We are designing for seismic zone 3 complaint. Several research reports point make this necessity considering micro-zonal seismic activity in Bangalore. We anticipate using 50% more steel (we use corrosive resistance steel in appropriate places) and concrete. This is not only going to make the building earth-quake resistant but also durable.
Bangalore should upgrade to Seismic Zone 3.
‘Unscientific land use makes Bangalore vulnerable to quake’
Bangalore: Although Bangalore does not have a significant earthquake history, unscientific land use — notably large-scale construction on land reclaimed from tanks and lakes — have “increased the vulnerability of this city even against a moderate earthquake”, says a new report sponsored by the Union Ministry of Earth Sciences.
The rapidly transforming city is seismically “moderately” active says the report titled “Seismic microzonation of Bangalore Urban Centre”, going on to recommend that south Karnataka, in particular Bangalore, Mandya and Kolar, be upgraded from the current Indian Seismic Zone II to Seismic Zone III.
The report, compiled by the Indian Institute of Science along with seven other institutes, was released here on Friday by Shailesh Naik, Secretary, Ministry of Earth Sciences. The report also observed that in recent years much of the seismic activity in Karnataka has been in the south, especially in the Bangalore-Mysore region. The Mandya-Channapatna-Bangalore lineament is the “seismogenic source” for the city, and an earthquake of magnitude 5 on the Richter Scale was the most intense the region has seen. “The high density of population, mushrooming of buildings… improper and low quality construction practices, unscientific land use and heavy traffic conditions only add to the damage scenario,” says the report.
The study looked at 220 sq. km. of the city and analysed parameters including seismotectonic and geological information, soil and climatic conditions, said T.G. Sitaram, professor, IISc., who compiled the report.
http://www.thehindu.com/todays-paper/tp-national/tp-karnataka/unscientific-land-use-makes-bangalore-vulnerable-to-quake/article689535.ece
Bangalore should upgrade to Seismic Zone 3.
‘Unscientific land use makes Bangalore vulnerable to quake’
Bangalore: Although Bangalore does not have a significant earthquake history, unscientific land use — notably large-scale construction on land reclaimed from tanks and lakes — have “increased the vulnerability of this city even against a moderate earthquake”, says a new report sponsored by the Union Ministry of Earth Sciences.
The rapidly transforming city is seismically “moderately” active says the report titled “Seismic microzonation of Bangalore Urban Centre”, going on to recommend that south Karnataka, in particular Bangalore, Mandya and Kolar, be upgraded from the current Indian Seismic Zone II to Seismic Zone III.
The report, compiled by the Indian Institute of Science along with seven other institutes, was released here on Friday by Shailesh Naik, Secretary, Ministry of Earth Sciences. The report also observed that in recent years much of the seismic activity in Karnataka has been in the south, especially in the Bangalore-Mysore region. The Mandya-Channapatna-Bangalore lineament is the “seismogenic source” for the city, and an earthquake of magnitude 5 on the Richter Scale was the most intense the region has seen. “The high density of population, mushrooming of buildings… improper and low quality construction practices, unscientific land use and heavy traffic conditions only add to the damage scenario,” says the report.
The study looked at 220 sq. km. of the city and analysed parameters including seismotectonic and geological information, soil and climatic conditions, said T.G. Sitaram, professor, IISc., who compiled the report.
http://www.thehindu.com/todays-paper/tp-national/tp-karnataka/unscientific-land-use-makes-bangalore-vulnerable-to-quake/article689535.ece
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