Quote:
Originally Posted by NOPA
This is slightly off topic and I am sure it has been already talked about here or in another forum, but why does 3 WTC have a concrete core rather than the steel frames used in 1 and 4 WTC? I know that both are used but can somebody explain (or point to where I could find info on) the differeces between the two construction methods? Thanks.
The tower is looking good!
|
All five towers at the World Trade have a core steel frame encased in high strength concrete.