How to solve the scissors evil in houses and buildings?

As important as shear walls are buildings, surprisingly, they are still ignored in the design process of most houses. In addition, it is always frustrating that few people (sometimes even architects) understand the mechanism behind shear walls. For the workload of shear walls, they get little time under the spotlight of design dialogue. In fact, they are usually only mentioned as a by-product of whether the window can be positioned. We can't help but think that this is an insult to the shear wall, because they have their own Wikipedia entries, all of them. Therefore, in order to maintain the good aspects of our structural causality and lateral design, today's position pays tribute to shear walls and explains why they are so important.

A well-designed shear wall solves the lateral (wind and earthquake) forces of the house and directs them to the foundation, where they are resisted by concrete and the ground. The magnitude of these natural forces depends on the region, the distance from the earthquake zone, the degree of exposure to the wind and so on. Most people don't realize that even in earthquake areas, wind can often control the design of shear walls more than earthquake forces. In strong winds, the walls of houses are often like a big sail, and some things need to keep these sails. Unfortunately, some things are not big windows.

The following figure shows a simple roof/floor and wall relationship. When wind or earthquake force acts on the house, the floor and roof will move laterally. In order to keep these roofs and walls in place, they need to be firmly connected with the shear wall below.