Fasten the joists to the angles with deck screws. Screw on both rim joists—you’ll have to take the second rim joist back off when the joists are trimmed and then reattach it, but it’s needed to hold ...

Some of the joists on this project were bowed more than 1 in. Cut the 10-ft. 4x4 posts in half, then plumb and clamp them in place. Drill a 1-in. countersink hole 1/2 in. deep, then drill a 3/8-in.