New Delhi: In wake of the fact that the national capital is included in the Seismic Zone IV and is prone to earthquakes of 5-6 magnitude on Richter scale, the Delhi government on an experimental basis is using the Base Isolation Technique (BIT) for the construction of three buildings which would be earthquake resistant.

The three buildings being constructed using the technology include a new eight floor OPD building at LNJP Hospital, a building with capacity of 500 beds at the GTB Hospital and a Super Specialty Hospital with capacity of 750 beds to come up in Dwarka.

The buildings constructed with this technique do not collapse during earthquakes but witness a minimal to-and-fro movement to bear the impact. A base isolated structure is supported by a series of bearing pads, which are placed between the building and its foundation. This technique has proved to be a success in the United States and other developed nations.

At LNJP hospital, a New Zealand-based company has been engaged to fit bearings in the base comprising 82 pillars. Thick iron rods will be fitted on these bearings. The iron rods will support the pillars which will extend up to the seventh floor of the building. The entire building structure will rest on these pillars. 

The Public Works Department officers said the construction work is being carried out by N N Buildcon Company. The entire project is expected to be completed before March 5, 2012. 

The construction work at GTB Hospital has already been completed, whereas the work at super specialty hospital in Dwarka has been delayed due to some reasons. As the construction work was started three years after the tenders were released, the project cost is being reviewed again.