The sawn timber is straight at that time, but it always bends over time. We call it the nature of wood. When choosing a tree, look at the nature of this tree and use it in the right place. To use a male tree, use with the wood grain curve facing up so that it can withstand the load above. It is a key point of selecting wood necessary for all horizontal materials such as girders and beams. On the other hand, to use it for female trees means to make good use of the distorted direction. Rafters are used on the female wood to prevent the eaves timbers from sagging.
We are creating online learning materials where you can learn about Japanese carpentry in English through the actual construction of the building!
It will be on sale at the kickstarter price from November 14th to December 6th, 2021, so be sure to check it out!