Ben Kaiser, principal among our friends at Path Architecture, is a developer and architect with an interest in wooden skyscrapers. “To make an impact around environmentally conscious construction,” he says, “you have to start with the big idea.” His Carbon12 project in Portland, a 10-storey condo tower, has a framing component made up of cross-laminated timber (CLT). Originating as an architectural building material in Europe, CLT is made up of many layers of adhered lumber boards stacked at 90° angles; here it is forms the floors and structural components of the 85′ building. The project would not have been possible until recently as local building codes capped off timber-framed structures at 65′. In 2015 the American Wood Council introduces new standards for mass timber framing which were adopted that year by the International Building Code.