Here, you’ll need to make use of many angled beams, footings and posts to support the joints that will move across the round or curved sections of the arc. On this project, we ran the joists through the beam so as to easily cut them back.
The next step was laying out and marking the radius where we used a compass stick. Fix the compass through the front joists and mark the cut radius. After cutting the joists to their required lengths, we prepared the front rim to cover the different joists ends against the section of the deck that we had already curved.