QUESTION 5 Consider the truss illustrated in problem 3 15 (page 138) and shown b

Question

QUESTION 5 Consider the truss illustrated in problem 3 15 (page 138) and shown below For the selected TRUSS MEMBER (BAR) identily whether the bar is in TE COMPRESSION Hint Look at your MDSolids solution. NOTE HOWEVER that MDSolids labels bar before answering may not be the same as given in illustration below Make sure you are lkooking at the coordinating Bar AC (on the Mustration given above and on page 138) Bar AD (On the ilustration given above and on page 138) Bar CD (on the Bustration given above and on page 138) Bar CE (on the iBustration given above and on page 138) . Bar DF (on the Bustration given above and on page 138) A TENSION B COMPRESSION C ZERO (0)

Explanation / Answer

1. Prob with True False:

It is TRUE, because when the member carry zero force, it means, that no matter what the load on the truss is, it will carry zero force. However if the adjacent member fails in that case it may provide the support, or the member may be aesthetically pleasing, so they can be reason for keeping the member, but as no such statment is provided, the best answer is TRUE.

2. Prob. of Truss.

Clearly,

AC is in compression,

AD is in tension,

for other members one has to calculate the forces using method of joints or section, and the image is blurred for that.

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