paired canonical slab-opening polygons
STAIR ENumeric value unresolved
W6/W7 traces are stair locators, not classified cut edges. Candidate only; no accepted physical flight, landing, shaft or floor cut.
Drawing notation: STAIR E
W6/W7 traces are stair locators, not classified cut edges; reused evidence: reused f4-w6-stair-e broad candidate locator and fourth-floor-w6-outer-face-registration.json; no image reopened
Drawing notation: STAIR E
W6/W7 traces are stair locators, not classified cut edges; reused evidence: reused provisional f5-stair-e envelope cited in stair-e-upper-diagnostic-placement.json; no image reopened