Unobstructed Vision Area

The Unobstructed Vision Area (UVA) is a useful way of assessing how much view each window in the design gets. Here is an otl to calculate the UVA. This gives UVA as a percentage - 100% means that you have a 100% view, while 0% means you have no view at all (i.e. there is a wall directly in front of your window).

• http://files.patrick.janssen.name/2010/uva.zip

See Professor Edward Ng's paper on the use of UVA in Hong Kong.

• http://www.vickycheng.com/Research/Daylight%20for%20High%20Density%20Cities.pdf