If the Twin Towers were still standing today, how long would they stand for in this century?

4 answers

I don't understand what you're asking. Please clarify.
I'm sorry, Ms. Sue. I'll say it clearly.

When the two World Trade Center buildings were fully completed in the 1970's, how long would it last for?
http://www.google.com/search?source=ig&hl=en&rlz=1G1GGLQ_ENUS374&q=lifespan+sky+scraper&aq=f&aqi=&aql=&oq=&gs_rfai=CyVNxIjBcTN_bNouEhQSl6PCFBgAAAKoEBU_QB5oO
These types of building are designed for greater than 100 years. The inner structure is examined and maintained, the outer can be repaired/replaced. Only the foundation (bedrock) is not repairable, so the building depends on that, and it is the unknown variable.