The new Multnomah County Central Courthouse is a striking   17-story tower clad in stone and glass that replaces the outdated old   courthouse, addressing the needs of Portland's growing population. This   modern, sustainable structure signifies an exciting renaissance for the city,   combining innovative design with functionality.

The building's façade prominently features 4 cm thick Amalfi Limestone,   extending from the ground to the 17th floor. Stone panels measure 5 feet high   by 3 feet wide, while the columns consist of 2 feet high by 5 feet wide   spandrel panels. The architect's vision is evident in the random vertical   strips of glass curtain wall and stone panel sections, with staggered glass   areas and variable widths of stone creating a dynamic visual progression.   However, achieving this design posed significant constructability challenges,   particularly with seismic criteria dictating over 3 inches of inter-story   drift. A robust stone support system was essential for creating a water-tight   rainscreen wall that would perform effectively during and after a seismic   event, leading to the selection of the ECLAD ESV aluminum wall system.

The project's delivery included full BIM services to a Level of   Detail (LOD) of 450, ensuring precise confirmation of component fit and   system integration. Comprehensive load studies, assembly movements, and   installation tolerances were meticulously evaluated, with custom aluminum   extrusions designed specifically for this project. The accurate 3D model   facilitated coordination among various trades, minimizing site adjustments.   As a LEED Gold-certified building, the courthouse incorporates sustainable features   such as a green roof, rainwater harvesting, and solar panels. With its   enduring beauty and modern design, the Multnomah County Central Courthouse   stands as a beacon of justice and a lasting symbol of Portland's commitment   to sustainability, inspiring all who visit.