The deck was installed in July, 2013
Diagonal on the deck and landing, straight on the stairs.
It was done by a professional master carpenter that subcontracted to a landscape company.
He viewed "google maps" to see the orientation of the house and lot, and then he positioned the diagonal layout to look down the green belt.
I was pretty pleased with the extra thought and effort.
The landscapers built a wind-break wall for the grill and I installed a under-deck covering the next year. It really helps during rainy and stormy days