Time-Lapse of a Pi Day Domino Spiral Falling Down

Can you spot the 2 hidden references to 3.14?

FlippyCat made a time-lapse video of a giant domino spiral falling down as a way to celebrate Pi Day in 2011.

…using a formula with Pi, I estimated the total dominos in this spiral to be 10178.75 dominos. I counted the dominos and the estimate was close. 10,059 dominos were actually used.

Additional footage: