And a century later, engineers developed cross-laminated timber, or CLT.

一个世纪后，工程师开发了交叉层压木材，或称 CLT。

Once constructed, CLT and glulam buildings are also more resilient to some natural disasters.

一旦建成，使用 CLT 和胶合板的建筑对一些自然灾害的抵御能力也会更强。

At one-fifth the weight of concrete, building with CLT requires smaller cranes, smaller foundations, and fewer construction workers.

CLT 的重量只有混凝土的五分之一，使用 CLT 的建筑需要用的起重机和地基比较小，需要用的建筑工人比较少。

But perhaps the biggest benefits of CLT and glulam are outside the construction site.

但 CLT 和胶合板最大的好处也许在建筑工地之外。

Despite these advantages, CLT requires vastly more lumber than traditional wooden construction.

尽管有这些优势，CLT 比传统的木制建筑需要更多的木材。

Increasingly, carbon-negative materials such as Cross Laminated Timber (CLT) or glue laminated timber, commonly known as glulam, are being used.

越来越多的碳负材料，如交叉层压木材或胶层压木材，俗称胶合板，正在被使用。

And when compared in similar quantities, neither CLT or glulam is as strong as steel or concrete.

而在类似数量的比较中，CLT 或胶合木都没有钢筋或混凝土那么坚固。

Glulam isn't as versatile as CLT, but its incredible strength along one direction makes it superior for load-bearing beams and columns.

胶合板不像 CLT 那样用途广泛，但沿着同一个方向时，却具有令人难以置信的强度，使它在承重梁和柱子方面更有优势。

This is the largest public  building with the construction of load-bearing structural  components made from CLT and glulam.

这是最大的公共建筑，其承重结构部件由 CLT 和胶合木制成。

As temperatures rise in a CLT building, the material's outer layer will char, insulating the inner layers for up to three hours.

在 CLT 建筑中，随着温度的升高，这种材料的外层会烧焦，从而产生对内层的隔热，长达三个小时之久。