 outer floor, intermediate and shaft framing from its own plan. Do not copy the 79 office templates. Review scope: Fresh erection-plan overview / integrated-inventory comparison plus cited detailed audits. Member-by-member floor transcription remains open. Sources: [computer-floor-primary-audit.md](computer-floor-primary-audit.md); [E21 overview](floor-audit-source-crops/E21-overview.png). ### Floor 22 — Computer / belt floor 35 primary W spans, two N/S built-ups and belt braces are represented; floor-wide secondary and opening framing remain missing. Next: Follow E22/23 Floor 22 labels and E122 belt connections; do not import the Floor 23 part-plan substitutions. Review scope: Fresh erection-plan overview / integrated-inventory comparison plus cited detailed audits. Member-by-member floor transcription remains open. Sources: [computer-floor-primary-audit.md](computer-floor-primary-audit.md), [belt-frame-audit.md](belt-frame-audit.md); [E22_23 overview](floor-audit-source-crops/E22_23-overview.png). ### Floor 23 — Computer / belt floor 34 primary W spans and three built-ups include the distinct Floor 23 part plan. Five rolled members and MG371 retain local depressions. Next: Complete outer floor and shaft framing; keep the 6in/14in depressed steel and actual N/S elevations distinct. Review scope: Fresh erection-plan overview / integrated-inventory comparison plus cited detailed audits. Member-by-member floor transcription remains open. Sources: [computer-floor-primary-audit.md](computer-floor-primary-audit.md); [E22_23 overview](floor-audit-source-crops/E22_23-overview.png). ### Floor 24 — Office floor 3 of 35 modeled primary W records have an explicit erection-section check. 32 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Floor 24 keeps the earlier N/S built-up bays and beam-axis band. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E24 overview](floor-audit-source-crops/E24-overview.png). ### Floor 25 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Floor 25 starts the shifted N/S girder bays and six altered office beam axes. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40. Corrected: C58–61 W24X55 → W27X161; C59–62 W21X44 → W24X76. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E25 overview](floor-audit-source-crops/E25-overview.png). ### Floor 26 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E26_27 overview](floor-audit-source-crops/E26_27-overview.png). ### Floor 27 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40. Corrected: C58–61 W24X55 → W27X161; C59–62 W21X44 → W24X76. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E26_27 overview](floor-audit-source-crops/E26_27-overview.png). ### Floor 28 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E28_29 overview](floor-audit-source-crops/E28_29-overview.png). ### Floor 29 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40. Corrected: C58–61 W24X55 → W27X161; C59–62 W21X44 → W24X76. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E28_29 overview](floor-audit-source-crops/E28_29-overview.png). ### Floor 30 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E30_31 overview](floor-audit-source-crops/E30_31-overview.png). ### Floor 31 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Use the explicitly redirected local part plan as well as the main panel. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40. Corrected: C58–61 W24X55 → W27X161; C59–62 W21X44 → W24X76. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E30_31 overview](floor-audit-source-crops/E30_31-overview.png). ### Floor 32 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E32_33 overview](floor-audit-source-crops/E32_33-overview.png). ### Floor 33 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40. Corrected: C58–61 W24X55 → W27X161; C59–62 W21X44 → W24X76. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E32_33 overview](floor-audit-source-crops/E32_33-overview.png). ### Floor 34 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E34_35 overview](floor-audit-source-crops/E34_35-overview.png). ### Floor 35 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40. Corrected: C58–61 W24X55 → W27X161; C59–62 W21X44 → W24X76. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E34_35 overview](floor-audit-source-crops/E34_35-overview.png). ### Floor 36 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E36_37 overview](floor-audit-source-crops/E36_37-overview.png). ### Floor 37 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Use the explicitly redirected local part plan as well as the main panel. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40. Corrected: C58–61 W24X55 → W27X161; C59–62 W21X44 → W24X76. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E36_37 overview](floor-audit-source-crops/E36_37-overview.png). ### Floor 38 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Keep WG55’s E38/39 W36×194 corroboration; review remaining local alterations. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E38_39 overview](floor-audit-source-crops/E38_39-overview.png). ### Floor 39 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Keep WG55’s E38/39 W36×194 corroboration; review remaining local alterations. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40. Corrected: C58–61 W24X55 → W27X161; C59–62 W21X44 → W24X76. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E38_39 overview](floor-audit-source-crops/E38_39-overview.png). ### Floor 40 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E40_41 overview](floor-audit-source-crops/E40_41-overview.png). ### Floor 41 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40. Corrected: C58–61 W24X55 → W27X161; C59–62 W21X44 → W24X76. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E40_41 overview](floor-audit-source-crops/E40_41-overview.png). ### Floor 42 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E42_43 overview](floor-audit-source-crops/E42_43-overview.png). ### Floor 43 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W18X40. Corrected: C58–61 W24X55 → W27X161; C59–62 W21X44 → W24X76. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E42_43 overview](floor-audit-source-crops/E42_43-overview.png). ### Floor 44 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W24X55; C59–62 W21X44; C61–62 W18X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E44_45 overview](floor-audit-source-crops/E44_45-overview.png). ### Floor 45 — Office floor 10 of 35 modeled primary W records have an explicit erection-section check. 25 still repeat S8 design. All 79 office spans still need complete tier-by-tier section/detail reconciliation. Next: Audit the remaining core spans and every office span against this erection sheet; trace stair, shaft and small end-bay infill without bridging openings. Use the explicitly redirected local part plan as well as the main panel. Review scope: Fresh native three-span west-core check plus integrated inventory; other-system findings carried from cited audits. New native checks: C58–61 W27X161; C59–62 W24X76; C61–62 W16X40. Corrected: C58–61 W24X55 → W27X161; C59–62 W21X44 → W24X76; C61–62 W18X40 → W16X40. Sources: [interior-framing-audit.md](interior-framing-audit.md), [office-framing-audit.md](office-framing-audit.md); [E44_45 overview](floor-audit-source-crops/E44_45-overview.png). ### Floor 46 — Setback / cooling level All 34 S12 primary W column-pair spans match native E46 section labels and drawn connections. Two MG61s, 4 shop-verified north-strip beams and a separate cooling support frame with 68 beams and 21 tubular posts are modeled. E46 dimensions A4474/W36×170 9′7″ east of P55; its north-to-core span matches shop 4474/A. The 12 sloping W14×109 roof-front worklines start at the Floor 46 reference plane. S12 identifies NEW W14×26 and W16×26 steel and cut/shoring instructions at C68–69, but not unique paired endpoints. The current model correctly omits a straight C68–69 primary span; the local opening assembly remains incomplete. Next: Resolve the revised C68–69 opening and MG61 datum, and add actual E46 outer beams and cooling braces from their own details. Review scope: Fresh erection-plan overview / integrated-inventory comparison plus cited detailed audits. Member-by-member floor transcription remains open. Sources: [interior-framing-audit.md](interior-framing-audit.md), [f46-opening-audit.md](f46-opening-audit.md), [cooling-frame-audit.md](cooling-frame-audit.md), [upper-local-frame-audit.md](upper-local-frame-audit.md), [roof-front-frame-audit.md](roof-front-frame-audit.md); [e46 overview](floor-audit-source-crops/e46-overview.png). ### Floor 47 — Mechanical floor All 21 modeled E47 primary W spans match native E47 section labels and named-column connections. One built-up, 2 shop-verified local shaft beams and the A4452/W24×76 north-strip beam are also modeled. E47 measures A4452 10′2½″ east of P55; its 52′9″ north-to-core workline matches shop 4452. All 58 Floor 47 wind-girder bays and four corner joins match native E47/S13 section and topology strips. 12 W8×24 roof-front ties cross the sloping supports at this level; 11 TS12×6×½ outer bays have E47 marks and shop lengths but lack transverse centerlines and physical end workpoints, so they remain unrendered. Much exterior office area is explicitly FUTURE framing. Next: Preserve FUTURE areas; trace actual tank, equipment, opening and remaining north-strip framing. Resolve the raised-beam 0.5in datum discrepancy and the outer tube workpoints. Review scope: Fresh erection-plan overview / integrated-inventory comparison plus cited detailed audits. Member-by-member floor transcription remains open. Sources: [interior-framing-audit.md](interior-framing-audit.md), [f47-primary-frame-reconciliation.md](f47-primary-frame-reconciliation.md), [f47-local-frame-audit.md](f47-local-frame-audit.md), [roof-front-frame-audit.md](roof-front-frame-audit.md), [upper-local-frame-audit.md](upper-local-frame-audit.md); [e47 overview](floor-audit-source-crops/e47-overview.png). ### Roof — Roof / bulkheads All 37 modeled E48 primary W spans match native roof-plan section labels and named-column topology. The S18 roof band matches all 58 perimeter column cells: 46 sized tiers and 12 intentional blanks above the south setback. All 58 roof wind-girder bay sections and four corner joins match native E48/S14 plan strips. 21 shop-verified local beams are modeled: 8 east-side secondaries, 2 southeast D/G4495 secondaries, the A4243 diagonal, 4 west-side secondaries, the H4483/B4471 west supports and four north-strip girders. The east P27 roof return section is corrected to W18×35 from S-14/shop 4275. H4483's physical overall is 0.642 inch shorter than its registered support-axis span. B4471's shop overall is 2.205 inches shorter than its E48 north-girder-to-D4485 support-axis span; both physical end clearances remain open. The perimeter, inset and bulkhead systems are also modeled. The west bulkhead's 16 main roof beams match the S-16/E48 plan sections and connections. The 12 sloping W14×109 front supports reach the roof reference datum; their fabrication joint cuts remain open. E48 has additional outer, opening, trolley and local roof members beyond these bounded packages. Next: Resolve B/C4495 west stations; complete E48 secondary and bulkhead framing; register the eleven outer tubes and roof-front connection workpoints, and trace remaining cooling braces and local roof cuts. Review scope: Fresh erection-plan overview / integrated-inventory comparison plus cited detailed audits. Member-by-member floor transcription remains open. Sources: [roof-frame-audit.md](roof-frame-audit.md), [bulkhead-frame-reconciliation.md](bulkhead-frame-reconciliation.md), [bulkhead-local-steel-pending-audit.md](bulkhead-local-steel-pending-audit.md), [roof-perimeter-column-audit.md](roof-perimeter-column-audit.md), [roof-primary-frame-audit.md](roof-primary-frame-audit.md), [roof-front-frame-audit.md](roof-front-frame-audit.md), [upper-local-frame-audit.md](upper-local-frame-audit.md), [cooling-frame-audit.md](cooling-frame-audit.md); [E48 overview](floor-audit-source-crops/E48-overview.png). ## Reproduction and limits Run `python3 tools/build_wtc7_floor_audit_sources.py`, `python3 tools/transcribe_wtc7_west_core.py`, `python3 tools/build_wtc7_interior_framing.py`, `node tools/build_wtc7_floor_audit.mjs`, and `python3 tools/build_wtc7_floor_audit_report.py`. Source SHA256s and crop bounds are retained in `floor-audit-source-crops/source-index.json`. Plan diagrams show actual model worklines in a slab-minus4ft to slab-plus0.1ft band, plus floor-attributed local beams. They are not complete floor planes, shop solids, registered raster overlays or a structural connectivity/capacity analysis. Deep girders and local raised/lowered framing require the source sections and adjacent-level views. Source images are resized overviews; exact section readings use the separate native crops.