Estimate the allowable compression capacity of the following bored pile using Table $2\mathrm{.}1$ of Code of Practice for Foundation $2017.$ Bored pile dimensions: $2$ m in diameter, $65$ m in length. Ground profile: $5$ m of fill$/$alluvium sand overlying granitic saprolite. Weather grade III and II granitic rocks were found at $65$ m and $70$ m $($below ground level$)$ respectively. Groundwater is $5$ m below ground surface. State all necessary assumptions or input parameters for the calculation. $(10$ marks$)$ If you are a resident engineer on site, what are your main considerations in the construction supervision of bored piles in $($a$)$ above. $(5$ marks$)$ If you are to perform an alternative foundation design for the site in $($a$)$ above, briefly describe two potential options. $(5$ marks$)$