Mangaluru prone to earthquakes, says survey

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
February 18,2020

Bengaluru, Feb 18: Passengers of the Ahmedabad bound GoAir flight had a providential escape when the engine of the aircraft while on the roll of take-off hit by a foreign object at the Kempe Gowda Bengaluru International Airport on Tuesday.

'The right engine of GoAir flight G8 802 from Ahmedabad to Bengaluru is suspected to have suffered from foreign object damage (FOD) while on take-off roll,' an official statement said.

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News Network
July 9,2020

Bengaluru, Jul 9: Alarmed over surging COVID-19 cases, the Karnataka government has decided to divide this tech city into containment zones to curb the spread of the pandemic, a state minister said on Thursday.

"The city will be divided into red, orange and yellow zones in commensurate with the number of Covid cases in them for containing the virus spread on war footing," Law and Parliamentary Affairs Minister J.C. Madhuswamy told reporters here.

Cabinet ministers representing assembly segments in the city will be in-charge of the zones to ensure the cases are curbed with strict enforcement of lockdown guidelines, especially wearing mask and maintaining social distancing by the people in the confinement areas.

"Chief Minister B.S. Yediyurappa has convened a meeting of ministers, MLAs, MPs and corporators of all the 198 civic wards across the city on Friday to discuss and draw an action plan to contain the pandemic," said Madhuswamy.

With 1,148 positive cases, the city''s Covid tally rose to 12,509 and active to 10,103, while 2,228 were discharged, including 418 on Wednesday, while 177 succumbed to the infection since March 9, with 23 in the last 24 hours.

"The Chief Minister ordered deploying more ambulances in the containment areas where cases have been spiking daily to rush Covid patients to the nearest hospital for immediate treatment," said Madhuswamy.

The city civic corporation -- Bruhat Bengaluru Mahanagara Palike (BBMP) --has increased the containment zones to 3,181 due to more cases spiking, with southern and western suburbs accounting for most infections.

"The containment zones are concentrated more in the city''s southern and western suburbs. Active cases doubled over the last 8 days and shot up to a whopping 12,509 from 4,555 on June 30," an official said.

Refuting graft charges by opposition Congress leader Siddaramaiah in the purchase of medical equipment for treatment of Covid patients, Madhuswamy said the state government had not spent more than Rs 600 crore so far.

"We are running a government. Not a private office. We will give account. He (Siddaramaiah) is welcome to check the accounts and verify the documents," asserted the minister.

In a related development, the cabinet also approved an ordinance to increase the state contingency fund to Rs 500 crore from Rs 80 crore for the Covid-19 induced economic relief measures announced by the chief minister in June.

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Agencies
July 5,2020

The deadly coronavirus that entered India while there was still nip in the air has beaten rising mercury, humid conditions, unique Indian genome and has entered monsoon season with more potency as fresh cases are only breaking all records in the country.

India recorded a single-day spike of record 24,850 new coronavirus cases on Sunday, taking its total tally to 6.73 lakh corona-positive cases.

Top Indian microbiologists were hopeful in March that after the 21-day lockdown, as summer approaches, the rise in temperature would play an important role in preventing the drastic spread of COVID-19 virus in India.

Several virologists hinted that by June this year, the impact of COVID-19 would be less than what it appeared in March-April.

The claims have fallen flat as the virus is mutating fast, becoming more potent than ever.

According to experts, the novel coronavirus is a new virus whose seasonality and response to hot humid weather was never fully understood.

"The theory was based on the fact that high temperatures can kill the virus as in sterilisation techniques used in healthcare. But these are controlled environment conditions. There are many other factors besides temperature, humidity which influence the transmission rate among humans," Dr Anu Gupta, Head, Microbiologist and Infection Control, Fortis Escorts Heart Institute, told IANS.

There is no built-up immunity to COVID-19 in humans.

"Also, asymptomatic people might be passing it to many others unknowingly. New viruses tend not to follow the seasonal trend in their first year," Gupta emphasized.

Globally, as several countries are now experiencing hot weather, the World Health Organization (WHO) reported a record hike in the number of coronavirus cases, with the total rising by 2,12,326 in 24 hours in the highest single-day increase since COVID-19 broke out.

So far over 11 million people worldwide have tested positive for the disease which has led to over 5,25,000 deaths, according to data from Johns Hopkins University. The US remained the worst-hit country with over 28 lakh cases, followed by Brazil with 15.8 lakh.

According to Sandeep Nayar, Senior Consultant and HOD, Respiratory Medicine, Allergy & Sleep Disorders, BLK Super Speciality Hospital in New Delhi, whether temperature plays a role in COVID-19 infection is highly debated.

One school of thought said in the tropical regions of South Asia, the virus might not thrive longer.

"On the other hand, another school of thought has found that novel Coronavirus can survive in a hot and humid environment and tropical climate does not make a difference to the virus. According to them, this is what distinguishes the novel coronavirus from other common viruses, which usually wane in hot weather," stressed Nayar.

Not much has been studied in the past and no definite treatment or vaccine is available to date.

"Every day, new properties and manifestation of the disease come up. As of now, the only way to prevent this monster is by taking appropriate precautions. Hand hygiene, social distancing, cough etiquette and face masks definitely reduce spread of COVID-19 infection," Nayar told IANS.

Not just top Indian health experts, even Indian-American scientists had this theory in mind that sunshine and summer may ebb the spread of the coronavirus.

Ravi Godse, Director of Discharge Planning, UPMC Shadyside Pennsylvania in the US told IANS in April: "In the summer, the humidity can go up as well, meaning more water drops in the air. If the air is saturated with water and somebody sneezes virus droplets into such air, it is likely that the droplets will fall to the ground quicker, making them less infectious. So the short answer is yes, summer/sunshine could be bettera.

According to Dr Puneet Khanna, Head of Respiratory Medicine and Pulmonology, Manipal Hospital, Delhi, COVID-19 death rates are not too different in tropical countries but since the disease affected them late it was yet to show its peak in these areas.

"The virus can survive well in hot and humid countries and this is proven now," he stressed.

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