Pin A & C: Why No Y Component in Solution Manual?

AI Thread Summary
Pin A and C are both pinned joints capable of supporting vertical and horizontal forces, but the solution manual indicates that C does not have a vertical component. This discrepancy arises because, in the given problem, there is no vertical force acting at joint C. For a vertical component to exist at C, member CD would need to be inclined rather than horizontal. The discussion emphasizes the importance of understanding the conditions of forces applied at joints in truss systems. Therefore, while both pins are structurally similar, their force components depend on the specific loading conditions in the problem.
fayan77
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Homework Statement


Pin A and C are the same, however in the solution manual it shows that C does not have a y component. Why is that?

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fayan77 said:
Pin A and C are the same
They are not.

How would the beam at C transfer a vertical component?
 
they are tho, they look exactly the same. why is it that c does not provide a vertical force?
 
fayan77 said:
they are tho, they look exactly the same. why is it that c does not provide a vertical force?
They are both pinned joints capable of taking forces in both the vertical and horizontal direction, but in this problem, no vertical force exists at C. You should attempt to answer the question asked by @mfb. What do you know about truss members with forces applied at joints?
 
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In order for there to be a vertical component of reaction at C, member CD would have to be inclined rather than horizontal..
 

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