200 Park

By performing advanced analyses, SGH helped the construction team progress ahead of the already efficient schedule afforded by the SpeedCore system. Highlights of our work include:

• Evaluating the partially constructed building behavior under lateral loading
• Designing shoring and bracing, including a temporary lateral-load-resisting system to stabilize the structure during erection, and providing the structural steel erector with bracing options to facilitate erection of eight levels of steel above the highest completed floor system without grouting the SpeedCore steel plates
• Performing finite element analyses to understand the behavior and buckling strength of the ungrouted steel plate system; evaluating the structure’s ability to support two tower cranes attached to the bare steel plates ahead of grout placement several levels below the cranes (a condition not represented in the contract documents); and recommending additional trusses constructed within the core of the steel plates to achieve the required strength and stiffness—allowing the general contractor to achieve the aggressive construction schedule
• Providing analysis and erection requirements to maintain lateral stability of steeply sloping columns
• Designing weld platforms, including temporary connection details
• Evaluating column lifting lugs and base for temporary construction loading
• Assisting with the erection aid design