The expert committee, assigned to carry out the renovation of the 237-year-old British-built building, is composed of members of the Jadavpur University's architecture, civil, metallurgy and some other departments.
"I have submitted the first and second part of the four-phase final report to the PWD Department recently," Prof Madhumita Ray, Head of the Architecture Department, Jadavpur University, told PTI.
She said that the remaining two parts along with proposals would be placed before the government soon.
She said that the committee intended to complete the project within two-and-a-half years and the estimated expenses would be chalked out soon.
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Going into the details, Ray said that the committee recommended demolition of additional floors which have come up on the third floor of the main block and five other blocks starting from Block-I to Block-V, besides Block-A to Block-D.
"The heritage structure is getting stressed because of these additional constructions, especially non-heritage ones. A part of the plan is to demolish post-Independence era structures that have cramped up the interiors and obstructed ventilation," she said.
Besides rooting for energy-efficient technologies like water harvesting and solar panels, the building will have ample light and air - markers of a green building, Ray says.
Experts from the Indian National Trust for Art and Cultural Heritage (INTACH) and those of the Indian Institute of Engineering, Science and Technology (IIEST) are also lending a hand with suggestions.