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[QUOTE="sutomcat, post: 3421995, member: 27"]
Yup.

My guess is that these were added to provide more stability to the PTFE portion of the roof, which appears to be supported largely by cables going horizontally across the hard shell part of the roof (along with the vertical posts and the steel arcs).

They have made great progress hanging the big cables from the cross truss.  They might be done with that.  Now the feverish activity of the cranes on the dome floor has almost stopped.

Let's talk about how this roof is going to go up.

This is what I am thinking...

I am assuming that these cables are all getting attached to the four roof cables that form the border between the hard shell and PTFE portions of the roof.  I am assuming the initial goal is to jack up the roof focusing on the connections to this diamond shape.  I am assuming the cable net will be brought up to the level of the tension ring, and the roof cables will be attached to the tension ring, and then the diamond will be raised further to the height it belongs (i.e. where the hard shell part of the roof ends and the PTFE part starts.

That should result in a cross hatch of cables lying horizontally over the interior part of the roof that will eventually be covered with PTFE.

From this point, the hard shell roof can be installed and the PTFE portion built.

Make sense?
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