INNOVATION & DESIGN PROCESS (ID) PART #5

Section 1.5 Building Orientation. We talked about building orientation back on December 16, 2009 when we were considering the lot purchase. In order to obtain this point, the lot selection is critical so that the east-west axis of the building can be placed on the lot such that the home is within 15 degrees of due east-west. Assuming the lot will accommodate the east-west axis, the home also needs:

- Window glass area on the north and south facing walls of the home is at least 50% greater than east and west walls.
- 450 square feet of south-facing roof area oriented appropriately for solar applications.
- 90% of the glass on the south-facing wall is completely shaded by shading, overhangs, etc at high noon on the on the summer solstice.

This point is one of those points that you can be achieved for nearly zero cost by just paying attention to the details. The impact to the energy savings and comfort is significant. Having a home that will have great southern exposure letting sunlight in all winter long will not only provide passive heating, but will just plain make you feel better.

Next week we talk about the durability management process.