$Q($Years$).$ Space given for staircase in multistory building $=2\mathrm{.}6m**5\mathrm{.}2m$ if the space between flight $=0\mathrm{.}18m,$ weight of $RC=2500,$ total thickness of flight $=0\mathrm{.}3m,$ vertical projection of the flight $=160cm$ and $G=30cm.$ Find :

$1-$ Number of goes

$2-$ Number of steps

$3-$ Number of rises

$4-$ Length of flight

$5-$ Width of flight