The 1.2 million square foot addition includes eighteen new gates, nine able to accommodate Airbus 380, Boeing 747 and Boeing 787 aircraft. The architectural features and functions of the building challenged conventional structural solutions for lateral stability, so a curved moment frame with non-orthogonal moment connections was developed. This geometric shape had never before been used  for a moment frame in high seismic regions. The building is designed to achieve LEED Platinum certification.