The crane tipped, overturned and fell it’s full length on the south road, south side of the of the building. The crane damaging a historic herb cottage and crushing the cars parked belonging to the contractors working on the site. Luckily no one was seriously hurt though the crane operator was taken to the hospital with minor injuries.
Work force from the Baltimore/Washington, DC Area Office (BWAO) of the Occupational. Safety and Health Administration (OSHA) arrived at the scene within hours of the occurrence. The OSHA examination began not long after the fall and included interrogating with witnesses, taking photos and asking for specialised data from the general contractor. Upon the arrival of the occurrence, the OSHA Regional Administrator
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For the program to be viewed it requires a special software to download the data recordings which was purchased after several weeks of negotiations between the interested parties. The data recording of the last 16 minutes was viewed before the collapse that is:
10.44am: The crane was unloading the cantilevered steel beam on the cathedral roof positioned towards the north. During this time the boom was at an angle of 81 degrees to the horizontal and the jib was approximately 51 degrees. That angle was maintained until approximately four minutes before the collapse. After unloading the material, it started raining so the operator swung the crane counterclockwise to the west without carrying any load in about six minutes.
10.50am: The crane had no load, the jib was raised to approximately 63
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Because the crane operator denies it. The operation started again, the boom was maintained approximately 81 degrees.
10.58am: The jib was further lowered to 4 degrees and the boom to 70 degrees.
11.00am: the boom recorded approximately 64 degrees with jib at nearly horizontal.
It was said that certain information found in the data logger was inaccurate in regard to the the total support, working radius, the permissible load prior to collapse and the telescopic boom length. We do not know if this occurred due to the crane software or the flaws in the special software.
The crane operator says that due to a thunderstorm with heavy rain and lightning near the tip of jib his visibility was very limited and could not see it. He also argues that due to 12- part pulley it took approximately 20 minutes to telescope the boom inwards. Instead, he lowered lowered the boom to approximately 68 degrees and also the jib to near zero degrees to avoid lightning and thunderstorm. Then, he was waiting for the storm to pass by. As he was waiting, the crane began to overturn. For the investigation analysis it shows that if he could maintain the jib at 22 degrees and the boom at 81 degrees, the incident would have never happened, despite the raging
“When the lower side of the eye-bar failed, all the load was transferred to the other side of the eyebar, which then failed due to ductile overload. The joint was then held together only by three eye-bars, and another slipped off the pin at the center of the bearing, so the chain was completely severed” (Wikipedia). There was much pressure caused by the collapse on the lower side of the bridge that the upper side of the bridge collapsed right after. The bridge could not handle the weight caused by collapse as the eye-bars slipped off the pins and ended up in the Ohio River. “The collapsed bridge needed to be thoroughly inspected before the cause could be determined.
An Occurrence at Owl Creek Bridge is split into three sections. In the first section, Bierce describes in detail the situation, a youn...
In a remarkably short amount of time after the crash hundreds of people were on the scene doing the initial investigative work that would eventually lead to finding the crash's cause as well as the perpetrators of the offense. Over one thousand police officers were dispensed on to the scene, over six hundred military personnel, morticians from the Royal Air Force, and teams of investigators from the Federal Bureau of Investigation, the Central Intelligence Agency, the National Transportation Safety Board, the U.S. State Department, the Federal Aviation Agency, the Boeing Company, and Pratt and Whitney. These people started surveying a land area that was seemingly too large to negotiate, 845 square miles. The United States also moved some of their extremely sophisticated spy satellites over southern Scotland to give the investigating teams high-resolution reconnaissance photographs of the area being searched.
Site-specific safety concerns I have identified at the work site have been fall hazards from a hydraulic-powered cranes with a telescoping boom mounted on truck-type moving material and hoisting structures
For almost as long as civilizations began they have been fighting against each other. Often times these wars come down to who has the better military equipment. When one army creates an elite war machine another army is sure to soon copy or improve it. For example the U.S. Army Signal Corps purchased the first ever military aircraft in 1902 (Taylor). Two years later the Italians were also using aircrafts. The trebuchet catapult is no exception; it was one of the most destructive military machines of its time (Chevedden, 2000). A trebuchet works by using the energy of a falling counterweight to launch a projectile (Trebuchet). In this research paper I intend to explain the history and dynamics of a trebuchet catapult.
Firefighters extinguished the fire and then shut down the locomotive. When the locomotive was shut down, no other locomotive was started. This meant that the air compressor was left off while the air brakes were slowly leaking. The train’s “reset safety control” system, which sets the entire train’s brakes should the engine fail, was not wired to go off. About an hour after firefighters shut down the train, the pressure in the air brakes had dropped low enough to allow the train to start rolling. The derailed 17 minutes later when it was 11.6 kilometers (7.21 mi)
Source E displays a large wire fence that collapsed as well as damaged chairs and umbrellas sprawled about. Furthermore, Source F shows two images of the destruction of a property. The cream coloured steel fence has been completely demolished, along with a wooden structure. A rusted steel structure (in the second image) is laying on a horizontal angle and pieces of tree trunks are also clustered into a dishevelled pile.
Archers weren’t the only badasses of the battlefield; other destructive weapons also created terror in the hearts of the enemy. Every city and castle feared the appearance of siege engines, especially the devastating counterweight trebuchet. This powerful gravity-driven engine could reduce a city’s walls to rubble. Infantry and cavalry alike feared the awesome pike formations of the Swiss and Landsknecht armies. Essentially a really long spear, the pike’s very simplicity provided a remarkable tactical versatility in many medieval battles.
OSHA has been criticized on both ends, by industry for being too strict, and by unions for not being strict enough. In the 1980s, OSHA had instituted a policy that would exempt some workplaces from a complete inspection if they had a lower than average injury rate. However, that policy was abandoned when an employee died in a workplace that OSHA had not fully inspected. OSHA has implemented new procedures that have set higher penalties and increased the maximum fine for all types of infractions. OSHA may inspect a workplace at any time.
Nielsen, Ronald P. OSHA Regulations And Guidelines : A Guide For Health Care Providers. Albany, NY: Delmar,
The Tacoma Narrows Bridge is perhaps the most notorious failure in the world of engineering. It collapsed on November 7, 1940 just months after its opening on July 1, 1940. It was designed by Leon Moisseiff and at its time it was the third largest suspension bridge in the world with a center span of over half a mile long. The bridge was very narrow and sleek giving it a look of grace, but this design made it very flexible in the wind. Nicknamed the "Galloping Gertie," because of its undulating behavior, the Tacoma Narrows Bridge drew the attention of motorists seeking a cheap thrill. Drivers felt that they were driving on a roller coaster, as they would disappear from sight in the trough of the wave. On the last day of the bridge's existence it gave fair warning that its destruction was eminent. Not only did it oscillate up and down, but twisted side to side in a cork screw motion. After hours of this violent motion with wind speeds reaching forty and fifty miles per hour, the bridge collapsed. With such a catastrophic failure, many people ask why such an apparently well thought out plan could have failed so badly?(This rhetorical question clearly sets up a position of inquiry-which iniates all research.) The reason for the collapse of the Tacoma Narrows Bridge is still controversial, but three theories reveal the basis of an engineering explanation. (Jason then directly asserts what he found to be a possible answer to his question.)
"An Occurence at Owl Creek Bridge." Classic Reader. 2009. BlackDog Media, Web. 2 Dec 2009. .
In the early morning hours on January 17th, 1994 a very violent tremble took place across Los Angeles, California area that left fifty-seven people dead, more than 7,000 injured, more than 20,000 homeless and left over 40,000 buildings damaged. Around 4:30 a.m. a horrific 6.7 magnitude earthquake, that tested building codes and earthquake-resistant construction, shook Los Angeles, San Bernardino, Ventura, and Orange Counties with the most intense damage occurring in Sherman Oaks and Northridge. The earthquake caused several bridges and overpasses to collapse closing sections of the Santa Monica Freeway, Simi Valley Freeway, Golden State Freeway, and the Antelope Valley Freeway. There were also several fire outbreaks throughout the San Fernando Valley, Malibu, and Venice area because of underground gas lines that had been ruptured during the earthquake that caused additional damage.
The examination of the employees by medical inspector or by a physician licensed to practice medicine.
Incident/accident investigations that focus on identifying and correcting root causes, not on finding fault or blame, also to improve workplace morale and increase productivity, by demonstrating an employer’s commitment to a safe and healthful workplace. Incident/accident investigations are often conducted by a supervisor but to be most