Question

The maximum horizontal thrust developed in a symmetrical two hinged parabolic arch having span. 30 m and central rise 6 m due to a moving 100 kN load will be _______ kN.

• A. 97.66

Answer 1

The correct option is A 97.66
ILD for horizontal thrust in two hinged arches is shown below



$\therefore$ For 100 kN load maximum horizontal thrust will occur when load will be kept at crown

$H_{max}=\frac{25}{128}\times \frac{30}{6}\times 100=97.66kN.$