The piers were inspected by Delhi Metro Rail Corporation (DMRC) chief E Sreedharan, who has ordered a detailed inspection of one of the cracks. The other, he observed, is superficial.
The matter came to light when the consultant, Shirish Patel and Associates, appointed to check other Metro structures, especially cantilevers on all the under construction Phase II lines. The consultant was appointed after the Zamrudpur incident.
DMRC managing director E Sreedharan, who inspected the piers, said, "Both the hairline cracks seem to be superficial and related to masonry, which doesn't have a bearing on the strength of the piers. But we are not willing to take any chances now. This is why a more detailed investigation has been ordered into one of the cracks."
The cracks are being taken seriously after the collapse of Delhi Metro bridge which was resting on a pier on which cracks were noticed before the accident.