British Columbia is no stranger to wooden giants. …Now a growing chorus of architects, foresters and engineers want the province’s biggest city to grow another cluster of wooden giants: timber skyscrapers. Already, Vancouver’s 18-storey Brock Commons tower stands as a testament to the vast possibilities of wood. …Now the provincial government has changed its building codes, effectively doubling the height limit for wood-frame buildings to 12 storeys. The Canadian government is expected to match BC’s codes nationwide. Vancouver is now pushing even those limits by unveiling plans for the Canada Earth Tower, an ambitious 40-storey tower that would be the world’s tallest wooden building. …Meanwhile, government figures show nearly 500 mid-rise timber buildings in various stages of completion across the country. …“BC’s actions have created a ripple effect around the world,” said Michael Green. “The United States has changed its code effectively because of Canada.