Q$3.$

The following elevations were determined along a longitudinal section of the natural ground surface representing a centerline of a proposed tunnel. The tunnel starts at the zero chainage point with an elevation of $E0=107\mathrm{.}54m.$ The tunnel will have an upward slope of $1$:$100$ for its first $100m,$ followed by a downward slope of $1$:$200$ for the rest of the tunnel.

$\backslash$table$[[$Distance $(m),0+000,0+050,0+100,0+150,0+200,0+250$