Question: 1. The arch shown in Figure P6.21 has a pin support at A and a roller at C. A tension rod connects A and C. Determine the reactions at A and C and the tension in rod AC.
![1813_6.21.png](https://secure.tutorsglobe.com/CMSImages/1813_6.21.png)
2. . For the three-hinged arch shown in Figure P6.22, compute the reactions at A and C. Determine the axial force, shear, and moment at D.
![1898_6.22.png](https://secure.tutorsglobe.com/CMSImages/1898_6.22.png)