A three-hinged arch of span \(8\,\mathrm{m}\) carries a central point load of \(32\,\mathrm{kN}\). If the central rise is \(2\,\mathrm{m}\), the horizontal thrust is
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For a three-hinged arch carrying a central point load,
\[
\boxed{H=\frac{WL}{4h}.}
\]