Two Hinged Parabolic Arch (Problem No 2) With Point load acting at a distance from the Support

A two hinged parabolic arch has a span of 12m and a rise of 6m. A concentrated load 20 KN acts at 3m from the left support. The second moment of area varies as the secant of the inclination of the arch axis. Calculate the reactions and horizontal thrust at the hinge. Also calculate the maximum and minimum bending moments.
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