See Clough Construction at work in this timelapse of a round deck construction with at least three types of curves. Tapered 2x6's form the radial path going through the deck. Curved 2x6's cut from 2x12's make up the bench and step. Finally, laminates made up of three 1/2"x7 1/2" boards were glued and clamped to forms to create the arbor and deck fascia