As Chairman of the CTBUH I am well connected to most of the leading practitioners of tall building design. The Council represents organizations with well more than 100,000 employees. I do not know anyone or organization in the Council that supports the controlled demolition theory. The ASCE has an engineering membership of 120,000 and they participated in the production of the NIST report. NIST itself employs about 2,900 scientists, engineers, technicians, and support and administrative personnel and hosts about 2,600 associates.
Against this you have the ae911truth movement which has support from approximately 80 licensed structural or civil engineers, who have signed its petition. Now in proportion to the industry the level of support that the 911truth movement is tiny. However I can understand why 80 people did, because the response from government was slow and the one side videos the 911truth movement show are very compelling, if you do not review them critically.
Some people will never believe we landed on the moon and some people will never believe that the planes that crashed into the towers, eventually brought them down. From my perspective both of these statements are equally preposterous. However the 911truth movement only provides one side of the argument and any organization that does so is not interested in truth. There are numerous answers to the questions they raise and the overwhelming evidence is that CD played no part in the collapse