not really because the load bearing parts don't tend to burn (the same way a log doesn't because the charcoal layer eventually stops the fire). That ironically

not really because the load bearing parts don't tend to burn (the same way a log doesn't because the charcoal layer eventually stops the fire). That ironically even may make them somewhat safer than concrete which tends to crack. The largest currently existing timber high rise as far as I know stands in Norway and is about 81 meters tall.