Chapter 6, Problem 23P

Determine the member forces for all members in each truss shown using the method on joints. Remember to list each member force as either tension or compression.

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Calculate the forces in members BE and BD of the loaded truss. The forces are positive if in tension, negative if in compression. Assume F = 6.2 kN, a = 3.4 m, b = 3 m, c = 2 m, and d = 2 m. b b A F Answers: BE = BD = a i IN E a D KN kN

Determine the force in members GE, GC, and BC of the truss as shown below. Indicate whether the members are in tension or compression   OPTION:(MULTI CORRECT(MAY BE)): 1.Force in Member BC is about 800 N Compressive 2.Force in Member GE is about 800 N Compression 3.Force in Member GC is about 500 N Tensile 4.Force in Member GC is about 600 N Tensile 5.Force in Member GE is about 700 N Compressive 6.Force in Member BC is about 900 N Compressive 7.Force in Member GC is about 500 N Compressive 8.Force in Member BC is about 900 N Tensile 9.Force in Member BC is about 800 N Tensile 10Force in Member GE is about 700 N Tensile 11.Force in Member GE is about 800 N Tensile 12.Force in Member GC is about 600 N Compressive

The truss shown is designed to support a staircase. For all questions, indicate whether the members are in tension or compression. Assume that all joints are pinned. Use the method of sections for each part. a. Determine the force in members EG, FG, and HF Fec=3.96 kN (C) Fs 1.10 kN (T) Fee 400N (T) b. Determine the force in members EF and DF Fe=400N (C) For=226 KN (T) 400 N 800 N 2 m 2 m 800 N 2 m E 800 N 2m 2 m 45 400 N 2 m 2. 2.

Question 1 For the given truss, calculate the force in each member. Include the direc- tion. • F = 200 • F3 = 100 • y = 10 • F2 = 100 • x = 5 %3D F, F, y.

The truss shown has a pin at A and a roller at C. Using the method of joints, determine the force in each member of the truss shown. State whether each member is in tension or compression. 6 ft 6 ft 19.9 kips D 8 ft-º 3 kips 17.5 ft-

Solve the following problems by the method of sections. State whether the members are in tension or compression. Determine the forces in members DE, EG, FG, and FH of the truss shown in Fig. 1500 Ib 1500 Ib 1500 Ib 6 ft6n- - 1500 Ib 1500 lb -6 ft 6 ft- 1500 lb 1500 Ib -6 t 6 ft -6ft- 6 fi-

-11 in-- 11 in-- 30 in E The sign with weight W, = 32 lb acts through it Center of Gravity as shown. The structural system is supported by pin connections at E and D. Define force directions with arrows for all problems. 30 20 (a) Calculate the magnitude of the tension force existing in member AE. Ski Reintals (b) Calculate the magnitude and direction of the vertical component of the reaction at D. (c) Calculate the magnitude and direction of the horizontal component of the reaction at D. 33 in