Andrew

The bolted mechanism is just an example. the 84 inch consisted of a clamp around the vertical pipe which was attached to box beams. The boxed beams allowed for tight clearances. The actual clearances, friction and flexibility of the structure were input into the caesar model.

I will attempt to describe it this way. Draw 2 rectangle on on top of the other. This is the plan view. The pipe runs vertical in the middle. A clamp with two box beams is welded to the clamp. The pipe is allowed to move vertically through the clamp. At the ends of these box beam is a box beam allowing a box beam to go through top to bottom in your plan view. The beam is allowed to slide.

The top and bottom are fixed. This allowed translation horizontally, top to bottom but restricted rotation. The other horizontal motion was also restricted. It was a welded construction. I do not recall the loads but it was effective enough to reduce the loads at the compressor.This was built 9 years ago and have heard no complaints about the operation.

Regards