This entry was posted on a different thread relating to shear studs in WTC7, as begun by mynym. The contents are relevent to this thread also as they suggest a rationale for NIST not releasing simulation data. The post went as follows :- Thank you mynym. As you say, NIST needed shear studs to be absent on that girder to even come close to making their theory work. That could be another reason why they now refuse to release the full set of drawings. Fortunately, Salverinas, who worked for Frankel, had a set of drawings that he used in presentations used to tour the Country. The powerpoint slides of those drawings, which were found on-line, show studs on all elements on all floors - which is what all building professionals tell us would have to be the case. That guy would not have risked ridicule from his audience of professionals on those tours if he had left studs off a transitional girder where different orientated floor pans met. There would have been questions from the floor at first sight of that slide Good spot.