- #1

spggodd

- 38

- 0

## Homework Statement

Hi, I am having trouble with the following problem and I can't seem to find any examples:

I am trying to determine reactions at points A and D of the redundant structure below using the unit load method, there is a 10kN load at the top left point (B), all lengths are 1m. Apologies for the poor diagram, please ask if you need clarification.

Edit: Diagram through text didn't work, uploading a picture now..

## Homework Equations

Equilibrium Equations?

## The Attempt at a Solution

I started by working out forces in the x direction.

10000+Dx+Ax =0

Then in the y direction:

Ay + Dy = 0

And then moments around D:

10000 x 1 + Ay

This then gives a series of un-solvable equations.

I think I may be ok when getting to the actual unit load method but I can't convince myself that I'm right for the equilibrium equations.

Can you help out?

Thanks

Steve