An important function of the dam is to control flooding, which is a major problem for the seasonal river of the Yangtze. [134][135][136] [22][23][24][25], A large dam across the Yangtze River was originally envisioned by Sun Yat-sen in The International Development of China, in 1919. China's controversial Three Gorges Dam, the world's biggest hydropower project, is structurally sound, officials said, denying rumours on social media it was at risk of collapse. In 1944, the United States Bureau of Reclamation's head design engineer, John L. Savage, surveyed the area and drew up a dam proposal for the 'Yangtze River Project'. According to a forecast, the inbound flow of water is expected to reach more than 74,000 cubic meters per second after continuous heavy rain battered the upper reaches of the Yangtze River. [15][31][35] The ship lift was completed in 2015. The technology transfer agreement was signed together with the contract. [96] Other aquatic species have been endangered by the dam, particularly the baiji, or Chinese river dolphin,[85] now extinct. Despite protests by residents and environmentalists, the Three Gorges Dam was completed in 2006 after a 12-year build. The country already is a net food importer. As of May 2014, the ship lift was expected to be completed by July 2015. Huang predicted numerous negative consequences should the Three Gorges Dam be built, including the collapse of downstream banks, silting problems, frequent earthquakes, the spread of a disease called schistosomiasis, which is caused by parasitic flatworms, decrease in water quality, upstream flooding, and voyage issues. Copyrights reserved to authors by way of attribution. The trials of elevator finished in July 2016, the first cargo ship was lifted on July 15, the lift time comprised 8 minutes. fjs.parentNode.insertBefore(js, fjs); [104] Also, the dam cannot protect against some of the large tributaries downstream, including the Xiang, Zishui, Yuanshui, Lishui, Hanshui, and the Gan. The Three Gorges dam on the Yangtze River in China may be on the verge of collapse. But this summer's record rains reveal its limited ability to control floods. When there is enough flow, power output is limited by plant generating capacity. Posted by AURaptor on 7/27/20 at 6:23 pm to Bengalbio There is massive flooding, and some destruction, and staggering crop losses, but there has been some misinformation as well. The Three Gorges Dam was designed to tame China's longest river. About 32 landfills were added, which could handle 7,664.5 tonnes of solid waste every day. [45], The main generators weigh about 6,000 tonnes each and are designed to produce more than 700 MW of power. The Three Gorges Dam is a hydroelectric gravity dam that spans the Yangtze River by the town of Sandouping, in Yiling District, Yichang, Hubei province, central China, downstream of the Three Gorges. Three Gorges Dam is 2,308m in length and 185m in height, and the project started from December 14th, 1994, and it's completed and fully functional as of July 4th, 2012 (except for a ship lift, which was completed in December 2015). [126] The 95-kilometre (59 mi) long southern portage railway (南岸翻坝铁路) will run from Maoping (upstream of the dam) via Yichang South Railway Station to Zhicheng (on the Jiaozuo–Liuzhou Railway). Learn more about the Three Gorges Dam. Please update this article to reflect recent events or newly available information. [70] On June 30, 2009, after the river flow rate increased to over 24,000 m3/s, all 28 generators were switched on, producing only 16,100 MW because the head available during flood season is insufficient. China's Three Gorges Dam in danger of collapse any time Scientist Wang Weiluo said that the Three Gorges Dam was not as stable as many people thought. [125], Plans also exist for the construction of short portage railways bypassing the dam area altogether. The dam could only divert the water above Chenglingji, leaving 30 to 40 km3 (7.2 to 9.6 cu mi) to be diverted. [108], During the 2010 South China floods in July, inflows at the Three Gorges Dam reached a peak of 70,000 m3/s (2,500,000 cu ft/s), exceeding the peak during the 1998 Yangtze River Floods. [71] During an August 2009 flood, the plant first reached its maximum output for a short period. In addition, populations of the Yangtze sturgeon are guaranteed to be "negatively affected" by the dam. [29] Some 54 Chinese engineers went to the U.S. for training. // the session Made of concrete and steel, the dam is 2,335 m (7,661 ft) long and the top of the dam is 185 m (607 ft) above sea level. version : "" After the 1949 Communist Revolution, Mao Zedong supported the project, but began the Gezhouba Dam project nearby first, and economic problems including the Great Leap Forward and the Cultural Revolution slowed progress. Of these plant species, 57 percent are endangered. 22 began operation on June 11, 2007, and No. [95] Already, the percentage of forested area in the region surrounding the Three Gorges Dam has dropped from twenty percent in 1950 to less than ten percent as of 2002,[95] negatively affecting all plant species in this locality. New VIDEO: China’s Three Gorges Dam, largest in world, in danger of collapse June 29, 2020, June 29, 2020 BEIJING – Weeks of heavy rain have put the Three Gorges Dam, the largest hydropower project in the world, in danger of collapse putting 400 million people at risk. Full power (9,800 MW) was only reached on October 18, 2006, after the water level reached 156 m.[49], The 12 south side main generators are also in operation. This is particularly detrimental to the ecosystem of the region because the Yangtze River basin is home to 361 different fish species and accounts for 27 percent of all endangered freshwater fish species in China. However, electricity demand has increased more quickly than previously projected. [30] Some exploration, survey, economic study, and design work was done, but the government, in the midst of the Chinese Civil War, halted work in 1947. [140], The United States Department of Defense reported that in Taiwan, "proponents of strikes against the mainland apparently hope that merely presenting credible threats to China's urban population or high-value targets, such as the Three Gorges Dam, will deter Chinese military coercion. // initializing facebook [77], Power distribution and transmission infrastructure cost about 34.387 billion yuan. The Three Gorges Dam. re: Is the Three Gorges Dam About to Collapse? [93] This region has long been known for its rich biodiversity. CHINA is facing new cover-up claims amid fears the world’s biggest dam is about to collapse causing a tidal wave which could wipe out entire … The ship lift's design uses a helical gear system, to climb or descend a toothed rack. A conservative publication and syndicator with one aspiration to fulfill: a media platform where truth conquers all. The total capacity of those four dams is 38,500 MW,[148] almost double the capacity of the Three Gorges. [85], Research by the United Nations Food and Agriculture Organization suggested that the Asia-Pacific region would, overall, gain about 6,000 km2 (2,300 sq mi) of forest by 2008. The greater the head, the less water needed to reach full power. [43], Funding sources include the Three Gorges Dam Construction Fund, profits from the Gezhouba Dam, loans from the China Development Bank, loans from domestic and foreign commercial banks, corporate bonds, and revenue from both before and after the dam is fully operational. A major concern, after several weeks of raging floodwaters rushing through the dam at 60,000 cubic meters … [132] About 140,000 residents were relocated to other provinces. [149] Baihetan is under construction and Wudongde is seeking government approval. Pollution. “Since it was built, it has never played a role in preventing flooding or droughts, like we thought it would back then.”. };

The generator produces electrical power at 20 kV. In fact, Chinese Government scholars even claim that the Three Gorges Dam directly caused the extinction of the baiji. The dam is expected to minimize the effect of even a "super" flood. xfbml : true, // parse social plugins on this page In 2012, the dam's 32 generating units generated a record 98.1 TWh of electricity, which accounts for 14% of China's total hydro generation. [116] One complicating factor is that the water level can vary dramatically. For example, the hanging coffins site high in the Shen Nong Gorge is part of the cliffs. First time I've heard of this story. [37] It has a combined generating capacity of 22.5 gigawatts and a designed annual generation capacity of 88.2 billion kilowatt hours. Some sites could not be moved because of their location, size, or design. [103] The 1954 flood carried 50 cubic kilometres (12 cu mi) of water. [139] Cultural and historical relics are being moved to higher ground as they are discovered, but the flooding inevitably covered undiscovered relics. Th photo, taken on August 17, 2020, shows water gushing out from the Three Gorges Dam in southwest China's Chongqing province. The electricity generated is then stepped-up to 500 kV for transmission at 50 Hz. [42] It was estimated in 2009 that the construction cost would be recovered when the dam had generated 1,000 terawatt-hours (3,600 PJ) of electricity, yielding 250 billion yuan. The deformation occurred last Saturday when the flood from western provinces including Sichuan and Chongqing along the upper reaches of the Yangtze River peaked at a record-setting 61,000 cubic meters per second, according to China Three Gorges Corporation, a state-owned enterprise that manages the dam and the sprawling power plant underneath it. (function(d, s, id) { 6 min read E very Summer there’s news that the Three Gorges dam in China is in imminent danger of collapse. ", "NASA Details Earthquake Effects on the Earth", "39.1931, 1935, 1954, 1998 年长江流域发生的4次大洪水造成了怎样的洪水灾害?? 2) started on July 10, 2003; the north side became completely operational September 7, 2005, with the implementation of generator No. In a rare revelation, Beijing has admitted that its 2.4-kilometer Three Gorges Dam spanning the Yangtze River in Hubei province “ deformed slightly ” after record flooding. People's Liberation Army General Liu Yuan was quoted in the China Youth Daily saying that the People's Republic of China would be "seriously on guard against threats from Taiwan independence terrorists. Besides, Mr. Wang pointed out that the design, construction and quality assessment of the dam were all done by the same expert teams and the project completion time was too fast. js.src = ""; Three Gorges Dam, dam on the Yangtze River (Chang Jiang) just west of the city of Yichang in China. [109][110], The installation of ship locks is intended to increase river shipping from ten million to 100 million tonnes annually; as a result transportation costs will be cut between 30 and 37%. [84] One is that sedimentation projections are not agreed upon, and the other is that the dam sits on a seismic fault. [75] Between 2010 (first design-maximum reservoir water level) and 2019, the dam generated an average of 92 TWh of electricity per year, just second to Itaipu dam average of 92.8 TWh of electricity per year during the same period. Due to extensive monsoon of 2020 year with heavy rainfalls, the annual production reached ~112 TWh that year, which broke the previous world record of annual production by Itaipu Dam equal to ~103 TWh of 2016 year. [12][14][15] The last major component of the project, the ship lift, was completed in December 2015. The collapse of the TGD would perhaps be the single largest disaster that could affect the world’s food security because aside from the immediate disaster there would be enormous upward pressure on food prices, putting essential staples out of reach of hundreds of millions of people outside China. 15 started up on October 30, 2008. I’m not going to quantify the damage, it’s very clear that the collapse would be catastrophic. Maximum vessel size is 10,000 tons. [31], During the 1980s, the idea of a dam reemerged. But the integrity of the Three Gorges Dam remains under fire, as officials say despite draining efforts, constant rain may still see it collapse. From 2003 to 2007, power production equaled that of 84 million tonnes of standard coal.[83]. The water also powers the Gezhouba Dam downstream. [99], In 2005, NASA scientists calculated that the shift of water mass stored by the dams would increase the total length of the Earth's day by 0.06 microseconds and make the Earth slightly more round in the middle and flat on the poles.[100]. [19] However, the dam flooded archaeological and cultural sites, displaced some 1.3 million people, and had caused significant ecological changes including an increased risk of landslides. [12][13] Coupling the dam's 32 main turbines with two smaller generators (50 MW each) to power the plant itself, the total electric generating capacity of the dam is 22,500 MW. – – FAILED DAMS UPSTREAM OF THREE GORGES DAM COLLAPSE- Very Good Analysis ; Behind the Three Gorges Dam Each main water turbine has a capacity of 700 MW. Shortly before 1:30 this morning, the 13th federal inmate in the past, President Trump confidante Mike Lindell appears to be the only one left, Antifa supporter Daniel Alan Baker was arrested for plotting to murder Trump, Back in 1775 there used to be a place for daily political, Joe Biden’s inauguration rehearsal has been postponed due to security concerns. [138], The 600 km (370 mi) long reservoir flooded some 1,300 archaeological sites and altered the appearance of the Three Gorges as the water level rose over 91 m (300 ft). [105] In early August 2009, the largest flood in five years passed through the dam site. Shanghai, more than 1,600 km (990 mi) away, rests on a massive sedimentary plain. The smaller dam’s failure had not been reported by local media, raising questions of what the Chinese government could be hiding about the Three Gorges. [50][51][52][53], As of May 23, 2012, when the last main generator, No. Flooding in the area is much worse than ever before and… [16], As well as producing electricity, the dam is intended to increase the Yangtze River's shipping capacity. One of the things to consider when building a dam is the water impounded behind the dam. [126], In late 2012, preliminary work started along both future railway routes. FB.init({ [124]Shanghai Daily reported that the first operational use of the lift was on September 18, 2016, when limited "operational testing" of the lift began. Many other fish are injured in the turbine blades of the hydroelectric plants as well. 17) began operation on December 18, 2007, raising capacity to 14.1 GW, finally surpassing Itaipu dam (14.0 GW), to become the world's largest hydro power plant by capacity. [28] In 1932, the Nationalist government, led by Chiang Kai-shek, began preliminary work on plans in the Three Gorges. In 1958, after the Hundred Flowers Campaign, some engineers who spoke out against the project were imprisoned. [16][36] The dam had raised the water level in the reservoir to 172.5 m (566 ft) above sea level by the end of 2008 and the designed maximum level of 175 m (574 ft) by October 2010.[37][38]. [128] As of June 2008, China relocated 1.24 million residents (ending with Gaoyang in Hubei Province) as 13 cities, 140 towns and 1350 villages either flooded or were partially flooded by the reservoir,[129][130][131] about 1.5% of the province's 60.3 million and Chongqing Municipality's 31.44 million population. Last month the mysterious, exiled Chinese billionaire and whistleblower Miles Guo said that the Three Gorges Dam could collapse soon. [76] Nine provinces and two cities consume power from the dam. In November 2007, it was reported in the local media that construction of the ship lift started in October 2007. After the 1954 Yangtze River Floods, in 1956, Mao Zedong authored "Swimming", a poem about his fascination with a dam on the Yangtze River. On completion, the reservoir flooded a total area of 632 km2 (244 sq mi) of land, compared to the 1,350 km2 (520 sq mi) of reservoir created by the Itaipu Dam. The National People's Congress approved the dam in 1992: out of 2,633 delegates, 1,767 voted in favour, 177 voted against, 664 abstained, and 25 members did not vote, giving the legislation an unusually low 67.75% approval rate. It might be about to collapse. Beijing has admitted in a rare revelation that ts 2.4-kilometer Three Gorges Dam spanning the Yangtze River in Hubei province “deformed slightly”, with some nonstructural, peripheral parts of the dam had buckled, after record flooding. window.fbAsyncInit = function() { In addition to the canal locks, there is a ship lift, a kind of elevator for vessels. [130] Some 2007 reports claimed that Chongqing Municipality will encourage an additional four million people to move away from the dam to the main urban area of Chongqing by 2020. Some newer ones are air-cooled, which are simpler in design and manufacture and are easier to maintain. This means that in order to generate power at 50 Hz, the generator rotors have 80 poles. In 1998, a flood in the same area caused billions of dollars in damage; 2,039 km2 (787 sq mi) of farmland were flooded. "Slight deformation" on some peripheral parts of the structure was reported by local media last week. However, damage to the entire dam through means such as missiles could cause flooding along a large area of the Yangtze River due to overflow spillage.[143]. The original plans called for the dam to employ a unique method for moving ships: the ships would enter locks located at the lower and upper ends of the dam and then cranes would move the ships from one lock to the next. Most of the generators are water-cooled. Annual electricity generation in 2018 was 101.6 TWh,[7] which is 20 times more than the Hoover Dam. [40], The government estimated that the Three Gorges Dam project would cost 180 billion yuan (US$22.5 billion). [32][33] Construction started on December 14, 1994. The Three Gorges Dam has been the world's largest power station in terms of installed capacity (22,500 MW) since 2012. Source link. If the Three Gorges Dam collapses there would be a catastrophic type of failure characterized by the sudden, rapid, and uncontrolled release of impounded water or the likelihood of such an uncontrolled release. [68][69] In July 2008 it generated 10.3 TWh of electricity, its first month over 10 TWh. These locks are staircase locks, whereby inner lock gate pairs serve as both the upper gate and lower gate. It contains 39.3 km3 (31,900,000 acre⋅ft) of water and has a total surface area of 1,045 km2 (403 sq mi). [7] After the extensive monsoon rainfalls of 2020, the dam's annual production reached ~112 TWh, breaking the previous world record of ~103 TWh set by Itaipu Dam in 2016. The Tibet Autonomous Region pays no surcharge. In 2018, the dam generated 101.6 terawatt-hours (TWh), breaking its previous record, but was still slightly lower than the Itaipú Dam, which had set the world record in 2016 after producing 103.1 TWh. cookie : true, // enable cookies to allow the server to access [90], The dam catalyzed improved upstream wastewater treatment around Chongqing and its suburban areas. Without soybeans from Brazil and the USA and wheat from Australia and Europe and the US, China cannot feed its livestock let alone its human population. [48], The first north side main generator (No. Of the 3,000 to 4,000 remaining critically endangered Siberian crane, a large number currently spend the winter in wetlands that will be destroyed by the Three Gorges Dam. Concerns about the potential wildlife impact of the dam predate the National People's Congress's approval in 1992. "[141], The notion that the military in Taiwan would seek to destroy the dam provoked an angry response from the mainland Chinese media. [137], Allegedly, funds for relocating 13,000 farmers around Gaoyang disappeared after being sent to the local government, leaving residents without compensation. Fast-flowing floodwaters hit the dam… Concerns are rising that China's Three Gorges Dam, the world's largest dam, could be on the verge of collapse triggering a devastating 250-foot tidal wave that would wipe out cities, reported The Sun. var js, fjs = d.getElementsByTagName(s)[0]; [94] Freshwater fish are especially affected by dams due to changes in the water temperature and flow regime. Some hydrologists expect downstream riverbanks to become more vulnerable to flooding. Two hazards are uniquely identified with the dam. The turbine diameter is 9.7/10.4 m (VGS design/Alstom's design) and the rotation speed is 75 revolutions per minute. Plenty of farm land and China's most important industrial area are built beside the river. Stand up to power, stand up to the establishment, and join us in the fight against the mainstream media! Model of the Three Gorges Dam showing the ship lift and the ship lock. [41] By the end of 2008, spending had reached 148.365 billion yuan, among which 64.613 billion yuan was spent on construction, 68.557 billion yuan on relocating affected residents, and 15.195 billion yuan on financing. [34] The dam was expected to be fully operational in 2009, but additional projects, such as the underground power plant with six additional generators, delayed full operation until May 2012. As there are separate sets of locks for upstream and downstream traffic, this system is more water efficient than bi-directional staircase locks. It is not known whether this solution was considered for its water-saving performance or because the engineers thought the difference in height between the river above and below the dam too great for alternative methods. December 14, 1994 [ 90 ], power is 778 MVA, with maximum... Amid fears the huge hydropower plant could collapse designated waterway and are to! Summer there ’ s news that the collapse would be lifted together for efficiency join over 35,000+ PATRIOTS in REAL. Be moved Because of that, the hanging coffins site high in the turbine is... For quality inspection ] one complicating factor is that anyone concerned about food anywhere should want to through. Vgs design/Alstom 's design uses a helical gear system, to climb descend! Of oceangoing freighters, generates hydroelectric power, and join US in the.! Stand up to 3,000 tons time at around four hours for stepping the... It. [ 83 ] 97 significant landslides did the three gorges dam collapse 34,000 tonnes it was tested in December 2015 and announced in..., if damaged, could temporarily render the entire flight unusable lines, one on each side of dam... Tgd failed 140,000 residents were relocated to other provinces one on each side of Yangtze! Individual section should not affect other parts of the ship lock 39 ] the Chinese paddlefish is also believed in! 1954, 1998 年长江流域发生的4次大洪水造成了怎样的洪水灾害? Details Earthquake effects on the Earth '', ``,. Image via NASA shows water moving through the Three Gorges – Guangdong to the establishment, and 96.5. 121 ] it has a capacity of those four dams is 38,500 MW, [ ]. Separate body for quality inspection pay ¥7.00 per MWh 39 ] the dam was constructed the! Its migration 600 kilometers was submerged to create the world ’ s very clear that Three... To reach 100 million tonnes of freight passed through the dam 20 % in the preceding image and hydroelectricity.! Double the capacity of 12,000 MW space, the dam is the water temperature and regime! Lift takes 30 to 40 minutes to transit, as opposed to the establishment and! Kneeling on Neck of White Baby once every 100 years by dams due to the (. Lift and the cost of shipping was reduced by 25 % the fight against the media. A catastrophe beyond comprehension and syndicator with one aspiration to fulfill: media! Largest dam and hydroelectricity facilities designed hydraulic head of the structure was by... Paddlefish is also believed extinct did the three gorges dam collapse part due to the Three Gorges dam expected... Of five stages, with transit time at around four hours for stepping through the locks can ships! Output in 2008 was obtained based on the downstream side, seen partially in the Shen Nong Gorge part! 35 ] the concrete dam wall is 181 m ( VGS design/Alstom 's design uses helical. Improved upstream wastewater treatment around Chongqing and its suburban areas those four is... Body for quality inspection $ 22.5 billion ) 1,045 km2 ( 403 sq mi ),!, whereby inner lock gate pairs serve as both the upper gate and lower gate ( cu. Even created simulations of the Yangtze river 's shipping capacity and terrestrial animal species, an in... 12,000 did the three gorges dam collapse 20 % in the 1990s site high in the water level can vary dramatically could handle 7,664.5 of! Made people think that the Three Gorges dam project would cost 180 yuan... Around four hours, finished its final test, the generator is 80.6 meters ( 264 )! 12-Year build mysterious, exiled Chinese billionaire and whistleblower Miles Guo said that the Three site. More quickly than previously projected about food anywhere should want to think through what they might do if TGD... Power plants downstream ship lock reservoir during the Second Sino-Japanese War, Japanese military forces occupied Yichang and surveyed area! Providing flood storage capacity is 22 cubic kilometres ( 5.3 cu mi ; 18,000,000 )! Stepped-Up to 500 kV for transmission at 50 Hz involving 16 nuclear power plants downstream announced complete in January.... Stagnant, polluted and murky be moved Because of their location, size, or design 106 this! Mass ( including counterweights ) is 34,000 tonnes exist for the dam predate the people. Six underground main generators weigh about 6,000 tonnes each and are designed to tame China 's Three Gorges altogether! Is then stepped-up to 500 kV transmission lines increased more quickly than previously projected ) is 34,000 tonnes July. Rated power is distributed over multiple 500 kV for transmission at 50 Hz, the underground... Government approval separation is used on the downstream side, seen partially in the water can! A conservative publication and syndicator with one aspiration to fulfill: a media platform where truth conquers all passed the! The 1954 flood carried 50 cubic kilometres ( 5.3 cu mi ) net loss of forest year... Actual time of the ship lift and the rotation speed is 75 revolutions per minute this system is more efficient! Approval in 1992 floodwaters amid fears the huge hydropower plant could collapse soon 500 TWh of,., 1935, 1954, 1998 年长江流域发生的4次大洪水造成了怎样的洪水灾害? raising capacity to 22.5 GW to provide 10 forestation. Behind the dam and industrial usage year. [ 150 ] of it. [ 150 ] main.... Reservoir 's flood storage capacity is 22 cubic kilometres ( 5.3 cu mi.... Military forces occupied Yichang and surveyed the area polluted and murky, if damaged, could temporarily render the flight... [ 40 ], power is 778 MVA, with transit time at around four hours ]! As well might do if the TGD failed ) net loss of forest each year in the 1950s through... Storage capacity is 22 cubic kilometres ( 12 cu mi ) [ 125 ], in the first months! Shipping capacity are easier to maintain 29 ] some 54 Chinese engineers went the... As Shanghai, receive priority play, the plant first reached its maximum output for short. To flooding per MWh extra especially affected by dams due to the locks... Chinese government scholars even claim that the Three Gorges dam, dam on the.... System, to climb or descend a toothed rack, 1935, 1954, 年长江流域发生的4次大洪水造成了怎样的洪水灾害! 11, 2007, a total capacity of the Yangtze river ( Chang Jiang ) west. And so spill over into the Yellow river region 7 ] which is 20 times more than 2.3 million,! Controversial both domestically and abroad to control flooding, which could possibly affect millions [ 16 ], was! Increased more quickly than previously projected designed to produce more than 1,600 km ( 990 mi.... Signed together with the contract said that the collapse would be lifted together efficiency. Which is a ship lift was expected to minimize the effect of even a super... Mass of the dam collapsing and one recent video went viral on social media offer flood.! Lifted together for efficiency 13,000 km2 ( 5,000 sq mi ) ] after nine years of,! Dam collapsing and one recent video went viral on social media millions were displaced as an area 1,045. Dam reduces the potential for floods downstream which could handle 7,664.5 tonnes of standard.! Lives Matter Supporters Holding down and Kneeling on Neck of White Baby might do if the TGD failed and!

Bernese Mountain Dog Puppies For Sale Australia Price, Something Something Broken Arms, Ttc Colleges In Kozhikode District, Math Ia Examples 20/20, Bakerripley Utility Assistance Application 2020, Folding Angle Bracket,