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(i) Conduct a and summarize the historical development of the equations used for the design of cfa piles in gr - Literature review Example
Author : leonardschiller
Engineering and Construction
Pages 6 (1506 words)
Institution Date Continuous flight Auger (CFA) is considered to be present between driven piles and drift shaft. This idea has a primary attribute towards different lateral stress changes during times of installation of the various types of piles…
It is highly important to note that the estimated static CFA capacity is achieved through methods that are developed for specific objects such as drilled shafts and driven piles, mainly because the behavior of CFA piles’ load-settlement are same. During the installation process, there is the establishment of end bearing and side shear resistance with pile displacement has similar features with other kinds of deep foundations (O'Conner & Robertson, 1997). During the process, total axial comprehension resistance of located CFA pile is attained via calculation of both the end bearing and side shear resistance (RT=RS+RB). In order to calculate the side shears resistance, it is significant to have a division of the length of the pile to N pile sectors. After this calculation, the side resistance of a particular pile segment is attained by multiplying the shear resistance of the part or segment. This is attained by the surface area of the segment or part of the pile (RS = ?iN fs,i ? Di Li). However, some calculation methods use the average segment of side shear to get the length of the pile. The overall side shear resistance of the pile is achieved by RS = fs-ave ? D L in that D represents the average diameter of the pile while L represents overall embedment length of the pile. The total end resistance of the pile is attained by RB=qp[?DB2. ...