The portico of the building of Jawaharlal Nehru Technology University (JNTU), at Kukatpally in Hyderabad, collapsed last night, following heavy rains. The building was constructed some 30 years ago. The portico was added later. However, due to a weak cantilever, that was unable to hold the heavy weight of the structure, it came down crashing. The engineers are reviewing the reasons for the collapse of the structure that came up, just 25 years ago. As the incident took place at night, there were no casaulities, the authorities said.