A continuous beam is deemed to be a deep beam when the ratio of effective span to overall depth is less than

Explanation:

• A deep beam is characterized by having a small span-to-depth ratio, meaning it is relatively deep compared to its span.

• According to IS 456:2000 and common structural engineering practice, a beam is considered deep if  the ratio of effective span to overall depth is less than 2.5.

Additional InformationContinuous Beam 

• A continuous beam is a beam that spans over more than two supports without any hinges or joints in between.

• Unlike simply supported beams, continuous beams provide moment redistribution and greater structural efficiency.

• Because of multiple supports, the beam experiences negative moments over supports and positive moments at mid-spans.

• Continuous beams generally have lower maximum bending moments and deflections compared to simply supported beams of the same span and loading.

• Used widely in building floors, bridges, and other structures for better load-carrying capacity and economy.