Statics problem - is the mistake mine or the solution manual?

[Femme_physics]

So I got everything right other than Rd (the end). I personally think there's a mistake in the solution manual.

Homework Statement

Basically these are all pin joints, even the "hydrolic cylinder" (CD) is weightless and connected by pin joints, so the fact it's called or drawn as "hydrolic cylinder" doesn't matter.
F = 80 [kN]
Ignore the weight of all the beams

http://img198.imageshack.us/img198/3063/sketch1999.jpg

The Attempt at a Solution

Attached

 

[I like Serena]

I can't fault your solution.
I give it my stamp of approval. :)

What's the answer of the solution manual?

 

[Femme_physics]

w00t! Another mistake to add to my blog :)

Thanks for the stamp!

Answer manual's Rd = 226.27 [kN]

Solution manual full solution attached

 

[I like Serena]

w00t! Another mistake to add to my blog :)

Thanks for the stamp!

Answer manual's Rd = 226.27 [kN]

Solution manual full solution attached

Yes, there's indeed a mistake in the solution manual.
They took the force at E in the wrong direction.
They really should have drawn proper free body diagrams as you did! :)

 

[Femme_physics]

*pats self on shoulder*

Thank you Serena! :)

 

[eczeno]

i also believe your work is correct. and it is very clear and easy to follow; nice job.

cheers

 

[Femme_physics]

Thank you eczeno! :)