ipl-logo

Cofferdam Advantages And Disadvantages

1463 Words6 Pages

Cofferdam:
The word “cofferdam” comes from the word coffer meaning box. In other words, we could say a cofferdam is a dam shaped like a box.
A cofferdam is a watertight structure designed to make construction projects in normally submerged regions easier. Such projects include bridges, piers and the repair works in oil platforms. A dam is placed in the area of the project and water is then removed from that area until the soil isn’t submerged by water. This allows the workers to place structural supports, repair or any other type of work in dry surroundings.
A cofferdam is a temporary structure most likely consisting of steel structures welded together, with other parts consisting of sheet pile and sand braces. The cofferdam is usually broken down after the main …show more content…

Dike Cofferdam
A dike is an embankment of a certain type of material. The materials most used in constructing a dike are soil, rock and sand-bags. Dikes are often used for a short period of time, this is to enable a cofferdam to be constructed later on.

2. Single Wall Cofferdam
A single wall cofferdam is applied in case the working area and area supposed to be enclosed are limited and small. This type of dam is only suitable for a maximum depth of 25m. On both sides of the single walled cofferdam a single row of piles is used.

3. Double Wall Cofferdam
If the area that is supposed to be enclosed by the dam is large, it becomes necessary to use a double wall cofferdam which is made of two lines of sheet piles tied to each other. There is a space between the tied sheet piles that is filled in with sand providing stability for the cofferdam. Double wall cofferdams are used when the area to be enclosed by the dam is very large and the water depth is

Show More
Related

  • Facts About Hurricane Katrina

    476 Words  | 2 Pages

    What was Hurricane Katrina? Hurricane Katrina was the largest and 3rd strongest hurricane ever recorded to make landfall in the United States. Katrina first made landfall on August 29, 2005 and struck the Gulf Coast of the United States. Hurricane Katrina was first announced as a Category 3 hurricane and with time it soon grew into a Category 5 hurricane.

    Read More

  • Pros And Cons Of Cacf

    215 Words  | 1 Pages

    In your grievance filed at CACF, you claim the mattress you were issued is defective. You further claim inmates at CACF are not receiving the same type of mattresses as other ADC inmates. Your resolution is to receive a new mattress. Your grievance appeal has been reviewed at Central Office and the Deputy Bureau Administrator 's response is affirmed.

    Read More

  • Sipping California Dry Summary

    685 Words  | 3 Pages

    The Earth is filling in the space where the water once was, causing a reaction known as subsidence, making the ground sink to over a foot in some areas of the central valley. Specifically, around Sack Dam, an important water containment resource, is sinking deeper than all the surrounding area, caused by all the drilling. “Water traditionally flowed with gravity.” Cannon Michael, president of the Bowles Farming Company (Richtel, page 5) stated. “It isn’t going to run uphill.”

    Read More

  • Pearl Woodrum's Fears In Buffalo Creek

    784 Words  | 4 Pages

    Pearl Woodrum saw her fears realized when the dam burst in 1972. As the residents of Buffalo Creek slept soundly in their beds, they would not be able to envision the horrors that would occur on that dreary February morning. They knew that any time there was a substantial amount of rainfall in Buffalo Creek, the creek would rise and the lack of an early warning system meant they might never know if a heavy rain heralded disaster until it was too late. Residents also knew that the dam was not stable, a fact the U.S. Geological Survey confirmed when it concluded that the dam was “basically stable but could be overtopped and breached.” William Davies was the federal geologist who conducted the study and stated that if the dam broke, “flood and debris would damage a church and two or three houses downstream, cover the road and wash out the railroad.”

    Read More

  • • How Did Water Shape The Land In Michigan

    1279 Words  | 6 Pages

    There are around 2,500 dams in Michigan. Dams can be used for suppressing floods and hydropower plant (image below is a dam). Hydropower plants use energy from fast moving water to produce electricity. These are a few ways that humans have shaped

    Read More

  • Great Wall DBQ

    481 Words  | 2 Pages

    The Great Wall was constructed thousands of years ago. It was built over a span of 2,000 years and measures to be over 5,400 miles long. Over the 2,000 years of its construction, many dynasties would help construct it. Some of them were the Qin and Han dynasties. The wall would act as a barrier to help keep enemy’s out.

    Read More

  • • How Did Geography Impact The Development Of Irrigation In Yuma County

    1400 Words  | 6 Pages

    Since the water in the Gila river rise and usually flood Yuma it could be used as a good irrigation instead of it ”rising and flow over the lower Reservation levee causing 800 feet in breaks”. Also since the colorado river was close to the city “the U.S. Bureau of Reclamation channeled the Colorado’s waters through a network of canals to previously arid land, transforming it into fertile cropland, and at the same time, it built a network of dams to generate hydroelectric power and provide flood control. ”Because of the two close rivers and previous flooding helped flattened the land in Yuma. Now the canals provided controlled flooding into crop lands. The other dams like the Laguna dam created hydroelectric power to help

    Read More

  • Louisiana River Levees Research Paper

    641 Words  | 3 Pages

    Levees direct river water straight into the Gulf of Mexico, where it no longer deposits sediment along the coast (p. 36). This causes all the excess water into only one location, and create pressure into one area to cause the levee to break. This happened in 1973, where the dam almost broke. People don 't realize that little things like that are actually affecting many things all at once.

    Read More

  • California O Shaughnessy Dam Analysis

    1428 Words  | 6 Pages

    However, a careful analysis of the reasons behind the creation of the dam and how the dam was built without much damage to the environment itself, as the system relies entirely on gravity to deliver this water; therefore no pumping stations were necessary, then it is very likely that the decision to build the dam was the correct one. The O 'Shaughnessy Dam is a vital component of the Hetch Hetchy Valley water system that provides water to the San Francisco Bay Area and surrounding communities. Nearly “2.4 million people rely upon the dam,” for their supply or electricity and water (Crabtree, 2013). The demand for the damn came about as a result of the idea during the progressive era in the United Sates that the introduction of public works to certain areas was the most beneficial ways in building a great civilization.

    Read More

  • Northwestern Coast Tribe Essay

    422 Words  | 2 Pages

    A weir is a structure built in the water typically out of either wooden poles or stone, and is used for catching the fish as they swim in the current. The fishers would use hooks made out of bone and wood to catch fish as well. This was very helpful because they were able to catch whatever size fish they would like. The bigger

    Read More

  • The Controversial Glen Canyon Dam

    1891 Words  | 8 Pages

    Glen Canyon Dam was built to provide much needed power to Phoenix. President Eisenhower greenlit the project and the Bureau of Reclamation was the force behind its construction. Although the Sierra Club fought against building the dam, their efforts were not successful. Its creation decimated the natural ecosystems, fish that had evolved to survive in its silty water died as clear colder water came out of the dam. Archeologically the dam also represented a loss, as thousand-year-old petroglyph panes and caved dwelling of the Anasazi became submerged.

    Read More

  • Rhetorical Analysis Of The Damnation Of Canyon, By Edward Abbey

    906 Words  | 4 Pages

    By describing in detail how the canyon looked before after the dam was built, the audience can fully grasp the dramatic effect the damn had on not only the natural wildlife and landscape of the area but also how it affects the lives of the people who lived there. All the details that the author puts into describing how the land looked before the damn came, makes the argument seem much more credible since it rhetorically asks the audience why the people of Colorado would want to demolish such a naturally beautiful place? It makes the reader think if the pollution and destruction of the natural ecosystem is much too high a cost for to allow people to see the

    Read More

  • Advantages And Disadvantages Of Unwind

    1009 Words  | 5 Pages

    Novel choice: Unwind What format did you read? eBook 1. What catastrophe or apocalypse has caused changes to life, culture, and community in this dystopia? The Heartland War is the catastrophe that changed life, culture and community in Unwind.

    Read More

  • Pros And Cons Of Budget Surplus

    863 Words  | 4 Pages

    A budget surplus occurs when tax revenue is greater than government spending. Therefore, the government can use the surplus revenue to pay off the national debt. Budget surpluses are quite rare in modern economies because of the temptation for politicians to spend more money and cut taxes.

    Read More

  • Essay On Flood In Kuching

    727 Words  | 3 Pages

    They also include the replacement of undersized structures such as bridges. These works are necessary, as the original channels have become undersized as a result of the increase in flood flows caused by development. Flash flood also can be overcome with storage ponds of flood attenuation. Ponds such as disused mining pools can be used for flood storage. The objective is to divert the flood water through such ponds and thus regulate the outflow so that the flood peaks are attenuated.

    Read More

More about Cofferdam Advantages And Disadvantages

Open Document