Civil work including design for remodelling of existing gate no 4 of Chandni Chowk Metro Station for installation of new escalator, dismantling of existing staircase and re-construction, Construction of shed, TOM and other remodelling related work. Civil work including design for remodelling of existing gate no 4 of Chandni Chowk Metro Station for installation of new escalator, dismantling of existing staircase and re-construction, Construction of shed, TOM and other remodelling related work.