What method of day lighting analysis should be followed if a project has 3 typical towers? Specifically, if there is a notable difference between the day lit area of all three towers.

Query

What method of day lighting analysis should be followed if a project has 3 typical towers? Specifically, if there is a notable difference between the day lit area of all three towers.    

Solution

In such a scenario, the daylight analysis should be conducted for the bottom, top and middle floor of each of the typical tower and then the results should be extrapolated. The selection of tower should be such that it is the worst case among all the towers of the same typology.
The points will be awarded based on total regularly occupied area of the project achieving recommended daylight factor as per NBC.