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Compression Ring for a Dome

Compression Ring for a Dome

Compression Ring for a Dome

(OP)
I have a roof structure 25ft in diameter in the shape of a dome that will require a 2ft diameter compression ring.  The dome will have ribs constructed of HSS tubes and will connect to a steel compression ring fabricated out of plates.  Does any body know of any good references to look at to get a good feel for the forces that would be in the compression ring?  I have Risa 3D and Staad Pro but I would like something other than a computer to analyze the forces in the ring.

RE: Compression Ring for a Dome

Sounds like a very small Schewedler dome!

There are two ways that I have used to analyze this type of dome by hand:

Method of joints
       and
Membrane Stresses

 

RE: Compression Ring for a Dome

I would second eawarfo's request for a good reference on a simple hand calculation method to get a rough idea of the forces in a compression ring.

RE: Compression Ring for a Dome

(OP)
Thanks for the responses.
 

RE: Compression Ring for a Dome

Roark's Formulas for Stress and Strain includes circular rings with N uniform radial loads, which sounds like what this would be.

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