WHAT IF… New York´s SEAGRAM Building was a HYBRID building


This is an unreal scenario in New York, in 1955, imaging that the designers of the famous 39-story Seagram Building, Mies Van Der Rohe and Phillip Johson, knew the technical advance of mixing steel, concrete and wood in structures (Hybrid structures tech) and could get a low impact on environment, based on CO2 fingerprint materials and passive solar building design knowledge.

Key benefit

Mixing concrete and steel in a rigid and heavy base of the building, with light and flexible wood slabs around its core and upper levels, can get a lighter building and very resistant to wind (aprox. 41% less dead loads).

Material list

Kerto-S-LVL Beams

Ecological values

A building with a concrete and steel mix in a heavy base, with light and flexible wood slabs around its core and upper levels, reduces the embodied CO2 in materials by aprox. 68% of the normal steel + concrete buildings. The redesigning of the structure also allows to change the single-glass window system for a double-paned system and to modify some building details in order to save aprox. 30% of energy consumption.



  • Economical span (mm)
  • Thickness (mm)
  • Airbourne sound reduction factor (dB)
  • Impact sound transmission (dB)
  • Resistance to fire class
  • Thermal properties



Filename Size

Facade on Park Avenue JPG1423 KB
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