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美国是一个木材资源比较丰富的国家。邻国加拿大也有丰富的森林资源,每年都有大量的木材就近出口到美国。世界上还有很多的国家向美国出口木材。包括我们这样木材资源贫乏的国家也向美国出口。这正好为美国的房屋建设提供了大批廉价且最能抗震的优质建筑木材。所以,美国几乎所有的民房甚至包括三四层的公寓或公共建筑基本上都是木结构的。美国木结构的房子的墙壁都是夹层构造,中间还用木料进行三角形分割。木料和地面、木料和木料之间用地脚螺丝、
The United States is a country rich in wood resources. Neighboring Canada also has a wealth of forest resources, and every year plenty of timber is exported to the United States. There are still many countries in the world that export timber to the United States. Countries like ours that we have scarce timber resources also export to the United States. This is just the case for the United States providing a large number of housing construction cheap and most earthquake-resistant high-quality construction timber. Therefore, almost all of the homes in the United States and even three or four-story apartment buildings or public buildings are basically wooden structures. The walls of American wooden houses are all mezzanine structures, and the triangle is also divided by wood in the middle. Wood and ground, wood and timber with the ground between the screws,