The Golden Gate Bridge in San Francisco has been making strange noises for the past year. Photo: Reuters Strange sound According to The Guardian (UK), in a windy tunnel in the southwest of Ontario, California, a team of acoustic and aerodynamic experts is testing on a model of the railing of the Golden Gate Bridge. Experts have contracted to solve the mystery of a strange humming sound emanating from the famous bridge in San Francisco over the past year. Some residents living nearby feel extremely uncomfortable hearing this noise. Accordingly, this mysterious sound appears only on days with strong winds. It has been compared by some to the “ghost harmonica”, “the sound of the monks chanting”, or the “wheezing sound”. This strange sound quickly became a thrilling story in San Francisco. A music producer has put it on a track of existential fear. Some amused people consider it the “mellow song” of the bridge, others say the sound is very “creepy” and they can’t stand it. aliens made this noise. “It sounds like a noise I can imagine prison guards use to torture prisoners,” one social media user shared. But whether San Francisco people love it or hate it, engineers will get rid of it next summer. Video: The mysterious sound from the Golden Gate Bridge (Source: Youtube): The cause of the mysterious sound After residents of the city began complaining about the noise in June 2020, authorities began an investigation. They monitor this sound and use instruments to measure the vibration of the humming. They found that the sound usually comes out at 440 hz, matching the note of A. The noise occurs when the wind hits the new balustrade, installed from a slight angle, slightly north or south, relative to the normal wind from the west. “After carefully studying the phenomenon, we determined the sound was coming from the new aerodynamic railing that we installed on the west side,” said Paolo Cosulich-Schwartz, a spokesman for the Bridge Management Board. . “It is part of the Golden Gate Bridge upgrade, designed to protect the bridge by allowing it to withstand sustained high winds of up to about 160 km/h.” He said new, thinner railings have been installed to ensure the bridge doesn’t have the same problems as the ill-fated Tacoma Narrows Bridge in Washington. The bridge shook violently in the wind, then collapsed in 1940, shortly after a few months of construction. “So we had to go ahead with this project. As climate change leads to more extreme weather events, it is imperative that the construction be completed as soon as possible,” said Cosulich-Schwartz, adding that the building was retrofitted with wind resistance in 2016. last year at a cost of $12 million. A study conducted in 2013 showed that the maximum wind speed that the bridge can withstand is 111 km/h. Since its inauguration, the Golden Gate Bridge has been closed 3 times due to bad weather conditions, in 1951 with strong winds of 111 km/h, in 1982 with strong winds of 113 km/h and in 1983 with strong winds of 121 km /H. Fortunately, no damage occurred. So bridge engineers looked for newer thin slats that would allow the bridge to withstand winds of up to 160km/h. They just didn’t expect the bars to create such a “symphony”. Wind gusts of 160km/h are only possible in the event of a tornado, hurricane or tropical storm, said Warren Blier, a senior science official with the National Weather Service. The Golden Gate Bridge has been closed 3 times in its history due to strong winds. Photo: AP Attempts to silence the noise Meanwhile, engineers are determined to find a way to fix the problem. At engineering firm RWDI, an hour west of Toronto, a model of a bridge the size of a conference room was built in a wind tunnel. Engineers are testing various wind speeds and modifications to see if they can quell the noise. However, in the city of San Francisco, not everyone wants this noise to go away. A local blogger even created a sound list around the Golden Gate Bridge to help listeners sleep better. “I love the sound,” says Brianne Howell, a resident of west San Francisco, who shot a video of the bridge humming on one of her regular walks along the coast. “It reminds me of the weird sound in a horror movie. It’s sad to have to remove it.” Construction of the Golden Gate Bridge was started in 1933 and completed in 1937. The bridge spanning the Pacific Ocean, connecting the city of San Francisco with Marin County, has a length of up to 2,700 meters and a ground height of nearly 90 meters. . The Golden Gate Bridge is not only famous for its arduous construction process, but is also known as a tourist magnet of the United States.

Hugo Súissas shows off his perspective and creativity through photos posted on his personal Instagram. Currently, his social networking site has 128,000 followers. Each photo conveys playfulness and an interesting message. In the picture, the Portuguese photographer impressed viewers when he extended his hand to “support” the statue of King José I riding an equestrian placed at the famous Praca do Comercio square. In addition to posing flexibly, making himself like a lively piece of the works, Hugo Súissas also uses familiar objects combined with unique arrangement ideas to “transform” each architectural work according to novel perspective. Sydney Opera House is a cultural and tourist icon of Australia. Hugo checked-in this place with a book that made “shells” look like the pages of a book being opened. Similarly, the Belém Tower fortress in the capital Lisbon was transformed into a giant sand castle. Praca do Comercio, the magnificent square in Lisbon, continues to be the inspiration for Hugo to create artistic photos. Three sides of the square are surrounded by yellow buildings in the Pombaline architectural style. The photographer creates a visual effect with the viewer when using an antique key combined in the frame and turning the gate into a lock. In addition, this is also the context for Hugo to create the image of a light bulb. The Eiffel Tower (France), the symbol of the “capital of light”, is associated with a clothespin. The Millennium Wheel (UK) located on the banks of the Thames became a giant pizza with 2 remaining pieces of cake through the arrangement of the male photographer. The 25 de Abril suspension bridge spans the River Tejo, connecting Lisbon with Almada (Portugal). The bridge has a design quite similar to the Golden Gate (Golden Gate Bridge) in the US. With his perspective, Hugo turned this building into a clothes drying plant. A pedestrian and bicycle bridge in Düsseldorf (Germany) was “turned” into a clothes hanger by him. With a rich imagination, Hugo associated the colorful buildings by the canal in Amsterdam (Netherlands) with luminous pens. El Castillo, a top tourist attraction in Chichen Itza (Mexico), was transformed by a photographer into a unique umbrella. El Castillo means “castle” in Spanish. It is one of the oldest Mayan temples and is listed as a World Heritage Site. Opening of the world’s longest suspension bridge for pedestrians The bridge 516 Arouca has just been inaugurated on April 29 in Northern Portugal. The bridge is 516 m long, holds the record as the longest pedestrian suspension bridge in the world.

https://dulich.petrotimes.vn/ The Manhattan Bridge is a suspension bridge that spans the East River in New York City, connecting Manhattan with downtown Brooklyn at Flatbush Avenue. The total length of this bridge is 6,855 ft (2,089 m). The Golden Gate Bridge https://dulich.petrotimes.vn/ The Golden Gate Bridge is considered the gateway on the road from the Pacific Ocean into San Francisco Bay. The bridge is 2.7 km long, the distance between the spans is 1,280 meters, 67 meters above the water surface, and the two bridge towers have a height of 230 meters from the water surface. https://dulich.petrotimes.vn/ It is also a symbol of the whole country, comparable to the Statue of Liberty, the Empire State Building or the Grand Canyon. New River Gorge . Bridge https://dulich.petrotimes.vn/ The New River Gorge Bridge is a 3,030 feet (924 m) long steel arch bridge that spans the New River Gorge near Fayetteville, eastern United States. With an arch of 1,700 feet (518 m), the New River Gorge is the longest single-span arch bridge in the world. Arthur Ravenel Jr. Bridge https://dulich.petrotimes.vn/ Arthur Ravenel, Jr. The Bridge is the longest cable-stayed bridge in the Western Hemisphere, spanning the Cooper River. Tilikum Crossing https://dulich.petrotimes.vn/ A cable-stayed bridge that spans the Willamette River in Portland, Oregon. This is the first major bridge in the US designed to allow vehicular traffic, cyclists and pedestrians, but not cars. Royal Gorge Bridge https://dulich.petrotimes.vn/ A fairly popular tourist attraction near Canon City, the Royal Gorge Bridge is located across a craggy gorge, just above the Arkansas River. Royal Gorge Bridge is about 384 m long, 5.5 m wide, built in 1929 and took about seven months to complete. The bridge is located at an altitude of 291 m above the Arkansas River and holds the record for the tallest bridge in the United States. High Trestle Trail Bridge https://dulich.petrotimes.vn/ The High Trestle Trail is in the state of Iowa, located in the Des Moines River valley. The bridge has a splendid and unique architecture with illuminated steel beams representing a view through a mine shaft, reflecting the coal mining history of the local area. And when sunset falls, the illuminated steel beams are the best time to admire the beauty of this bridge. https://dulich.petrotimes.vn/ It is rated as one of the 8 most beautiful pedestrian bridges in the world. https://dulich.petrotimes.vn/

The Great Wall of China is last on this list. The Internet connection here is rated as the worst, with speeds of only about 2Mbps when using mobile data. This comes as a big surprise, as the average internet speed in China is around 148Mbps. At this rate, a Chinese household can stream in Ultra-HD quality, on six devices at the same time. At the Great Wall, the internet connection speed via mobile data is only about 2Mbps. With a flood of free Wi-Fi networks and leading 4G connections in the world, it is easy to understand when the Golden Gate Bridge (San Francisco, USA), the Statue of Liberty (New York, USA) and the Sydney Opera House (Australia) occupy the top 3 positions in the ranking. Here, visitors can video call friends with clear images, or easily surf social networks with almost no lag. In Europe, the Eiffel Tower (France) ranks 4th on the rankings and is the best Internet connection location in this continent. Whether you’re sipping a latte at Les Ombres Rooftop Terrace or strolling at the foot of the tower, it’s not difficult to work remotely or follow trends on social media thanks to 31Mbps Internet speeds and plenty of free Wi-Fi. fees are available. Eiffel Tower is rated as the tourist destination with the best Internet connection in Europe. In the UK, although London is one of the world’s best 5G cities, Buckingham Palace is only ranked 7th on the list with 23Mbps internet speed. Meanwhile, Barcelona (Spain) not only attracts visitors with countless cultural and historical monuments and beautiful beaches, but also because of the convenience of the Internet. At the Sagrada Família in Barcelona, ​​the internet speed is around 31Mbps. The Royal Palace of Thailand in Bangkok is the highest ranked Asian representation in Uswitch’s ranking, with 6th place. Many other Asian representations rank low in this rating, such as the ancient citadel of Petra ( Jordan), the Angkor complex (Cambodia), the Taj Mahal (India) and the “loser” is the Great Wall of China (China).

Urban experts and architects say that it is time for authorities and related units to discuss and find future architectural works that when it comes to the world, the world will immediately think of the city. HCM City. There are no works of a caliber for Ho Chi Minh City According to the task of adjusting the general planning of Ho Chi Minh City until 2040, with a vision to 2060 being built, the City Department of Planning and Economic Affairs said: Regarding the orientation, the city will study and propose areas to create highlights. bamboo. This architectural highlight will note the height, the horizon … to create a unique identity for the city in the future. On April 29, talking to PV, architect Khuong Van Muoi, former President of the Association of Architects of Ho Chi Minh City, said that the search for ideas and construction of prominent architectural works are typical a “problem” is difficult, although the city really wants such a project. “Not now, but for a long time, we have held many competitions to design bridges, roads, architectural works … to find such typical highlights, but there are no works of a caliber for Ho Chi Minh City. Actually in the world too, it is not the test that will achieve the desired results ”- Mr. Muoi information. According to Mr. Muoi, typical architectural highlight works must be symbolic for that locality. For example: the Sydney Opera House (the Seashell Theater) in Sydney City – Australia, the Netherlands has a windmill project … which has special significance for that locality, to mention it immediately. instantly. “Currently we are in desperate need of typical architectural highlights, which means that when talking about that project, we know Ho Chi Minh City” – Mr. Muoi said. This is not the first time that the search for architectural accents has been mentioned. In 2019, the Ho Chi Minh City Real Estate Association (HoREA) also raised the idea of ​​building a bridge over the sea connecting Can Gio District (Ho Chi Minh City) and Vung Tau City (Ba Ria-Vung Tau Province). Sharing about this dream, Mr. Le Hoang Chau, President of HoREA, said the association was the unit that came up with the idea of ​​the first sea-crossing bridge in the 2017 Can Gio Development Planning conference at the Department of Planning- KT City. This is considered an iconic project like the Golden Gate Bridge – Golden Gate Bridge in San Francisco (USA). The work both addresses traffic needs and creates landscape for the area. The expert proposes to do prominent works of Ho Chi Minh City in Thu Thiem urban area. Photo: HOANG GIANG Time to look for a landmark project Talking to PV, architect Ngo Viet Nam Son said that if we look at the long-term until 2060, Ho Chi Minh City should have a high-tech landmark and use the “language” of the 21st century to show it. “We are having a project to develop Thu Duc City and in which there is the Thu Thiem center in Thu Duc City, the economic and financial center. In my opinion, the landmark project should be located in Thu Thiem and at least the highest in Southeast Asia or Asia ”- Mr. Son suggested. According to architect Ngo Viet Nam Son, referring to his experience when he joined the design and planning group of Shanghai East City, then Shanghai also raised the problem that there should be a prominent project. As for the bridge over the sea, Mr. Son said that it is difficult to be a typical project. As the Golden Gate Bridge (USA), it brings very high economic efficiency, greatly contributing to the development of the San Francisco Bay Area. The bridge over Can Gio sea does not reach such scale and significance. Raising his point of view, Dr. Pham Van Hung, Deputy Director of the Southern Sub-Institute of Transport Science and Technology, said that we must have a study of what is the cultural architecture of Ho Chi Minh City, urban characteristics of the city. How is Ho Chi Minh City. Then there is the idea of ​​building an iconic architecture. “Associations like Culture, Art, Architects… and experts, authorities should sit together to discuss to create a project that is a symbolic highlight for the city. We can discuss from now on so that 20-30 years later there will be such a big project ”- Mr. Hung said. According to Mr. Hung, it is time for Ho Chi Minh City to look for an architectural landmark in the future because we do not have such a convincing landmark project. Some prominent architectural works in the world Burj Khalifa Tower (Dubai Tower), this skyscraper is the tallest man-made structure in the world at the time of completion (2009), 829.8 m high. Sydney Opera House, located in Sydney Harbor – Australia, is one of the most remarkable buildings of the 20th century and is one of the most famous performing arts centers in the world. Eiffel Tower – France, built in 1889 in Paris, 324 m high, weighs 10,100 tons. This is the most popular tourist attraction in the world with more than 7 million people visiting each year. Empire State Building – USA, a skyscraper with a total height of 443 m, is a special highlight for the Manhattan skyline. The building is famous for its unique Art Deco design and is considered one of the cultural symbols of New York City.

Jewish cemetery in Prague (Czech Republic): Funeral was celebrated in this cemetery for nearly four centuries (1439-1787), with about 100,000 bodies buried. Over time, the cemetery became overwhelmed and it was decided to lift the ground, and to continue the burial of other bodies above.

Doll Island (Mexico): The abandoned island is home to about 1,000 old dolls. In 1950, Julían Santana Barrera (recluse on the island) started to collect dolls that were drifting in the ocean and hang them everywhere. Barrera said he did so because he wanted to bring peace to the soul of a drowned girl.

Hamashi Island (Japan): This place is famous after being chosen as the scene in the blockbuster movie Skyfall (James Bond). Built in 1887, this abandoned island was once a large-scale coal mine, with a population density of 5,259 people / km2.

Temple of the Human Skeleton (Portugal): Built in the 16th century, the temple contains 5,000 skeletons of monks who have passed away. The words Melior est die mortis die nativitatis (The day we die is happier than the day we are born) engraved on the roof is a highlight.

Suicide Forest (Japan): Located on Honshu Island, this place is famous for being the place many people choose to sacrifice. Today, the number of people coming here with suicidal thoughts ranks second in the world, just behind the Golden Gate Bridge (San Francisco, USA).

Abandoned Psychiatric Hospital (Parma, Italy): Brazilian artist Herbert Baglione has created many spooky works of art inside the hospital, making this place one of the most creepy in the world.

St. George (Czech Republic): This place was abandoned in 1968, after the tiled roof collapsed during a funeral. Sculptor Jakub Hadrava has put in his terrifying works, making the church a place no one wants to visit.

Catacombs of Paris (France): The network of underground tunnels in the capital of Paris is the resting place of about 6 million corpses from the 18th century. No one knows exactly how long this tomb is, only about 187. -300 km.

Centralia Town (Pennsylvania, USA): Since an underground fire broke out in 1981, people have left this town one after another.

Akodessewa Market (Togo): The market specializes in buying and selling enchantments and herbs. The people of West Africa believe in the magic and magic of the monkey, buffalo, and antelope skulls.

Disaster Island (Italy): It is rumored to be an isolated habitat for about 160,000 people suffering from the plague in Roman times. The story of Poveglie’s dark history became more widespread when a psychiatric hospital was built.

Hill of the Cross (Lithuania): Lithuania is a hill with more than 50,000 crosses brought and left behind by people. No one knows where this tradition started, only myths and mysteries circulate.

Kabayan (Philippines) mummified burial place: According to local people, mummies buried in Kabayan (1200-1500 years) still hold the soul of this land. The bodies above were preserved by complex mummification techniques, now carefully protected after nearly being stolen.

Overtoun Bridge (Scotland): A small, old bridge is completely no stranger to Scottish people after a strange event. In the middle of the 20th century, a series of dogs suddenly jumped down and committed suicide here. The lucky ones that were still alive continued to perform the above action when they were returned to the bridge.

Leap Castle (Ireland): It is believed that Leap is the most heavily cursed castle in the world. Previously, during the remodeling, construction workers discovered a secret dungeon located below the building. The number of human bones was found so much that it was filled with four trucks.

Chauchilla Cemetery (Peru): Discovered in 1920, archaeologists have found intact 700-year-old bones at Chauchilla. The last funeral was held here around the 9th century, with the bodies squatting in a squat position, and the fixed face shaped like a smile.

Tophet sacred land (Tunisia): The ancient Carthage religion has a tradition of sacrificing children. The chosen children were forbidden to weep during sacrifices, because it is believed that tears disfigured the ceremony. In 1921, archaeologists found dozens of urns containing remains of children and animals here.

City of the Dead (Russia): From the outside, Dargavs is a peaceful village in the northern state of Ossetia. But the small stone houses are actually ancient cemeteries, with hundreds of bodies buried and their personal belongings.

Hanging coffin in Sagada (Philippines): Located on Luzon island, Sagada village is a scary destination for even Filipinos.

It is customary to bury the dead by hanging a coffin on a cliff. The villagers believe that the higher the coffin is hung, the easier it is for the dead’s soul to reach heaven.