The use of Google Sketchup or now Trimble Sketchup greatly accelerate the design process of any 3D objects including houses and buildings with high accuracy. Wood as construction materials is getting scarce but it is still more friendly to the environment than light steel or aluminum. Wood is a sustainable resource whereas steel and aluminum are not. We need more energy to extract these minerals from underground. Architects must design the structures of their wooden houses efficiently to save cost and wood materials. by Charles Roring
Check the following books to learn more about wooden house designs.