While the original limestone blocks measured 8 in. thick, the new precast concrete panels were only 4 in. thick to accommodate a new thermal and water barrier system. We designed custom connections to secure the precast concrete panels. For this project, SGH completed the following:
- Developed a solution to attach the precast concrete panels to the building through the thermal/waterproofing barrier
- Determine the configuration of each of the existing limestone blocks and located connections for new panels by using the general contractor's field dimensions and precast fabricator's shop drawings
- Detailed both lateral and vertical connections for every panel, which also attached adjacent panels to each other
- Specified new steel columns located within sections of the mass masonry throughout the facade
- Devised over 7,500 custom steel components welded to the columns with connectors slotted into the panels
- Detailed the connectors to be adjustable to allow on-site adjustment during construction
