0.4 m 2 m 2 m 2 m B

5)Determine the forces in all members of the truss. There is a pin at A and a roller at D. In answers for truss forces remember you must always indicate if a member is in tension (T) or compression (C); for example, if there was a member JK carrying a 2 kip compressive load the answer would be FJ = 10 K (C) 3 m G 10 kN 6kN E -2.5 m- -1.5 m-1.5 m- -2.5 m

Q-1 Link-2, shown in the figure, is 30 mm wide, has 12 mm diameter bearings atthe ends, and is cut from low carbon steel bar having a minimum yield strength of190 MPa. The end-condition constants for link-2 are C = 1 and C = 1.2 for bucklingin and out of the drawing, respectively.a) Draw necessary and clear free-body diagrams to determine the reactions atthe supports and the load on both member-2 and member-3. b) Determine a suitable thickness for link-2, based on a design factor of safetyηD = 4, and considering a material having E = 207 GPa, and a minimum yieldstrength Sy = 350 MPa.c) Determine the stress and resulting factor of safety for each pin, and state yoursuggestions in case of design factors less than 4.

*For the Howe bridge truss shown, d=11 ft,F1=3150 lb, F2=2150 lb, F3=2550 lb, and F4=4150 lb.* Pt A. Determine the forces in members CD, DH, and GH. Pt B. Determine the forces in members HI, BH, and BC.

The steel truss (E =200 GPa) shown in figure below has a cross-sectional area of 1920 mm². Determine: a. The largest allowable load F if the change in length of member BD is not to exceed 1.6 mm and a factor of safety of 2.5. b. The displacement of support D due to the load calculated in part a. 5m 6m A C F

A rigid ban AB and "CD" as shown are supported by pins at "A" & "C" and two ross. Determine the maximum force 'p' that can be applied as given if it's vertical movement is limited to 5 mm. Neglect the weight of all the members. www A 3m 3m Aluminium P L = 2m, A= 500m² E =70 GPA 3m IB 3m Steel L=2m A= 300m² E = 2006/ D

Problem 2: Determine the forces in all diagonal and horizontal members of the truss shown below using the method of sections. Determine the force in all vertical members using the method of joints. Hint, the structure is symmetric. The distributed load is transferred to the truss from the roof purlins. State whether the members are tension or compression. Summarize your results on a sketch of the truss. 2.5 k/ft H M K 12 ft A G B C D F 6 @ 12 ft = 72 ft

: Consider the truss shown in the figure below, and answer the following questions. Figure is not to scale. P P R K 5 m B C D E F - 2 m --2 m - 2 m - 2 m- 2 m-- 2 m - a) If P and R are non-zero forces and Q = 0 kN, indicate all the zero-force members in the truss. O LB O LC O KC O KD O JD O ID O IE О НЕ О НЕ O None b) Following from the situation described in Part (a), how many additional zero-force members will there be in the truss in the following situation? If the force R acting at node H is removed.