Compose a 1500 words assignment on cfa piles in granular soils. Needs to be plagiarism free! The favorable geotechnical conditions for use of CFA piles include soil conditions such as medium to very stiff clay soils, weak limestone, residual soils, and medium dense to dense silty sands and well-graded sands, and cemented deposits. However, as far as granular soils are conditions they fall under the unfavorable geotechnical conditions for use of CFA piles (Geotechnical Engineering Circular (GEC) No.8 Design and Construction of Continuous Flight Auger Piles Final 2007). The present study focuses on the historical development of the equations used for the design of CFA piles in granular soils.The size of typical continuous flight auger piles is 30 to 100 cm in diameter. It is mostly used for purposes of installation of methods and equipment, considering the advantages they provide for their speed and cost-effectiveness. CFA piles are also known as augered cast-in-place or auger cast piles in the United States for their practice. These piles can be distinguished from others through their constructions since the concrete that is used in the piles, which is many times a mix of sand and cement, is located through the hollow center of the continuous flight auger drill string as the augers are withdrawn and then the reinforcement is placed into the wet fluid mix after the casting operation is complete (Brown n.d.).Thus the pile becomes a structural element reinforced with concrete designed accordingly to the need of the construction and the nature of the soils. When lengths of 10 to 30 m are used for the CFA piles, they have been found to be the most cost-effective. The construction is effective when it is completely done in soils, although these piles may be used in weak rocks as well. The piles can be drilled and finished at very high speeds, which makes it possible for the constructor to install several piles within a short period of time. The advancements associated with the design and construction of the CFA piles have been based on two major factors in the present times. .
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