Sway Frame, Stuck with finding sway factor (Moment Distrubution)

[jmmstr]

Homework Statement

I have a sway case beam as in the image below, but do not know the equation for the pinned joints.

We were told Moment (AB) = 6EI(delta)/Lsquared
for fixed ends such as AB and BA but not told the moment equation for CF for example.

I am assuming FC = 0 due to no moment at the pin but I cannot go further with my distribution table before knowing these values.

Edit: I have the proping force of 42.25kN already and everything before this, we were told to use an abitory moment but this was good in the example if all the lengths and EI's were the same.

 

[jmmstr]

For anyone else needing to know this its 3ei(delta)/L squared :) and 0 for the pin.

 

[Mene]

I understand your frustration with not having all the necessary information to solve the problem at hand. It is important to have all the necessary equations and values in order to accurately analyze and solve a problem.

In this case, it seems like you have been given the moment equation for fixed ends (AB and BA) but not for the pinned joints (CF). It is possible that the pinned joints have a moment of 0, as you have assumed, but it is also important to consider other factors such as the load distribution and geometry of the beam.

I would suggest reaching out to your instructor or colleagues for clarification on the moment equation for pinned joints. Additionally, you can try looking up different methods for solving sway frame problems, as there may be alternative ways to approach this problem.

Remember, as a scientist, it is important to thoroughly understand and question all the information and assumptions given in order to reach an accurate and reliable solution. Good luck with your homework!