A continuous beam is deemed to be a deep beam when the ratio of effective span to overall depth (1/D. is less than__________________? August 12, 2021January 12, 2019 by admin A continuous beam is deemed to be a deep beam when the ratio of effective span to overall depth (1/D. is less than__________________? A. 1.5 B. 2.0C. 2.5 D. 3.0