The internal forces in truss members are equal and opposite to the forces they exert on adjacent, contacting members.  As such, a truss member with an internal tensile force of T will exert a compressive force with a magnitude of T on a connecting member. Group of answer choices True False

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Figure 1 shows a pin connceted members of truss. As you are structural engineer, you are required to do the following: Q1 i) Calissify the stability and determinacy of truss? ii) Determine the internal force that can be developed in the member AC using method of SECTION? iii) Determine the horizontal displacement at joint D? D 20 kN 5 m 10 kN 3 m A B 6 m Figure 1

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Determine the forces in all bars of the truss in the Figure. If your solution is statically inconsistent, what conclusions can you draw about the truss? How might you modify the truss to improve its behavior? Explain.

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A simply supported planar truss is subjected to point loads at joint B and D as shown in Figure 2. Based on the given truss, answer the following questions: a. Identify zero force member in the truss (if any). Provide the justification for your answer with the calculation. b. Using any suitable method, find force in members BC, HC and HG c. Is the force in member AH is similar in member FE? Provide your reason with the calculation. 5 kN 4 kN 13.27m A E H G F 5m 5m 5m - 5m

Question 4 For the truss shown in Figure 4, identify all zero-force members and show your reasoning. P K OF E P A B Figure 4

Find the force in each member of the truss by using: 1- The method of consistent deformations. 2- Castigliano's second method. Take the member AB as a redundant. The stiffness EA is constant. 1,2 m ID 0.9 m 10 kN 0.9 m

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