Problem 001-ms From the truss in Fig. T-01, determine the force in mebers BC, CE, and EF.

Solution 001-ms

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From the FBD of the section through a-a

answer

answer

answer

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Problem 002-ms The roof truss shown in Fig. T-03 is pinned at point A, and supported by a roller at point H. Determine the force in member DG.

Solution 002-ms

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From section to the right of a-a

answer

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Problem 003-ms The truss in Fig. T-04 is pinned to the wall at point F, and supported by a roller at point C. Calculate the force (tension or compression compression)) in members BC, BE, and DE.

Figure T-04

Solution 003-ms

HideClick here to show or hide the solution From section to the left of a-a

answer

answer

answer

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Problem 004-ms For the truss shown in Fig. T-05, find the internal fore in member BE.

Solution 003-ms

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From section to the left of a-a

answer

Problem 005-ms

HideClick here to hide or show the problem The structure shown in Figure T-07 is pinned to the floor at A and H. Determine the magnitude of all the support

forces acting on the structure and find the force in member BF. Solution 005-ms

HideClick here to show or hide the solution Member GH is axial hence; it can only transmit vertical force to the support at H.

answer

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If you wish to check the reaction forces at A and H, pass a cutting plane through members AB, AG, and AH. As shown in the figure above, the cutting plane b-b cut these members. Take the section above b-b and replace the cut members b y internal force to maintain equilibrium. Solve for the internal force in members AB, AG, and AH. With these forces known, you can then check the reactions through joints A and H. The free body diagram of the section above b-b is similar to the free body bod y diagram of section above a-a. See the solution of section a-a below for easy reference of doing the section b-b. From section above a-a

answer

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Problem 417 Using the method of sections, determine the force in members BD, CD, and CE of the

roof truss shown in Fig. P-417.

Solution 417

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compression

answer

compression

tension

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answer

Problem 418 The Warren truss loaded as shown in Fig. P-418 is supported by a roller at C and a hinge at G. By the method of sections, compute the force in the members BC, DF, and CE.

Solution 418

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At section through M-M

compression

At section through N-N

tension

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answer

compression

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Problem 419 Use the method of sections to determine the force in members BD, CD, and CE of the Warren truss described in Problem 408. 408.

Solution 419

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At section through M-M CDE is equilateral triangle, thus, CD = 10 ft.

compression

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tension

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tension

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Problem 420 Determine the force in members DF, DG, and EG of the Howe truss shown in Fig. P420.

Solution 420

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compression

answer

compression

answer

tension

answer

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Problem 421 Use the method of sections to compute for the force in members DF, EF, and EG of the cantilever truss described in Problem 411 and Fig. P-411.

Solution 421

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tension

answer

tension

answer

compression

answer

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Problem 422 Refer to the truss described in Problem 412 and compute the force in members BD, CD, and CE by the method of sections.

Solution 422

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From section through MN

compression

d

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compression

tension

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answer

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