The Thames Barrier is a structure of regulation of the flow of the river Thames. It was built between 1974 and 1982 in Woolwich Reach. The barrier was officially opened on 8 May 1984 by Queen Elizabeth II. It is the second-largest work of flood protection after that of Maeslantkering in Netherlands. Located at the south of London, the Thames Barrier was realized after a long process of design and construction, it protects London from the danger of flooding tide.
Flooding is when unusually high amounts of rain lands on an already saturated area or has a high water table. The river systems cannot remove the water as quickly as it arrives therefore resulting in an overflow of water which finds other ways of escaping. Thereby resulting in flooding of flat areas or valleys. As an example in 2010 the Philippines experienced a flood in which 452 999 people were displaces, from which 68 died and it resulted in $20,396,723 in damages. This flood was induced by a typhoon that had hit the mountain ranges afterwards and led to surface run off.
(live science.com) One of the most memorable rogue wave occurrences was on October 30, 1991. It was called the perfect storm. According to CNN.com, an enormous extra tropical low is creating havoc along the entire Eastern Atlantic Seaboard in this infrared image at 1200 UTC (0700 EST) on October 30, 1991. Labeled the "perfect storm" by the National Weather Service, the storm sank the sword fishing boat Andrea Gail, whose story became the basis for the currently best-selling novel "The Perfect Storm" by Sebastian Junger. Ocean waves peaked at 100 feet, the height of 10-story buildings.
(i) Description of Disasters: Hurricane Katrina is said to have been the most costly and deadliest hurricanes in U.S history, resulting in $81.2 billion dollars in damage and 1836 casualties6. The hurricane made landfall in New Orleans in the early morning of August 29th, 2005 as a Category 3 or 4 storm. The heavy rains that were produced as the hurricane moved inland, along with the poorly designed levees, caused all 56 levees in New Orleans to fail, resulting in freshwater flooding of 80% of the city15. Hurricane Katrina devastated an area over 160 km from the storm’s eye, which included parts of Mississippi, Alabama, Florida and most importantly, Louisiana6. It originally formed off the Bahamas, on August 23rd, as a Tropical Depression and strengthened to a Category 1 storm once it made landfall in Florida on August 25th.
The Strap must be attached to the top plate of the wall frame or embedded in the bond beam in at least one place. D. Double Wrap Both Metal Straps must be secured to every rafter/truss with a minimum of 3 nails, wrapping over and securing to the opposite side of the rafter/truss with a minimum of 1 nail. Each Strap must be attached to the top plate of the wall frame or embedded in the bond beam in at least one place. E. Structural Anchor bolts structurally connected or reinforced concrete roof. F. Other: G. Unknown or Unidentified H. No attic access 5.
I shall use examples of the Kobe Earthquake 1995, Boxing Day Tsunami 2004 and the Haiti Earthquake 2010. The earthquake of 2004 was caused by subduction of the Australian plate and the Eurasian Plate ,a 15-20m slip occurred along the fault line which then caused an earthquake measuring a 9.1 on the Richter scale. This a very high recording on the Richter scale so therefore it would always cause devastating hazards , but human factors could be seen as making the impacts far worse. The earthquake in the ocean had caused a tsunami to occur within the Indian Ocean. The wave reached up to 30 metres high causing devastation to the 13 countries surrounding the ocean.
Stonehenge is the most famous prehistoric monument in Britain. It is a circle of stones. People began building Stonehenge about 5,000 years ago, dragging each stone into place. Stonehenge is situated on Salisbury Plain in the county of Wiltshire. England covers over 50,000 square miles (130 439 square kilometres) and is the largest of the countries comprising the island of Britain, covering about two-thirds of the island.
Dozens of architectural and cultural sites will also disappear under the reservoir. Among the most notable are relics of the ancient Ba people, who lived in the region some 4,000 years ago. 300,000 Killed in 20th-Century Floods Chinese authorities estimate that some 300,000 people were killed in the 20th century's largest Yangtze River floods. Officials believe that the dam will protect some 15 million people from such deadly waters, as well as 1.5 million acres (607,000 hectares) of farmland. The wall is built
Next unscrew off completely the 4 screws that are on the back of the case that connect to power supply and slide out the power supply once unscrewed. 6. Before replacing the new power supply make sure the screw holes match the case screw holes and also make sure power supply fits appropriately. 7. Once that is done, simply slide new power supply where old power supplies was and slightly screw in the power supply onto the case.
The contribution of ordinary Portland cement production worldwide to greenhouse gas emissions is estimated to be approximately 1.35 billion tons annually [2]. To keep the global environment safe from the consequence of cement production, it is essential to explore the alternative materials that can completely or partially eliminate the use of cement in concrete and cause no environmental destruction [3]. Geopolymers are formed when various alumina and silica containing materials react under highly alkaline conditions and forms a three dimensional network of Si–O–Al–O bonds [4]. The most commonly used raw materials for geopolymers are clay and metakaolin [5]. Electric arc furnace steel slag is an industrial by-product obtained from the steel manufacturing industry during melting of steel scrap from the impurities and fluxing agents.