rationalskepticism.org

I will also note that JAT's post contains a reasonable estimate for the mass of concrete in one floor - and the post by psikeyhackr contains masses for large elements of the building - which allows one to compute the TONS OF STEEL AND TONS OF CONCRETE.

Well done, psikeyhackr, you've finally answered one of your own longest-running questions.

I note you haven't done anything with the information.