Printed values, calculations, image traces and observed counts are different kinds of evidence. “Verified” applies to the specific reading—not to the whole room or model.
stair-a-w221-first-plan-left-flight-controlsverified · printed
left_descending_flight_printed_tread_count
12 TREADS @ 10½″ = 10′6″12 count
Vertical left-flight equality, separate from basement lower/left records. Source-local only; no accepted physical geometry.
IMG_1109 · W-221 · Locate on drawing ↗Drawing notation: 12 TREADS @ 10½″ = 10′6″
Vertical left-flight equality, separate from basement lower/left records. Source-local only; no accepted physical geometry.
stair-a-w221-first-plan-left-flight-controlsverified · printed
left_descending_flight_printed_going
12 TREADS @ 10½″ = 10′6″10.5 in
Printed left-flight spacing. Source-local only; no accepted physical geometry.
stair-a-w221-first-plan-left-flight-controlsverified · printed
left_descending_flight_printed_run
12 TREADS @ 10½″ = 10′6″126 in
Printed equality result; no derived riser allocation. Source-local only; no accepted physical geometry.
stair-a-w221-first-plan-left-flight-controlsverified · printed
first_plan_down_riser_instruction
DOWN 22 RIS22 count
Down instruction at top of left descending flight; not a count of only the twelve-tread segment. Source-local only; no accepted physical geometry.
IMG_1109 · W-221 · Locate on drawing ↗Drawing notation: DOWN 22 RIS
Down instruction at top of left descending flight; not a count of only the twelve-tread segment. Source-local only; no accepted physical geometry.
stair-a-w221-first-plan-left-flight-controlsverified · printed
left_flight_transverse_witness
3′10½″46.5 in
Left flight transverse witness; rough/finish and rail intrusion unresolved. Source-local only; no accepted physical geometry.
stair-a-w221-first-plan-left-flight-controlsverified · printed
adjacent_opening_finish_components
MARBLE HEAD JAMB & STOOLLocal note at adjacent left opening; not global stair finish assignment. Source-local only; no accepted physical geometry.
IMG_1109 · W-221 · Locate on drawing ↗Drawing notation: MARBLE HEAD JAMB & STOOL
Local note at adjacent left opening; not global stair finish assignment. Source-local only; no accepted physical geometry.