total rise count
UP 20 RISERS / DOWN 20 RISERS20 count
verified source-local. Candidate only; no accepted physical flight, landing, shaft or floor cut.
Drawing notation: UP 20 RISERS / DOWN 20 RISERS
verified source-local; reused evidence: reused stair-e-w226-upper-stories-first.json and stair-e-upper-diagnostic-placement.json; no image reopened
Calculated from: w226-typical-up-riser-count, w226-typical-down-riser-count