- #1

- 4

- 0

## Homework Statement

The simple pin-connected structure carries a concentrated load P as shown. The rigid bar supported by structure AB and by pin at C. The steel strut Ab has a cross sectional area of .25in

^{2}and a yield strength of 60ksi. The diameter of the steel pin at C is 0.375in and the ultimate shear strength is 54ksi. If a factor of safety of 2.0 is required in both the strut and the pin at C. determine the maximum load P that can be supported by the structure.

http://img707.imageshack.us/img707/21/photowb.jpg [Broken]

## Homework Equations

[itex]\Sigma[/itex]F

_{x}=0

[itex]\Sigma[/itex]F

_{y}=0

[itex]\sigma[/itex]

_{allow}=[itex]\sigma[/itex]

_{failure}/(Safety Factor)

[itex]\tau[/itex]

_{allow}=[itex]\tau[/itex]

_{failure}/(Safety factor)

Safety Factor=[itex]\sigma[/itex]

_{failure}/([itex]\sigma[/itex]

_{actual})

Safety Factor=[itex]\tau[/itex]

_{failure}/([itex]\tau[/itex]

_{actual}

Safety Factor=P

_{failure}/(P

_{actual})

Safety Factor=[itex]\nu[/itex]

_{failure}/([itex]\nu[/itex]

_{actual})

## The Attempt at a Solution

http://img196.imageshack.us/img196/5855/scan1dl.jpg [Broken]

I know the max allowable P at each point, but what I'm having trouble finding is the max P, based on those max loads at the points. How do I finish solving this?

Last edited by a moderator: