Puddle Flange - Design

[TPWells]

Hi All,

I am in need of some help. We have a 30 inch suction line running into a reinforced concrete wall. A puddle flange will be placed in the wall as a connection. Piping stress have provided large torsional and axial loads at this location. I have tried to get them to use bellows and anchors before the wall to take out the load but they can't seem to accommodate this. I have never considered this design before so could someone give me a steer in the right direction? The wall is 400mm thick.

Thanks

Tim

 

[PSEPK]

If you could provide a sketch of your problem, it would be easier for others to understand the situation and suggest some solution.

A good structural engineer is often a blessing for others.

 

[KootK]

Which of these scenarios best represents your situation TPWells: Link?

Torsion in the wall probably isn't an issue. The trick will be transferring the torsion from the puddle flange to the wall. That probably happens as bearing against the intermittent stiffeners around your flange.

Axial load would need to be checked as:

1) Punching shear behind the flange.
2) Flexure in the wall as a result of the applied, transverse point load.

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.