When completed in 1980,the JP Morgan Tower in Houston. TX was the tallest composite building in the world. It’s understated architecture and unabashed geometry is underscored by a simple structural system highlighted by distinct mechanisms and technological advancement The 75 story tower has an open tube composite perimeter frame which has a natural tendency to warp; this structural issue was resolved with the application of a uniform shear membrane of beams linking to a core shear wall.
The composite structure of steel and concrete steel provided logistical challenges that required the creation of custom built ‘jump’ forms that ended up setting records for concrete pumping at the time.