[ri89]

I Know it's almost impossible to find the construction detail but for my thesis I have to analyze the development of skyscraper's envelope in Chicago and NY in the years.
I've identified three generations of envelopes in order with the definition of Banham.
For each generation I have to pick and analyze ten skyscrapers.
I need the stratigraphy of the walls to calculate the thermal performance of the building..
I'm sorry for having published so many post but I have urgent and this forum its my last possibility..