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the Falling Weight Deflecto meter(FWD) on pavements earmarked for rehabilitation. d_{e}=\frac{1.5 p a}{M_{k}}\left\{\frac{1}{\left.\sqrt{1+\left(\frac{D}{a} \sqrt{\frac{E_{p}}{M_{k}}}\right.}\right)^{2}}+\frac{M_{R}}{E_{p}}\left[1-\frac{1}{\sqrt{1+\left(\frac{D}{a}\right)^{2}}}\right]\right\} What is the structural transformation required to make the use of the above expressionpossible? Which parameters in the expression relate to the transformation? Identify the parameters in the expression which are obtained from the FWD test and brieflydescribe how the setup of the test enables those parameters to be obtained. [You may useany relevant expression(s) or equation(s) to support your explanation.]

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