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Mangaluru prone to earthquakes, says survey

[email protected] (DHNS)
May 6, 2015

Mangaluru, May 6: According to an experts survey, it has been found that buildings in Bejai-Balmatta, Attavar -Hampankatta, have not adhered to IS 1893 : 2002, Part 1, which is the criteria for earthquake resistant design of structures, NITK?Civil Engineering Department Professor D Venkat Reddy said.

He was delivering a talk on ‘Earth, oceans and coastal zone management’, organised by Institution of Engineers (India) local centre an Institution of Valuers Mangalore Branch in Mangaluru.

mangalurucity

The city falls in seismic zone-3 which means that the quakes of intensity six could occur. The buildings could withstand the earthquakes up to five in the Richter scale. As per Indian Standards on Earthquake Engineering, IS1893:1984 criteria for Earthquake Resistant Design of Structures, the country has been categorised into five seismic zones, based on the seismic intensity. IS is about earthquake resistant design of structures and is applicable to buildings, and other structures such as bridges, dams etc. Earthquakes of magnitude of eight take place in zone five. Nethravathi and Gurupur river basins are tectonically active.

As observed in Nepal, the structural failure of buildings have caused more amount of damage. In contrast, the Pashupathinath Temple is intact, though the building in its surrounding have been badly effected, which is due to the difference in structural pattern.

He further said that seismic waves alone are not responsible . Seismic activities take place round the clock. The earthquakes take place due to the sudden failure of strata. As per an estimation, around one thousand take place across the world everyday and three of them could be serious.

A lineament which is a fault in the underlying geological structure and the constructions on these lineaments such as railway tracks, bridges etc could cause more danger. IIS?has established a network system which records the seismic activities and which can even record 0.1 mm change in the crest of the earth. As per the movement of earth plates, a region will be displaced in a span of hundred years.

Comments

Arjun Neil Menezes
 - 
Tuesday, 20 Feb 2018

I'm building a 1story house with slab on load bearing walls instead of the concrete frame structure. Will this be resistant agaianst earthquakes?

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News Network
April 9,2020

Bengaluru, Apr 9: 10 new positive cases have been confirmed in Karnataka, apart from the recent fatality of an 80-year-old woman from Gadag district, the health department said on Thursday.

The fresh cases have been reported in the state from last evening to Thursday noon.

Till date, 191 COVID-19 positive cases have been confirmed, which includes 6 deaths and 28 discharges, the update said.

Among the 10 positive cases, eight are contacts of patients who have already tested positive- one each from Belagavi, Mandya and Chikkaballapura, two from Mysuru, and three from Bagalkote; while two from Bengaluru city are with a travel history to Delhi.

Three cases from Bagalkote are children- two boys of 4 and 13 years of age, and one girl of 9 years old.

The elderly woman died on April 8 in Gadag, the department said in its mid-day situation update.

Confirming that her reports tested positive on April 7, officials had said, she had a history of Severe Acute Respiratory Infection (SARI).

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News Network
May 4,2020

Mangaluru, May 4: District Health Officer Dr Ramachandra Bairi on Monday said that a special team, comprising of six members, has been constituted to find the source of Corona infection in Dakshina Kannada .

The team is expected to file its report by May 6. It is still not clear if Bantwal was the source was the infection or not.

He said 1st phase of investigation in this regard is complete and the samples taken on the 12th day will give a clear picture.

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News Network
January 29,2020

Mangaluru, Jan 29: The police have registered a suo motu case against some of the youths who raised life threat slogans against former Karnataka Minister and Congress MLA UT Khader during the pro-Citizenship Amendment Act rally here on January 27.

A video of the incident that went viral on social media showed the youths belonging to BJP and other saffron outfits raising slogans that they will “cut off his limbs and chop off his head if necessary” during the rally organised by the BJP in support of the Citizenship Amendment Act on Monday.

Though Mr Khader did not file a complaint, the Congress party had urged the police to register a suo motu case.

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