$1.$ SANS $3001-$GR$1$ & GR$2($sieve analysis$)$

$1\mathrm{.}1$ the following are factors that can affect the accuracy of sieve analysis results, explain the factors in details

$>$Method of preparation

$>$Inadequate shaking of the sieve

$>$Calibration of the apparatus

$>$Verification of sieves

$1\mathrm{.}2$ In general, explain how the sieve analysis test results can be interpreted? $3$ points.

$2.$SANS $3001-$GR$10-$ Atterberg limits test $($ Liquid Limit, Plastic Limit & Plasticity Index, Linear Shrinkage$)$

$2\mathrm{.}1$ the following are factors that can affect the accuracy of Atterberg limits test results.

$>$Sample preparation

$>$Moisture Content

$>$Compaction during preparation of the sample

$>$Incorrect amount of soil taken from the plastic limits tests

$2\mathrm{.}2$ In general, explain how the Atterberg limits test results can interpreted. $3$ points

$3.$ SANS $3001-$GR$30($maximum Dry Density & Optimum Moisture Content$)$

$3\mathrm{.}1$ what is the purpose of the Maximum Dry Density and Optimum Moisture Content test on gravel and soil materials?

$3\mathrm{.}2$ What factors can affect the accuracy of MDD and OMC test results?