The Centre for Interactive Research on Sustainability, at the University of British Columbia, showing off some timber. CIRS
Slabs of wood this large can match or exceed the performance of concrete and steel. CLT can be used to make floors, walls, ceilings — entire buildings. The world’s tallest mass timber structure, at 18 stories and over 280 feet, was recently built in Norway; there’s an 80-story wooden tower proposed for Chicago.