The Bullitt Center, arguably the “greenest office building in the world” was the first mass timber commercial building constructed in Seattle in over 80 years. It has a structural frame of glulam columns and beams, floor decks of 2×6” lumber set on edge and “nail-laminated” together, and plywood used for structural diaphragm and shear wall panels – all conforming to prescriptive code requirements. 100% of the wood used in the project was FSC certified from local sources to meet the rigorous standards of the “Living Building Challenge.”