A three – hinged parabolic arch of span ‘L’ and rise ‘h’ is subjected to a uniformly distributed load of intensity ‘ω’, then the horizontal thrust at the supports is
1
\(\frac{{w{L^2}}}{{8h}}\)
2
\(\frac{{w{L^2}}}{{{h^2}}}\)
3
\(\frac{{wL}}{{8{h^2}}}\)
4
\(\frac{{wL}}{8}\)