Plan alignment uses the four-column pattern in A1.1/A2.1, the shared GF/P1 grid in S-502 and E-6 vector wall edges. A fifth column (C22) and the stair-adjacent tenant wall provide independent checks. A0.2 is used for orientation only. A1.1 allows +/- 1 ft for site dimensions; this model is for drawing coordination, not field set-out or drilling approval. Low wall and tread heights, slab thickness and local slopes are not established. Floor-plane separation follows A401 GF 176.15 m and the E-6 local P1 datum 171.95 m. Lift-bank outer walls and four car positions follow E-6; shaft divider walls are not inferred. E-6 beam references follow its dashed source edges and GR. FL. slab note. They are shown as plan bands, with clipped open ends; no beam soffit elevation is modelled. The S-105 P1 title / P2 note discrepancy is not used to establish GF beams. E-6 column dimension leaders are not treated as beam widths. ER-01/ER-02 are model IDs. Internal dimension callouts are transcribed from A2.1; use the issued plan for set-out. Beam reference check · Alignment check · E-6 source · A2.1 dimensions · S-502 structure key plan