QUESTION $2$

For the given three$-$hinged parabolic arch, determine using the equilibrium of the structure $($not the

conjugate beam$)$:

a$)$ The reaction forces.

b$)$ The location and the magnitude of the maximum bending moment in the part C$-$B of the arch

The equation which describes the geometry of the arch, in respect to $x-$y coordinate system, with origin at

point $A$ or at point $B,$ is provided:

$y=\frac{8}{10}x-\frac{8}{400}{x}^2$