The final building design included 15,000 square feet of honed Ambra Travertine and water jetted Verde Fontain Granite. The stone added to the buildings modern curtain wall design and helped to achieve the contemporary look. The sustainable methods of construction and building operation were not lost in the design effort and the result was the first project in the United States to receive LEED ND silver certification.
The final stone design would utilize the lighter travertine material primarily with a much darker green granite used to define certain areas of the building. The travertine facades height of eighteen stories gives the appearance of a line separating the towers. The travertine was also used for paving, cubic benches, cubic signage, treads and risers. A block end of travertine that had been weathered for more than 50 years was hung on the concrete shear wall in the first floor lobby as art.
U.S. Green Building Council LEED™ ND Silver
Travertine and Granite
Ankrom Mosian Associated Architects – Portland, OR
Metal Stud Framing and Concrete
Howard S. Wright – Portland, OR