Thornton Tomasetti provided structural design services through design development phase for the Lombardy Regional Government’s headquarters. The project includes five nine-story wave-like buildings totaling 98,000 square meters, including a 43-story tower that is 37,000 square meters, three parking and storage levels below grade and a plaza. The open roof garden with trees and landscaping is enclosed by an approximately 50-foot wall of glass supported by vertical cantilevered tube steel vierendeel trusses with no overhead beams. The government buildings include general assembly spaces, offices, and areas for social functions and public debates.
There is a large piazza area enclosed in the center of the site by the surrounding low-rise buildings and tower. The piazza roof is covered by a tubular lamella structure spanning 140 meters by 45 meters and is clad in an extremely light, innovative pillow membrane system. The rim of the eye- shaped roof structure is supported along the edges of the podium structures with slide bearings that accommodate building movement at expansion joints. Grand entrances to the piazza are created by open double height ground floor areas and multiple column transfers. The enclosure of the building is a highly innovative and efficient climate wall double-layered glass curtain wall.
Location: Milan, Italy
Owner: Regione Lombardia
Architect: Pei Cobb Freed & Partners
Area: 98,000 m²
Completion Date: 2011