Road collapse near ancient bridge gives Florence that old sinking feeling. I believe that Antenna Engineers should have reviewed the erection procedure. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Antenna Engineering essentially stated that their job was to design and build the antenna, and Riggers was responsible for assembly. So, how did these decisions lead to the accident? The safety climate was quite different in the 1980’s compared to today. FDA authorizes Pfizer's COVID-19 vaccine for emergency use, SCOTUS rejects Texas bid to overturn election results in 4 states, Feds to buy additional 100 million doses of Moderna vaccine, Why some Black Americans are skeptical of a COVID-19 vaccine, Biden, Harris introduce team who will "deliver immediate relief", FKA twigs sues Shia LaBeouf over alleged sexual assault, Mayor slams U.S. A huge radio telescope in Puerto Rico that has long played a key role in astronomical discoveries collapsed on Tuesday, officials said. The Arecibo Observatory, made famous as the backdrop for a pivotal scene in the James Bond film "GoldenEye" and other Hollywood hits, had been shuttered since August after an auxiliary cable snapped and caused a 100-foot gash on the reflector dish. On August 10, 2020, an auxiliary cable pulled free from a support tower and crashed onto the dish below, tearing a 100-foot-long gash. This disaster raised ethical questions about the behind-the-scenes engineering decisions that were made by the parties involved. If the tower lost another cable, the engineer of record noted, an unexpected collapse would be … Without seeing contracts, the riggers were responsible for means and methods and were not prevented from hiring an engineer to check their rigging approach. At the time of concept, specification, design and construction of the project I was the VP of engineering of the corporation (LIN) that owned one of the FM stations KILT-FM. MORGAN MCFALL-JOHNSEN & AYLIN WOODWARD, BUSINESS INSIDER 3 DECEMBER 2020 The second-largest radio telescope in the world collapsed on Tuesday morning. It is impossible to make anything foolproof because fools are so ingenious. "If you asked me what the least likely thing to happen was, it's the tower coming down," Fedele said. To do less is irresponsible. In addition to these mistakes, the investigation found malfeasance: the u-bolts used by the rigging crew for the lug extensions, which were the actual point of failure in the accident, were rated by their manufacturer for twice the load they could actually withstand. Three Bell Media radio stations were knocked off the air Friday after a telecommunications tower in Fredericton toppled over in the morning, narrowly missing a curling club. ODN. This disaster would not likely have happened if Antenna Engineering had accounted for constructability considerations in their original design. They used bolts that they believed were of the proper strength, but they did not realize that the piece of steel they attached also added a large weight, which was spread through the U-bolts. They are among the tallest human-made structures. California Privacy/Information We Collect. Antenna Engineering had a responsibility to see the project through to completion. In my work as a Commissioning Engineer I often have to make a decision of correcting a design error in the field or pushing to have the design firm correct the error and resubmit construction drawings. Deborah Martorell, a meteorologist in Puerto Rico, tweeted early Tuesday: "Friends, it is with deep regret to inform you that the Arecibo Observatory platform has just collapsed. The 300-metre high mast came down following a fire in the building. The engineering design should have included stability of both the static, finally-assembled structure and every step of the erection. Antenna should have warned Riggers that they needed a qualified professional engineer to review the plan and design the system to safely handle the loading and stresses on the bolts. Three others on the ground were injured. They attached a long channel to the antenna section with several U-bolts. On the way down, the falling section sheered away guy wires and caused the entire structure to topple. These plans contained instructions for the placement of the antenna hoisting lugs, which provided attachment points for the lifting cables that would be used to remove the antenna sections from the delivery truck and to hoist the antenna into the air for the final assembly. Now-a-days a safety shut down would have been called and work would have been stopped until a revised lift plan developed. On December 7, 1982, engineer Andy Hurdack was recording the installation of a new 1800-foot tower that would serve the airwaves of the surrounding areas of Missouri, Texas. It was the second tallest structure ever built, being surpassed as the tallest by the Burj Khalifa tower in the United Arab Emirates, completed in 2009. The main collecting dish at Arecibo Observatory is among the world’s largest single-dish radio telescopes. It will take much longer for the dust to settle. 1:19. For 57 years, the observatory played a leading role observing deep space targets, bodies in the solar system and, using powerful lasers, the composition and behavior of Earth's upper atmosphere. TomoNews US. It took 17 seconds for Arecibo Observatory's massive radio telescope to crumble. Antenna Engineering responded that removing the baskets would void the warranty. Without Antenna’s consult, Riggers proceeded with their plan. The Arecibo Observatory's 900-ton platform, which sent and received radio waves and was suspended 450 feet (140 metres) in the air, crashed into the 1,000-foot-wide (300-metre-wide) disk below. The tower itself was designed and manufactured by Stainless Inc, the antenna (a 12 bay “cavity backed radiator”) designed by Harris Corporation aka Gates Radio had no such appurtenances you describe. The Gerbrandy Tower is used for directional radio services and for FM- and TV-broadcasting. If I correct the design error in the field, I take on the design, QA/QC, review, and implementation roles all at once. The engineer at Antenna Engineering refused to approve, or even review, the design. The KVLY-TV mast (formerly the KTHI-TV mast) is a 2,063-foot-tall (629 m) television-transmitting mast in Blanchard, North Dakota.It is used by Fargo station KVLY-TV channel 11.. Instead, after consulting with the firm, the engineer decided that by saying anything to Riggers, Antenna Engineering would assume liability in the case of an accident. It was the second largest radio telescope in the world and had been operating for more than half a century. The only sounds on Andy’s tape were his anguished, “Oh, my God!” and several seconds of the roaring collapse. Temporary construction is often a part of construction that has little or nothing to do with the final finished product. Browse more videos. Report. A crew of riggers with years of experience in similar projects was on-site during construction. A broadcasting tower in the Dutch town of Hoogersmilde has collapsed. Once lifted into position, Riggers proposed to reinstall the baskets after the section was in place. Operated by the National Science Foundation through the University of Central Florida, the iconic observatory was made up of a fixed 1,000-foot-wide dish antenna built into a bowl-like depression that reflects radio waves from space to a 900-ton instrument platform suspended 450 feet above by cables stretching from three support towers. See radio tower stock video clips. It was the first to detect indirect evidence for gravitational waves, the first to map Venus's surface, and the first to detect exoplanets. Total collapse during installation of 6-ton FM antenna on new 1800 ft. tower. Bulldozer operator sent running when water tower collapses near his vehicle. University … The collapse was not unexpected: Following two cable breaks in August and November, experts determined that the radio telescope was so structurally unsound that it had to be decommissioned. On December 7, 1982, engineer Andy Hurdack was recording the installation of a new 1800-foot tower that would serve the airwaves of the surrounding areas of Missouri, Texas. Riggers then requested the help of the chief engineer at Antenna Engineering to review their plans on lifting the antenna without removing the microwave baskets. As Andy So tragic, and so easily avoidable. Could people still be infectious after they're vaccinated for COVID-19? 0:53. A few weeks before the incident, Riggers approached Antenna Engineering and asked if it was possible to remove the microwave baskets on the top 100-foot section of the tower so they could lift the antenna into position. Try these curated collections . On August 10, 2020, an auxiliary cable pulled free from a support tower and crashed onto the dish below, tearing a 100-foot-long gash. The 1,000-foot-wide Arecibo Observatory in Puerto Rico, before damage led to its collapse. In my projects I am always thinking of how something can be built or serviced, how others might mess up, and how my design can mitigate or avoid mistakes by others. “It’s a very swampy area,” said Dave Lemke from the New Hope Public Works Department. It was an incredible loss of life for a wonderful bunch of riggers who I knew personally and the ultimate demise of Worldwide. While they were skilled tradespeople, the employees of Riggers were not Professional Engineers. Police were investing the collapse of a radio communication tower late Sunday night or early Monday morning in Contra Costa County that may be the work of vandals. A. see previous. Completed in 1963, the Arecibo Observatory was the largest single-dish radio telescope in the world until China's Five-hundred-meter Aperture Spherical Telescope, or FAST, began operations in … -- A worker has died after a TV tower … The guyed tower was damaged during a storm and was unsafe to climb. ", First published on December 1, 2020 / 8:34 AM. This engineering mistake compounded the risk created by proceeding with the assembly of the last tower section even though the presence of microwave receivers made the intended assembly procedure impossible. Radio masts and towers are typically tall structures designed to support antennas for telecommunications and broadcasting, including television.There are two main types: guyed and self-supporting structures. The second-largest radio telescope in the world collapsed on Tuesday morning. One killed in TV tower collapse near Fordland, Missouri. An argument could be made that Antenna Engineering has some culpability here, too. I generally argue that if the design firm makes the correction, the correction goes through the design firm’s QA/QC process and then it comes back to me for review and implementation. The erector of the tower was World Wide Tower (Dan Weberneck). Just because the antenna engineers are engineers and probably capable of doing the constructability analysis does not make it their responsibility any more than a chiller manufacturer’s engineer for their product makes them responsible for the installation of the chiller after it leaves the factory. Crews: tower collapse rare. A smaller local firm, Riggers, Inc., was contracted to raise and assemble the antenna. The investigation highlighted the following ethically-irresponsible decisions associated with this tragedy: lack of responsible engineering in jury-rigging the lug extensions without proper engineering review, the miscalculation of the mechanical load of the assembly method, and the u-bolt manufacturer’s misrepresentation of the u-bolt rating. I would think that if you design equipment that cannot actually be installed, that your responsibility should include selling a structure that must have engineering instructions on how to install. of 1,075. radio tower vector wireless towers cell towers vector gsm cell tower mobile communication tower tower tv radio tower sky tower antenna tower communication cell towers on remote. Riggers had a responsibility to procure an appropriately skilled engineer for the redesign. The collapse occurred about 10:30 A.M. on Saturday. The 900-ton platform suspended above the Arecibo Observatory in Puerto Rico came crashing down, a scenario that many engineers suspected might happen. To help construct the tower, the crew used a vertically-climbing crane mounted on the already-constructed portion of the tower to lift each new section. The antenna was designed and manufactured by Antenna Engineering, Inc., a moderately-sized local firm. Forgive me but I must note that this story is just about totally incorrect save the collapse of the tower. The event is vivid and current in my mind despite being 38 years ago and evokes an emotional response even today. In the end, seven people died as a result of this tragic and inadequate design flaw. The mast was in the final stages of construction. The Arecibo Observatory's 1,000-foot-diameter telescope collapsed at about 7:55 a.m. Tuesday in … Both cables were attached to the same support tower. TOWER COLLAPSE HURLS 5 MEN TO THEIR DEATH. The antenna was also “picked” by Worldwide utilizing ginpole which was secured and cantilevered to the top sections of the tower after being “jumped” there. 180' radio tower buckled as a 125' crane lowers it. They were worried, but not worried enough to consult with a professional. A ham radio enthusiast who took care of Manchester's public school grounds for 20 years was killed over the weekend when a radio tower he and a friend were dismantling collapsed. Antenna refused to modify the design, so the Riggers should have had the insight to do the obvious – hire an engineer to make the assembly work, then charge Antenna for non-performance. Then a main cable broke in early November, leading the National Science Foundation to declare just weeks later that it planned to close the radio telescope because the damage was too great. Save my name, email, and website in this browser for the next time I comment. The antenna section should have been designed for proper rigging possibly removing the the microwave baskets to reduce load and facilitate the lift. PEimpact – Recognizing the Impact of PEs I would concur with the culpability of Antenna Eng’g since they did not consider the microwave baskets in the constructability review it did with Riggers. It was the second tallest structure ever built, being surpassed as the tallest by the Burj Khalifa tower in the United Arab Emirates, completed in 2009. The shed was fully engulfed in flames and the heat from the fire compromised the base of the tower, causing it to collapse. The collapse … Everyone was too trusting. 23 comments 98% Upvoted Many scientists and Puerto Ricans mourned the news, with some tearing up during interviews. On Saturday at the station of K1EEE in Deerfield NH while taking down Mike’s tower for an upcoming sale of house and move, both K1EEE and K1JGA were severely injured when the tower collapsed (no details as yet). What if the design does not work? April 19, 2018 / 2:01 PM / CBS News FORDLAND, Mo. The 300-foot AM radio tower is located in a wetland next to a popular biking and jogging trail, which creates unique challenges for workers. ", Amigos es con profundo pesar comunicarles que acaba de colapsar la plataforma del Observatorio de Arecibo. 0:51. The second-largest radio telescope in the world is no more. Unfortunately K1JGA did not survive his injuries and K1EEE is in very bad shape and remains in the hospital. In a dramatic ending, the famous 1,000-ft Arecibo radio telescope in Puerto Rico collapsed this Tuesday at about 7:55 am local time. Copyright © 2020 CBS Interactive Inc. All rights reserved. While Riggers had seen and approved the initial plans drawn up by Antenna Engineering, they did not have the same technical expertise as the engineers at Antenna Engineering. The Arecibo Observatory's 900-ton platform, which sent and received radio waves and was suspended 450 feet (140 metres) in the air, crashed into the 1,000-foot-wide (300-metre-wide) disk below. During the initial design stages, Antenna Engineering proposed plans to Riggers for their approval, and Riggers approved the plans. 1:06. No injuries have been reported. Masts are often named after the broadcasting organizations that originally built them or currently use them. ©2019-2020 PEimpact.com - All rights reserved. They had an obligation to the public once they were aware of the risks. I believe that attaching the microwave baskets created additional bending moments that could not be resisted by the bolts’ strength. While the placement of the hoisting lugs allowed the antenna to be lifted horizontally off the delivery truck, the baskets interfered with the lifting cables when the antenna was rotated to a vertical position. The mast was in the final stages of construction. This example is a good reinforcement to push to have design errors corrected by the design firm and vetted through the entire process to avoid unilateral field changes that could lead to unintended consequences. Why they disavowed that responsibility rather than insisting on it is beyond me. If the engineers required that the antennas not be disturbed in the final piece then they were responsible for designing the change in erection procedures. I must point out that as an electrical RF engineer I only wrote the purchase specification for the electrical characteristics of the antenna and not its structural ones. This material may not be published, broadcast, rewritten, or redistributed. The Warsaw Radio Mast was a telecommunications tower located near the town of Gąbin, central Poland, and the world's tallest structure at 646.38 metres (2,120.7 ft) from 1974 until its collapse on 8 August 1991. When this was discovered the owner should have stopped work and demanded a viable assembly method be developed. The collapse occurred around 8am local time Tuesday that scientists stunned who relied on what was once the world’s largest telescope to uncover cosmic wonders in deep space. Senior Road Tower collapse near Houston in 1982. Playing next. Its total height was originally 382.5 metres, but in 1987 it was reduced to 375 metres. : This would seem to create 50% liability to the Antenna Engineering Firm. Since engineers are usually not adept at communication, it would be a good thing for the State Boards to provide a compendium of what if’s e.g. Search for "radio tower" in these categories. The Gerbrandy Tower consists of a concrete tower with a height of 100 meters on which a guyed aerial mast is mounted. / CBS/AP. While your description of the failure may be somewhat valid I recall the ultimate cause of the failure was a shackle connected to the load line and antenna. After the incident, an investigation found that when designing the makeshift lug extension, the rigging crew underestimated the load on the lugs by a factor of seven. A contact the engineer of record, if the engineer is not responsive As Andy recorded the raising of the last section of the tower, the supporting bolts suddenly failed, and the entire section fell, cascading a thousand feet to the ground. The design called for a three-legged tower, and as each new section was lifted, it was positioned and bolted onto the previous tower sections. I believe my responsibility does not end when I do my part right. December 1, 2020 / 7:14 PM A ham radio enthusiast who took care of Manchester's public school grounds for 20 years was killed over the weekend when a radio tower he and a friend were dismantling collapsed. Antenna Engineering should have required Riggers to have a 3rd party Professional Engineer design the modification and submit the procedure for review to Antenna. The Senior Road Tower Project, a part of KTXH-TV, operated the tower and several radio stations. Missouri City (AP) -- An 1,800 foot tall television tower toppled as workers were lifting an antenna onto its pinnacle Tuesday, hurling five men to their deaths. Senior Road tower group was a consortium of 9 FM stations serving the Houston area and had no connection to a television station. 7915 Cypress Creek Parkway, Suite 130, Houston, TX 77070. The Warsaw Radio Mast was a telecommunications tower located near the town of Gąbin, central Poland, and the world's tallest structure at 646.38 metres (2,120.7 ft) from 1974 until its collapse on 8 August 1991. Before its collapse, the observatory withstood hurricanes and earthquakes, and played central roles in movies like "GoldenEye" and "Contact. Further, when the issue was brought to the attention of Antenna Eng’g’s chief Engineer, he had a responsibility to stand with Riggers to identify a safe solution. Five … Boston medical conference led to 300,000 COVID-19 cases, Biden facing pressure to pick Rep. Deb Haaland as Interior Secretary, Biden to nominate Tai for trade rep and McDonough for veterans affairs, Second gentleman to teach entertainment law at Georgetown, Biden introduces his pick to lead Defense Department, NAACP calls on Biden to appoint a racial equity adviser, Biden to nominate Marcia Fudge to lead HUD, Biden vows to distribute 100 million vaccine doses within first 100 days. Crews: tower collapse rare The 300-foot AM radio tower is located in a wetland next to a popular biking and jogging trail, which creates unique challenges for workers. The Senior Road Tower Project, a part of KTXH-TV, operated the tower and several radio stations. © 2020 CBS Interactive Inc. All Rights Reserved. Several riggers fell 1000 feet to their death. pic.twitter.com/stJScy2Old. “Then the tower started falling. “Luckily an … Four tower riggers were on the tower. 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