Question

Assignment #4 (2)-Protected View . Saved to this pc Design Layout References Mailings Review View Help Tell me what you want to do Abdelrazaq Ibrahim Ali a careful- files from the Internet can contain viruses. Unless you need to edit it s safer to stay in Protected View. Enable Editing Problem 2: (Use MD-Solids to verify your answers) Determine the force in each member of the truss using method of joints and state if the members are in tension or compression. Set P1:6 KN, P2- 9 kN P2 Problem 3: (Use MD-Solids to verify your answers) Using Method of Joints, determine the force in each member using method of joints of the roof truss shown in Figure below. State if the members are in tension or compression Assume all members are pin connected

Answer 1

Here, for simplification in solution, we assume that

$\dpi{100} \angle EAB=\angle EDC = 45^o$ and   $\dpi{100} \angle EBC=\angle ECB = 60^o$

Support A provide hinged support. So, bending moment and vertical reaction force generate. Whereas Support D generate only vertical reaction force.

MA k-Amni- t-..4m.at --tr.爿 Accocading to equilibmum condition Thus, Rnt & 15 Taking faree body dio il Joint A ent Paint ae he Cos45 居b

sin60 Pbe Cos6o GKN チ-(6.929 rin) Joint D 45 cd 요 kN

Civ) Jaintc Poc red le 10.392 kN() Ped 느(10.392 XCos 60) t 3.536. 8392 kN (-) Eina buss onauly sis oith digec-tion 41s