Reply #33: I just thought that number was odd.

[Make7]

It was less than what you had for each tower in your opening post.

In that post you calculated 528.471 cubic yards per floor. So if you take 110 floors above ground + 6 basement levels + the roof, you get 117 concrete slabs of 528.471 cubic yards. The product of those two numbers equals 61,831 cubic yards. As far as I can tell, your latest figure does not include any of the following: concrete walls in the basement, concrete encasement of columns in the basement, fireproofing of some of the steel beams throughout the building.

Estimating all of this is by no means an easy task. If it was, I probably would have done it long ago. As it is, there are still a lot of unknowns to try and resolve, but with everyone giving their input to the problem perhaps we can come up with something useful.

- Make7

BTW - Don't you have Excel or some other spreadsheet application on your computer? It would make things a whole lot easier.