regional elevation closure
173.75 − 171.75 = 2′0″2 ft
Confirms two regional floor controls; does not locate the transition in plan.
Drawing notation: FIN. 7TH FLOOR – MADISON STREET EL. 173.75; FIN. 7TH FLOOR – MAIN STREET EL. 171.75
Calculated from: ms-frame-seventh-floor-schedule-finish-printed, ms-datum-F7-main-street-printed