helpb$)$ An three$-$pinned parabolic arch system ABC of bridge structure is given as the shape shown in Figure $2.$ The arch spans $130m$ and has a rise $20$ meter above the horizontal line joining both supports. $($i$)$Determine the reactions at the support when triangular loading of $8k\frac{N}{m}$ act across the span and calculate the bending moment $20$ meter from the right hand support B$.($ii$)$If the same arch supported a uniformly distributed load of $8k\frac{N}{m}$ instead of triangular load, again, calculate the reaction and bending moment at $20m$ from the right hand support B$.$ Make a brief explanation on comparison between the analysis of $($i$)$ and $($ii$).$

rrks$)$