Analysis of Three Hinged Semi Circular Arches

Q. A circular three-pinned arch of span 40 m and a rise of 8m is hinged at the crown and springings. It carries a horizontal load of 100 kN per vertical metre on the left side. The horizontal thrust at the right springing will be

1. 800 kN
2. 600 kN
3. 200 kN
4. 400 kN

Q. The three-hinged arch shown in the given figure will have value of H as

1. 50 kN
2. 40 kN
3. 20 kN
4. 30 kN

Q. A three-hinged semi-circular arch of radius R carries a concentrated load W at the crown. Horizontal thrust acting on the arch at the hinge would be

1. $\frac{W}{2\pi }$
2. $\frac{W}{2}$
3. $\frac{2}{3}W$
4. $\frac{4}{3}\frac{W}{\pi }$

Q. A three hinged arch shown in figure is quarter of a circle. If the vertical and horizontal components of reaction at A are equal, the value of $\theta$ is