The technology now exists to construct buildings in excess of 80 meters entirely out of wood. With that in mind, it's now possible to construct dense urban are

The technology now exists to construct buildings in excess of 80 meters entirely out of wood. With that in mind, it's now possible to construct dense urban areas without relying on carbon-emitting concrete or steel going into the structure. Only wood, which is a carbon sink and can be sourced sustainably. Given that this is fairly well-known - and that the impact of concrete on the environment well-studied - what is it that leads you to think that the numbers have not in fact been run?