Problem $5-$ Fire Ratings for a RC Column

Figure $5\mathrm{.}1$ shows the elevation and cross sectional details of an $RC$ column exposed to standard fire

on all four sides. The column, fabricated with carbonate aggregate concrete, had an applied load of

$1400KN(265$ Kips$).$ The column is made of concrete of strength $40$MPa$(5\mathrm{.}8$Ksi$)$ and the

reinforcing steel is of $444$MPa $(65$ksi $).$ Calculate the fire resistance of the column using ACI

$216\mathrm{.}1,$ Eurocode $2,$ AS code, and Kodur and Raut approach.

$($v$)$ Lruss secturn