Advantages of prefabricated constructions 

1. The efficient production of prefabricated house elements produce a fast production and provides people living space in a short time.

2. In arabic countries it is very hot in summer months. The workers can build the wall elements in an air-conditioned factory, working in two till three shifts.

3. In these countries, water is in short supply, therefore,the dry construction is environmentally friendly, since water is saved. The conventional construction, you need cement, for what a lot of water is needed.

4. Prefab timber technology is earthquake saver

https://youtu.be/hSwjkG3nv1c

This video shows an earthquake test of a prefab building