Most of those in the building that collapsed on Saturday were construction workers from Andhra Pradesh and the northern states.
Tamil Nadu Chief Minister J Jayalalithaa has appointed a commission to probe and fix responsibility for the Chennai building collapse tragedy that left 60 dead.
Although the building that collapsed on Saturday had proper approval Tamil Nadu Chief Minister J Jayalalithaa had said, "It appears the building did not adhere to the approved plan and it suffered from structural defects".
Meanwhile, the Chennai Metropolitan Development Authority has also begun a crackdown on under-construction buildings in the city. Twenty teams comprising sixty officials and each headed by a deputy planner or assistant planner will inspect under-construction buildings and prepare a report within a month. Buildings which were recently awarded completion certificate will also be inspected.
"Structures that are found to have violated will be ordered to stop construction immediately. Those which have deviated would be examined against mandatory acceptable standards. If they satisfy norms they would be asked to apply afresh certified by a different structural engineer for approval", a senior officer told NDTV.
Under the scanner would be projects with fifty units and above or those with an area of 50000 sq ft.
An officer from the CMDA told NDTV, "Earlier we used to inspect only when they sought completion certificate. After the tragedy we can't afford to wait. We are turning pro-active".
Most of those in the building that collapsed on Saturday were construction workers from Andhra Pradesh and the northern states. Many were in the building to collect their wages.
A National Disaster Response Force team has been leading rescue work using gas cutters, iron rods and shovels after cranes lifted concrete blocks to get to the survivors. Rescue work is continuing in full swing.
The police have arrested six people including the owners of the building, structural engineers and architects.