Problem 335 | Equilibrium of Parallel Force System Problem 335 The roof truss in Fig. P-335 is supported by a roller at A and a hinge at B. Find the values of the reactions. Solution 335 Click here to expand or collapse this section Replace the 3-20 kN forces and 2-10 kN forces by a single 80 kN force $\Sigma M_B = 0$ $15R_A = 10(60) + 7.5(80) + 5(50)$ $R_A = 96.67 \, \text{ kN}$ answer $\Sigma M_A = 0$ $15R_B = 5(60) + 7.5(80) + 10(50)$ $R_B = 93.33 \, \text{ kN}$ answer Tags point load parallel forces fink truss Truss Reaction reaction at the support roof truss Support Reactions Log in or register to post comments Book traversal links for Problem 335 | Equilibrium of Parallel Force System Problem 334 | Equilibrium of Parallel Force System Up Problem 336 | Equilibrium of Parallel Force System