I wish to re-iterate that I find it odd that the design team provided some sort of shading treatment for three sides of the building and not the north side, which gets blasted every afternoon for 3+ months at the hottest time of the day and year.
I'm certain the architects did a solar study (as mentioned)...it just seems odd.
For those of you unfamiliar, here's the sunpath diagram for Phoenix...basically how any architect figures out how deep to make effective shading structures...